The development of two-dimensional(2D)semiconductors has attracted widespread attentions in the scientific community and industry due to their ultra-thin thickness,unique structure,excellent optoelectronic properties ...The development of two-dimensional(2D)semiconductors has attracted widespread attentions in the scientific community and industry due to their ultra-thin thickness,unique structure,excellent optoelectronic properties and novel physics.The excellent flexibility and outstanding mechanical strength of 2D semiconductors provide opportunities for fabricated strain-sensitive devices and utilized strain tuning their electronic and optic–electric performance.The strain-engineered one-dimensional materials have been well investigated,while there is a long way to go for 2D semiconductors.In this review,starting with the fundamental theories of piezoelectric and piezoresistive effect resulted by strain,following we reviewed the recent simulation works of strain engineering in novel 2D semiconductors,such as Janus 2D and 2D-Xene structures.Moreover,recent advances in experimental observation of strain tuning PL spectra and transport behavior of 2D semiconductors are summarized.Furthermore,the applications of strain-engineered 2D semiconductors in sensors,photodetectors and nanogenerators are also highlighted.At last,we in-depth discussed future research directions of strain-engineered 2D semiconductor and related electronics and optoelectronics device applications.展开更多
Flexible electronics and optoelectronics exhibit inevitable trends in next-generation intelligent industries,including healthcare and wellness,electronic skins,the automotive industry,and foldable or rollable displays...Flexible electronics and optoelectronics exhibit inevitable trends in next-generation intelligent industries,including healthcare and wellness,electronic skins,the automotive industry,and foldable or rollable displays.Traditional bulk-material-based flexible devices considerably rely on lattice-matched crystal structures and are usually plagued by unavoidable chemical disorders at the interface.Two-dimensional van der Waals materials(2D VdWMs)have exceptional multifunctional properties,including large specific area,dangling-bond-free interface,plane-to-plane van der Waals interactions,and excellent mechanical,electrical,and optical properties.Thus,2D VdWMs have considerable application potential in functional intelligent flexible devices.To utilize the unique properties of 2D VdWMs and their van der Waals heterostructures,new designs and configurations of electronics and optoelectronics have emerged.However,these new designs and configurations do not consider lattice mismatch and process incompatibility issues.In this review,we summarized the recently reported 2D VdWM-based flexible electronic and optoelectronic devices with various functions thoroughly.Moreover,we identified the challenges and opportunities for further applications of 2D VdWM-based flexible electronics and optoelectronics.展开更多
In the past decade, metal-halide perovskites have attracted increasing attention in optoelectronics, due to their superior optoelectronic properties.However, inherent instabilities of conventional three-dimensional(3D...In the past decade, metal-halide perovskites have attracted increasing attention in optoelectronics, due to their superior optoelectronic properties.However, inherent instabilities of conventional three-dimensional(3D)perovskites over moisture, heat, and light remain a severe challenge before the realization of commercial application of metal-halide perovskites.Interestingly, when the dimensions of metal-halide perovskites are reduced to two dimensions(2D), many of the novel properties will arise, such as enlarged bandgap, high photoluminescence quantum yield, and large exciton binding energy. As a result, 2D metal-halide perovskite-based optoelectronic devices display excellent performance, particularly as ambient stable solar cells with excellent power conversion efficiency(PCE), high-performance light-emitting diodes(LEDs) with sharp emission peak, and high-sensitive photodetectors. In this review, we first introduce the synthesis, structure,and physical properties of 2D perovskites. Then, the 2D perovskite-based solar cells, LEDs, and photodetectors are discussed. Finally, a brief overview of the opportunities and challenges for 2D perovskite optoelectronics is presented.展开更多
The ever-increasing demand for smart optoelectronics spurs the relentless pursuit of transparent wireless devices as a game-changing technology that can provide unseen visual information behind the electronics.To enab...The ever-increasing demand for smart optoelectronics spurs the relentless pursuit of transparent wireless devices as a game-changing technology that can provide unseen visual information behind the electronics.To enable successful operation of the transparent wireless devices,their power sources should be highly transparent in addition to acquiring reliable electrochemical performance.Among various transparent power sources,supercapacitors(SCs)have been extensively investigated as a promising candidate due to their exceptional cyclability,power capability,material diversity,and scalable/low-cost processability.Herein,we describe current status and challenges of transparent SCs,with a focus on their core materials,performance advancements,and integration with application devices.A special attention is devoted to transparent conductive electrodes(TCEs)which act as a keyenabling component in the transparent SCs.Based on fundamental understanding of optical theories and operating principles of transparent materials,we comprehensively discuss materials chemistry,structural design,and fabrication techniques of TCEs.In addition,noteworthy progresses of transparent SCs are briefly overviewed in terms of their architectural design,opto-electrochemical performance,flexibility,form factors,and integration compatibility with transparent flexible/wearable devices of interest.Finally,development direction and outlook of transparent SCs are explored along with their viable roles in future application fields.展开更多
Silicon nanomaterials have been of immense interest in the last few decades due to their remarkable optoelectronic responses,elemental abundance,and higher biocompatibility.Two-dimensional silicon is one of the new al...Silicon nanomaterials have been of immense interest in the last few decades due to their remarkable optoelectronic responses,elemental abundance,and higher biocompatibility.Two-dimensional silicon is one of the new allotropes of silicon and has many compelling properties such as quantum-confined photoluminescence,high charge carrier mobilities,anisotropic electronic and magnetic response,and non-linear optical properties.This review summarizes the recent advances in the synthesis of two-dimensional silicon nanomaterials with a range of structures(silicene,silicane,and multilayered silicon),surface ligand engineering,and corresponding optoelectronic applications.展开更多
We summarize our work of the optoelectronic devices based on Germanium-tin （GeSn） alloys assisted with the Si3N4liner stressor in mid-infrared （MIR） domains. The device characteristics are thoroughly analyzed by t...We summarize our work of the optoelectronic devices based on Germanium-tin （GeSn） alloys assisted with the Si3N4liner stressor in mid-infrared （MIR） domains. The device characteristics are thoroughly analyzed by the strain distribution,band structure, and absorption characteristics. Numerical and analytical methods show that with optimal structural pa-rameters, the device performance can be further improved and the wavelength application range can be extended to 2~5 μm in the mid-infrared spectra. It is demonstrated that this proposed strategy provides an effective technique for the strained-GeSn devices in future optical designs, which will be competitive for the optoelectronics applications in mid-infrared wavelength.展开更多
International Conference on Nanotechnology, Optoelectronics and Photonics Technologies （NOPT） is an annual International Conference sponsored by Photonics and Microelectronics Society and Components, Packaging ＆ Ma...International Conference on Nanotechnology, Optoelectronics and Photonics Technologies （NOPT） is an annual International Conference sponsored by Photonics and Microelectronics Society and Components, Packaging ＆ Manufacturing Society of IACSIT （International Association of Computer Science and Information Technology）,展开更多
Two-dimensional(2D) layered perovskites have emerged as potential alternates to traditional three-dimensional(3D)analogs to solve the stability issue of perovskite solar cells. In recent years, many efforts have been ...Two-dimensional(2D) layered perovskites have emerged as potential alternates to traditional three-dimensional(3D)analogs to solve the stability issue of perovskite solar cells. In recent years, many efforts have been spent on manipulating the interlayer organic spacing cation to improve the photovoltaic properties of Dion–Jacobson(DJ) perovskites. In this work, a serious of cycloalkane(CA) molecules were selected as the organic spacing cation in 2D DJ perovskites, which can widely manipulate the optoelectronic properties of the DJ perovskites. The underlying relationship between the CA interlayer molecules and the crystal structures, thermodynamic stabilities, and electronic properties of 58 DJ perovskites has been investigated by using automatic high-throughput workflow cooperated with density-functional(DFT) calculations.We found that these CA-based DJ perovskites are all thermodynamic stable. The sizes of the cycloalkane molecules can influence the degree of inorganic framework distortion and further tune the bandgaps with a wide range of 0.9–2.1 eV.These findings indicate the cycloalkane molecules are suitable as spacing cation in 2D DJ perovskites and provide a useful guidance in designing novel 2D DJ perovskites for optoelectronic applications.展开更多
Organic photoconductor, pinacyanol chloride, has been studied with infrared spectroscopy because of its thermal activation energy (Ea) and band gap (Eg = 2Ea) lying in the infrared range. Particularly, pinacyanol chlo...Organic photoconductor, pinacyanol chloride, has been studied with infrared spectroscopy because of its thermal activation energy (Ea) and band gap (Eg = 2Ea) lying in the infrared range. Particularly, pinacyanol chloride and its charge transfer (CT) complexes with chloranil, DDQ, TCNQ and TCNE as organic acceptors are studied in details. The CT complexes are having neither two absorption edges like ternary complex having one donor and two acceptors nor binary type with Lorentzian or Gaussian envelopes. The forbidden gap is direct band gap except chloranil complex due to increase in molecular distance and CT interaction. There is imperfect nesting and partial screening determining the mid-IR envelope, which is qualitatively different from the envelopes in binary systems. There is inverted parabola in some range below this envelope. It is explained how infrared absorption is related with the applications of such organic photoconductors in optoelectronic devices.展开更多
In the progress of realizing the commercialization of organic optoelectronic materials,the four basic coherent factors are stability,cost,performance,and processability,all which determine the results of device applic...In the progress of realizing the commercialization of organic optoelectronic materials,the four basic coherent factors are stability,cost,performance,and processability,all which determine the results of device applications.Spiro[fluorene-9,9′-xanthene](SFX)has been becoming the robust building-block that fulfilling the practical requirements due to its key features of non-planarity,one-pot facile availability,well-defined quality assurance as well as performance behaviors.In this review,we introduce the SFX and its analogues,including synthesis,molecular design,device performance,and structure-property relationship,in the applications of organic light-emitting diodes(OLEDs),organic photovoltaics,perovskite solar cells(PSCs)and others.Furthermore,emitters or hosts for OLED and hole transport materials for PSCs are highlighted at the level of molecular configuration and film morphology.Tracing the thread from intrinsic photoelectric properties,molecular packing to optoelectronic application,the advantage of stability and low-cost of SFX-based materials are illuminated,and an outlook is given providing orientation for bring SFX into the fields of catalysis and energy chemistry in view of its binary conjugation and three-dimensional configuration.展开更多
Luminescent ion‐doped materials have gained extensive attention and application in both scientific research and practical fields.The integration of luminescent ions with nano‐structured semiconductors has emerged as...Luminescent ion‐doped materials have gained extensive attention and application in both scientific research and practical fields.The integration of luminescent ions with nano‐structured semiconductors has emerged as a highly promising development trend to meet the growing demands for advanced functional systems.This review focuses on luminescent ion‐doped nanostructured semiconductors,including 0D,1D,and 2D systems.It elaborates on the pivotal roles that luminescent ions play within these materials.Subsequently,the article offers a comprehensive overview of the application scenarios and effects of various luminescent ions doped into nano‐structured semiconductors.Additionally,the article systematically discusses the coupling mechanisms between luminescent ions and nano‐structured semiconductors,as well as the synergistic effects of codoping.We also present the specific applications of these materials in the information and functional materials fields.Lastly,this work addresses the current challenges faced in this research area and outlines the frontier development directions,providing valuable insights for future exploration.展开更多
Large-area chemically synthesized single-crystal metals with nanometer-scale thickness have emerged as promising materials for on-chip nanophotonic applications,owing to their superior plasmonic properties compared to...Large-area chemically synthesized single-crystal metals with nanometer-scale thickness have emerged as promising materials for on-chip nanophotonic applications,owing to their superior plasmonic properties compared to nanofabricated polycrystalline counterparts.While much recent attention has focused on their optical properties,the combined optimal electrical and optical characteristics,which hold great potential for high-performance optoelectronic functionalities,remain largely unexplored.Here,we present a single-crystal plasmonic optoelectronic platform based on nanowires fabricated from synthesized gold flakes and demonstrate its capabilities for highly enhanced hot carrier collection,electroluminescence,and photovoltage detection.Notably,single-crystal gold nanogap devices exhibit an order of magnitude higher open-circuit photovoltage compared to polycrystalline devices,representing one of the highest reported photovoltage sensing performances in terms of on-chip device density and responsivity per area.Our analysis revealed that this enhancement is attributed mostly to the suppression of electron-phonon scattering and improved hot carrier tunneling efficiency in single-crystal devices.These results highlight the potential of large-scale single-crystal nanostructures for both fundamental studies of nanoscale hot carrier transport and scalable electrically driven nanophotonic applications.展开更多
Erbium-doped/erbium-ytterbium co-doped waveguide amplifiers(EDWAs/EYCDWAs)have received much attention as essential components within large-scale functionalized silicon-based optoelectronic(SBO)chips for their remarka...Erbium-doped/erbium-ytterbium co-doped waveguide amplifiers(EDWAs/EYCDWAs)have received much attention as essential components within large-scale functionalized silicon-based optoelectronic(SBO)chips for their remarkable ability to amplify optical signals on-chip at the communication band combined with their potential application across diverse fields.We reviewed the research progress of EDWAs/EYCDWAs comprehensively.In particular,the research advancements concerning amplifiers constructed with diverse host materials are introduced in detail,and the gain limitations of the waveguide amplifiers are thoroughly analyzed from multiple perspectives,such as host materials and innovative structural designs.Subsequently,the preparation processes of the gain medium and waveguide structure in EDWAs/EYCDWAs are discussed,and their common application scenarios and commercial applications are summarized.In addition,an assessment is carried out on the challenges encountered by EDWAs/EYCDWAs.Finally,a discussion is held on their potential applications and development prospects in the field of SBO chips,with the aspiration of providing valuable references for the development of EDWAs/EYCDWAs.展开更多
Editorial In 2012,Prof.Henry Snaith demonstrated the first solid-state perovskite solar cell(PSC)with an efficiency of 10.9%,igniting a surge of interest and research into perovskite materials for their potential to r...Editorial In 2012,Prof.Henry Snaith demonstrated the first solid-state perovskite solar cell(PSC)with an efficiency of 10.9%,igniting a surge of interest and research into perovskite materials for their potential to revolutionize the photovoltaic(PV)industry.Over the past two decades,perovskite optoelectronics have made remarkable progress,with significant improvements in efficiency,stability,and commercial viability,which has transformed these materials from a scientific curiosity into a leading platform for a wide range of applications,particularly in PVs and light-emitting diodes(LEDs).展开更多
The explosion of interest in two-dimensional van der Waals materials has been in many ways driven by their layered geometry. This feature makes possible numerous avenues for assembling and ma- nipulating the optical a...The explosion of interest in two-dimensional van der Waals materials has been in many ways driven by their layered geometry. This feature makes possible numerous avenues for assembling and ma- nipulating the optical and electronic properties of these materials. In the specific case of monolayer transition metal dichalcogenide semiconductors, the direct band gap combined with the flexibility for manipulation of layers has made this class of materials promising for optoelectronics. Here, we review the properties of these layered materials and the various means of engineering these properties for optoeleetronics. We summarize approaches for control that modify their structural and chemical en- vironment, and we give particular detail on the integration of these materials into engineered optical fields to control their optical characteristics. This combination of controllability from their layered surface structure and photonic environment provide an expansive landscape for novel optoelectronic phenomena.展开更多
基金supported by the National Natural Science Foundation of China(51572025,51627801,61435010 and 51702219)the State Key Research Development Program of China(2019YFB2203503)+3 种基金Guangdong Basic and Applied Basic Research Foundation(2019A1515110209)the Science and Technology Innovation Commission of Shenzhen(JCYJ20170818093453105,JCYJ20180305125345378)National Foundation of China(41422050303)Beijing Municipal Science&Technology Commission and the Fundamental Research Funds for Central Universities.
文摘The development of two-dimensional(2D)semiconductors has attracted widespread attentions in the scientific community and industry due to their ultra-thin thickness,unique structure,excellent optoelectronic properties and novel physics.The excellent flexibility and outstanding mechanical strength of 2D semiconductors provide opportunities for fabricated strain-sensitive devices and utilized strain tuning their electronic and optic–electric performance.The strain-engineered one-dimensional materials have been well investigated,while there is a long way to go for 2D semiconductors.In this review,starting with the fundamental theories of piezoelectric and piezoresistive effect resulted by strain,following we reviewed the recent simulation works of strain engineering in novel 2D semiconductors,such as Janus 2D and 2D-Xene structures.Moreover,recent advances in experimental observation of strain tuning PL spectra and transport behavior of 2D semiconductors are summarized.Furthermore,the applications of strain-engineered 2D semiconductors in sensors,photodetectors and nanogenerators are also highlighted.At last,we in-depth discussed future research directions of strain-engineered 2D semiconductor and related electronics and optoelectronics device applications.
基金supported by the Natural Science Foundation of Beijing Municipality(No.Z180011)the National Natural Science Foundation of China(Nos.51991340,51991342,51972022,92163205,and 52188101)+2 种基金the National Key Research and Development Program of China(No.2016YFA0202701)the Fundamental Research Funds for the Central Universities(No.FRF-TP-19-025A3)the Overseas Expertise Introduction Projects for Discipline Innovation(No.B14003)。
文摘Flexible electronics and optoelectronics exhibit inevitable trends in next-generation intelligent industries,including healthcare and wellness,electronic skins,the automotive industry,and foldable or rollable displays.Traditional bulk-material-based flexible devices considerably rely on lattice-matched crystal structures and are usually plagued by unavoidable chemical disorders at the interface.Two-dimensional van der Waals materials(2D VdWMs)have exceptional multifunctional properties,including large specific area,dangling-bond-free interface,plane-to-plane van der Waals interactions,and excellent mechanical,electrical,and optical properties.Thus,2D VdWMs have considerable application potential in functional intelligent flexible devices.To utilize the unique properties of 2D VdWMs and their van der Waals heterostructures,new designs and configurations of electronics and optoelectronics have emerged.However,these new designs and configurations do not consider lattice mismatch and process incompatibility issues.In this review,we summarized the recently reported 2D VdWM-based flexible electronic and optoelectronic devices with various functions thoroughly.Moreover,we identified the challenges and opportunities for further applications of 2D VdWM-based flexible electronics and optoelectronics.
基金financially supported by the National Key Research and Development Program of China (No. 2016YFB0700702)research start-up funding from Guangxi University of Science and Technology (No. 03190219)
文摘In the past decade, metal-halide perovskites have attracted increasing attention in optoelectronics, due to their superior optoelectronic properties.However, inherent instabilities of conventional three-dimensional(3D)perovskites over moisture, heat, and light remain a severe challenge before the realization of commercial application of metal-halide perovskites.Interestingly, when the dimensions of metal-halide perovskites are reduced to two dimensions(2D), many of the novel properties will arise, such as enlarged bandgap, high photoluminescence quantum yield, and large exciton binding energy. As a result, 2D metal-halide perovskite-based optoelectronic devices display excellent performance, particularly as ambient stable solar cells with excellent power conversion efficiency(PCE), high-performance light-emitting diodes(LEDs) with sharp emission peak, and high-sensitive photodetectors. In this review, we first introduce the synthesis, structure,and physical properties of 2D perovskites. Then, the 2D perovskite-based solar cells, LEDs, and photodetectors are discussed. Finally, a brief overview of the opportunities and challenges for 2D perovskite optoelectronics is presented.
基金supported by the Basic Science Research Program(2018R1A2A1A05019733)Wearable Platform Materials Technology Center(2016R1A5A1009926)through the National Research Foundation of Korea(NRF)grant by the Korean Government(MSIT)Industry Technology Development Program(10080540)funded by the Ministry of Trade,Industry&Energy(MOTIE,Korea)
文摘The ever-increasing demand for smart optoelectronics spurs the relentless pursuit of transparent wireless devices as a game-changing technology that can provide unseen visual information behind the electronics.To enable successful operation of the transparent wireless devices,their power sources should be highly transparent in addition to acquiring reliable electrochemical performance.Among various transparent power sources,supercapacitors(SCs)have been extensively investigated as a promising candidate due to their exceptional cyclability,power capability,material diversity,and scalable/low-cost processability.Herein,we describe current status and challenges of transparent SCs,with a focus on their core materials,performance advancements,and integration with application devices.A special attention is devoted to transparent conductive electrodes(TCEs)which act as a keyenabling component in the transparent SCs.Based on fundamental understanding of optical theories and operating principles of transparent materials,we comprehensively discuss materials chemistry,structural design,and fabrication techniques of TCEs.In addition,noteworthy progresses of transparent SCs are briefly overviewed in terms of their architectural design,opto-electrochemical performance,flexibility,form factors,and integration compatibility with transparent flexible/wearable devices of interest.Finally,development direction and outlook of transparent SCs are explored along with their viable roles in future application fields.
基金the National Natural Science Foundation of China(21905316,22175201)Guangdong Natural Science Foundation(2019A1515011748)+1 种基金the Science and Technology Planning Project of Guangdong Province(2019A050510018)Sun Yat-sen University.
文摘Silicon nanomaterials have been of immense interest in the last few decades due to their remarkable optoelectronic responses,elemental abundance,and higher biocompatibility.Two-dimensional silicon is one of the new allotropes of silicon and has many compelling properties such as quantum-confined photoluminescence,high charge carrier mobilities,anisotropic electronic and magnetic response,and non-linear optical properties.This review summarizes the recent advances in the synthesis of two-dimensional silicon nanomaterials with a range of structures(silicene,silicane,and multilayered silicon),surface ligand engineering,and corresponding optoelectronic applications.
基金The authors thank National Natural Science Foundation of China （Grant No. 61534004, 61604112 and 61622405）.
文摘We summarize our work of the optoelectronic devices based on Germanium-tin （GeSn） alloys assisted with the Si3N4liner stressor in mid-infrared （MIR） domains. The device characteristics are thoroughly analyzed by the strain distribution,band structure, and absorption characteristics. Numerical and analytical methods show that with optimal structural pa-rameters, the device performance can be further improved and the wavelength application range can be extended to 2~5 μm in the mid-infrared spectra. It is demonstrated that this proposed strategy provides an effective technique for the strained-GeSn devices in future optical designs, which will be competitive for the optoelectronics applications in mid-infrared wavelength.
文摘International Conference on Nanotechnology, Optoelectronics and Photonics Technologies （NOPT） is an annual International Conference sponsored by Photonics and Microelectronics Society and Components, Packaging ＆ Manufacturing Society of IACSIT （International Association of Computer Science and Information Technology）,
基金supported by the National Natural Science Foundation of China (Grant No. 62004080)the Postdoctoral Innovative Talents Supporting Program (Grant No. BX20190143)the China Postdoctoral Science Foundation (Grant No. 2020M670834)。
文摘Two-dimensional(2D) layered perovskites have emerged as potential alternates to traditional three-dimensional(3D)analogs to solve the stability issue of perovskite solar cells. In recent years, many efforts have been spent on manipulating the interlayer organic spacing cation to improve the photovoltaic properties of Dion–Jacobson(DJ) perovskites. In this work, a serious of cycloalkane(CA) molecules were selected as the organic spacing cation in 2D DJ perovskites, which can widely manipulate the optoelectronic properties of the DJ perovskites. The underlying relationship between the CA interlayer molecules and the crystal structures, thermodynamic stabilities, and electronic properties of 58 DJ perovskites has been investigated by using automatic high-throughput workflow cooperated with density-functional(DFT) calculations.We found that these CA-based DJ perovskites are all thermodynamic stable. The sizes of the cycloalkane molecules can influence the degree of inorganic framework distortion and further tune the bandgaps with a wide range of 0.9–2.1 eV.These findings indicate the cycloalkane molecules are suitable as spacing cation in 2D DJ perovskites and provide a useful guidance in designing novel 2D DJ perovskites for optoelectronic applications.
文摘Organic photoconductor, pinacyanol chloride, has been studied with infrared spectroscopy because of its thermal activation energy (Ea) and band gap (Eg = 2Ea) lying in the infrared range. Particularly, pinacyanol chloride and its charge transfer (CT) complexes with chloranil, DDQ, TCNQ and TCNE as organic acceptors are studied in details. The CT complexes are having neither two absorption edges like ternary complex having one donor and two acceptors nor binary type with Lorentzian or Gaussian envelopes. The forbidden gap is direct band gap except chloranil complex due to increase in molecular distance and CT interaction. There is imperfect nesting and partial screening determining the mid-IR envelope, which is qualitatively different from the envelopes in binary systems. There is inverted parabola in some range below this envelope. It is explained how infrared absorption is related with the applications of such organic photoconductors in optoelectronic devices.
基金support by the the Sci-ence Research Plan of Shenyang University of Chemical Technol-ogy(XXLJ2019006)the Natural Science Foundation of Liaoning Province(2021-MS-254).
文摘In the progress of realizing the commercialization of organic optoelectronic materials,the four basic coherent factors are stability,cost,performance,and processability,all which determine the results of device applications.Spiro[fluorene-9,9′-xanthene](SFX)has been becoming the robust building-block that fulfilling the practical requirements due to its key features of non-planarity,one-pot facile availability,well-defined quality assurance as well as performance behaviors.In this review,we introduce the SFX and its analogues,including synthesis,molecular design,device performance,and structure-property relationship,in the applications of organic light-emitting diodes(OLEDs),organic photovoltaics,perovskite solar cells(PSCs)and others.Furthermore,emitters or hosts for OLED and hole transport materials for PSCs are highlighted at the level of molecular configuration and film morphology.Tracing the thread from intrinsic photoelectric properties,molecular packing to optoelectronic application,the advantage of stability and low-cost of SFX-based materials are illuminated,and an outlook is given providing orientation for bring SFX into the fields of catalysis and energy chemistry in view of its binary conjugation and three-dimensional configuration.
基金Natural Science Foundation of Zhejiang Province,Grant/Award Number:LR24F050002National Natural Science Foundation of China,Grant/Award Number:62175225National Key Research and Development Program of China,Grant/Award Number:2021YFB3502100。
文摘Luminescent ion‐doped materials have gained extensive attention and application in both scientific research and practical fields.The integration of luminescent ions with nano‐structured semiconductors has emerged as a highly promising development trend to meet the growing demands for advanced functional systems.This review focuses on luminescent ion‐doped nanostructured semiconductors,including 0D,1D,and 2D systems.It elaborates on the pivotal roles that luminescent ions play within these materials.Subsequently,the article offers a comprehensive overview of the application scenarios and effects of various luminescent ions doped into nano‐structured semiconductors.Additionally,the article systematically discusses the coupling mechanisms between luminescent ions and nano‐structured semiconductors,as well as the synergistic effects of codoping.We also present the specific applications of these materials in the information and functional materials fields.Lastly,this work addresses the current challenges faced in this research area and outlines the frontier development directions,providing valuable insights for future exploration.
基金support from Air Force Research Laboratory(AFRL FA8651-22-1-0012)National Science Foundation(NSF CAREER CBET-2239004)+2 种基金D.N.and S.L.acknowledge support from the Office of Naval Research(N00014-21-1-2062)the National Science Foundation(ECCS-2309941)the Robert A.Welch Foundation(C-1636).
文摘Large-area chemically synthesized single-crystal metals with nanometer-scale thickness have emerged as promising materials for on-chip nanophotonic applications,owing to their superior plasmonic properties compared to nanofabricated polycrystalline counterparts.While much recent attention has focused on their optical properties,the combined optimal electrical and optical characteristics,which hold great potential for high-performance optoelectronic functionalities,remain largely unexplored.Here,we present a single-crystal plasmonic optoelectronic platform based on nanowires fabricated from synthesized gold flakes and demonstrate its capabilities for highly enhanced hot carrier collection,electroluminescence,and photovoltage detection.Notably,single-crystal gold nanogap devices exhibit an order of magnitude higher open-circuit photovoltage compared to polycrystalline devices,representing one of the highest reported photovoltage sensing performances in terms of on-chip device density and responsivity per area.Our analysis revealed that this enhancement is attributed mostly to the suppression of electron-phonon scattering and improved hot carrier tunneling efficiency in single-crystal devices.These results highlight the potential of large-scale single-crystal nanostructures for both fundamental studies of nanoscale hot carrier transport and scalable electrically driven nanophotonic applications.
文摘Erbium-doped/erbium-ytterbium co-doped waveguide amplifiers(EDWAs/EYCDWAs)have received much attention as essential components within large-scale functionalized silicon-based optoelectronic(SBO)chips for their remarkable ability to amplify optical signals on-chip at the communication band combined with their potential application across diverse fields.We reviewed the research progress of EDWAs/EYCDWAs comprehensively.In particular,the research advancements concerning amplifiers constructed with diverse host materials are introduced in detail,and the gain limitations of the waveguide amplifiers are thoroughly analyzed from multiple perspectives,such as host materials and innovative structural designs.Subsequently,the preparation processes of the gain medium and waveguide structure in EDWAs/EYCDWAs are discussed,and their common application scenarios and commercial applications are summarized.In addition,an assessment is carried out on the challenges encountered by EDWAs/EYCDWAs.Finally,a discussion is held on their potential applications and development prospects in the field of SBO chips,with the aspiration of providing valuable references for the development of EDWAs/EYCDWAs.
基金the National Key Research and Development Program(Grant 2023YFE0109600)of China.
文摘Editorial In 2012,Prof.Henry Snaith demonstrated the first solid-state perovskite solar cell(PSC)with an efficiency of 10.9%,igniting a surge of interest and research into perovskite materials for their potential to revolutionize the photovoltaic(PV)industry.Over the past two decades,perovskite optoelectronics have made remarkable progress,with significant improvements in efficiency,stability,and commercial viability,which has transformed these materials from a scientific curiosity into a leading platform for a wide range of applications,particularly in PVs and light-emitting diodes(LEDs).
基金The authors acknowledge support by the Office of Naval Research under Grant No. N00014-16-1-3055, the U.S. Department of Energy, Office of Basic Energy Sciences, Divi- sion of Materials Sciences and Engineering under award No. DE- SC0012130, and National Science Foundation MRSEC program under grant No. DMR-1720139 at the Materials Research Center of Northwestern University.
文摘The explosion of interest in two-dimensional van der Waals materials has been in many ways driven by their layered geometry. This feature makes possible numerous avenues for assembling and ma- nipulating the optical and electronic properties of these materials. In the specific case of monolayer transition metal dichalcogenide semiconductors, the direct band gap combined with the flexibility for manipulation of layers has made this class of materials promising for optoelectronics. Here, we review the properties of these layered materials and the various means of engineering these properties for optoeleetronics. We summarize approaches for control that modify their structural and chemical en- vironment, and we give particular detail on the integration of these materials into engineered optical fields to control their optical characteristics. This combination of controllability from their layered surface structure and photonic environment provide an expansive landscape for novel optoelectronic phenomena.
