Organic-inorganic halides perovskites(OHPs)have drawn the attention of many researchers owing to their astonishing and unique optoelectronic properties.They have been extensively used for photovoltaic applications,ach...Organic-inorganic halides perovskites(OHPs)have drawn the attention of many researchers owing to their astonishing and unique optoelectronic properties.They have been extensively used for photovoltaic applications,achieving higher than 26%power conversion efficiency to date.These materials have potential to be deployed for many other applications beyond photovoltaics like photodetectors,sensors,light-emitting diodes(LEDs),and resistors.To address the looming challenge of Moore’s law and the Von Neumann bottleneck,many new technologies regarding the computation of architectures and storage of information are being extensively researched.Since the discovery of the memristor as a fourth component of the circuit,many materials are explored for memristive applications.Lately,researchers have advanced the exploration of OHPs for memristive applications.These materials possess promising memristive properties and various kinds of halide perovskites have been used for different applications that are not only limited to data storage but expand towards artificial synapses,and neuromorphic computing.Herein we summarize the recent advancements of OHPs for memristive applications,their unique electronic properties,fabrication of materials,and current progress in this field with some future perspectives and outlooks.展开更多
Molecular interactions are crucial in diverse fields of protein folding,material science,nanotechnology,and life origins.Although mounting experimental research controls luminescent behavior by adjusting molecular int...Molecular interactions are crucial in diverse fields of protein folding,material science,nanotechnology,and life origins.Although mounting experimental research controls luminescent behavior by adjusting molecular interactions in light-emitting materials,it remains elusive to correlate microscopic molecular interactions with macroscopic luminescent behavior directly.Here,we synthesized three red luminogens with subtle structural variation and investigated the influence of molecular interactions on their luminescent behavior in solution and aggregate states.Our results indicate that strongπ-πand D-A interactions in both dilute solution(between luminogen and solvent molecules)and aggregate(between luminogens)states cause the redshift in emission,while weak interactions(e.g.,Van der Waals,C–H…π,and C–H…F interactions)enhance the quantum yield.This work provides a thoughtful investigation into the complicated influence of various molecular interactions on luminescent behavior.展开更多
This review focuses on the history and current state of the art optoelectronic applications of quantum dots involving light emission.We focus mainly on three areas of commercial,or potential commercial interest,includ...This review focuses on the history and current state of the art optoelectronic applications of quantum dots involving light emission.We focus mainly on three areas of commercial,or potential commercial interest,including quantum dot light emitting devices(QLEDs,sometimes called QD-LEDs),lasing applications,and quantum computing applications.The main connection between these areas is the development of the science and engineering needed to achieve electrical excitation of the quantum dot in an optoelectronic device in order to achieve emission with characteristics particularly suited to the application in question.Due to the special physics of quantum dots,these materials are particularly well suited for both existing commercial applications,and potentially for future applications,such as single photon sources,spin cubits,or polarized emission.We conclude with an analysis of the future prospects for these exciting materials.Given 30 years of progress since the Nobel Prize winning work on monodisperse samples of QDs,our goal is to highlight the current start of the art,discuss the current issues for each technology,and suggest future goals for the next 30 years for quantum dot research.展开更多
文摘Organic-inorganic halides perovskites(OHPs)have drawn the attention of many researchers owing to their astonishing and unique optoelectronic properties.They have been extensively used for photovoltaic applications,achieving higher than 26%power conversion efficiency to date.These materials have potential to be deployed for many other applications beyond photovoltaics like photodetectors,sensors,light-emitting diodes(LEDs),and resistors.To address the looming challenge of Moore’s law and the Von Neumann bottleneck,many new technologies regarding the computation of architectures and storage of information are being extensively researched.Since the discovery of the memristor as a fourth component of the circuit,many materials are explored for memristive applications.Lately,researchers have advanced the exploration of OHPs for memristive applications.These materials possess promising memristive properties and various kinds of halide perovskites have been used for different applications that are not only limited to data storage but expand towards artificial synapses,and neuromorphic computing.Herein we summarize the recent advancements of OHPs for memristive applications,their unique electronic properties,fabrication of materials,and current progress in this field with some future perspectives and outlooks.
基金supported by the National Natural Science Foundation of China(21788102,52003228)the Innovation and Technology Commission(ITC-CNERC14SC01)+1 种基金the Research Grants Council of Hong Kong(16307020,C6009-17G,C6014-20W,and N-HKUST609/19)the Natural Science Foundation of Guangdong Province(2019B121205012)。
文摘Molecular interactions are crucial in diverse fields of protein folding,material science,nanotechnology,and life origins.Although mounting experimental research controls luminescent behavior by adjusting molecular interactions in light-emitting materials,it remains elusive to correlate microscopic molecular interactions with macroscopic luminescent behavior directly.Here,we synthesized three red luminogens with subtle structural variation and investigated the influence of molecular interactions on their luminescent behavior in solution and aggregate states.Our results indicate that strongπ-πand D-A interactions in both dilute solution(between luminogen and solvent molecules)and aggregate(between luminogens)states cause the redshift in emission,while weak interactions(e.g.,Van der Waals,C–H…π,and C–H…F interactions)enhance the quantum yield.This work provides a thoughtful investigation into the complicated influence of various molecular interactions on luminescent behavior.
文摘This review focuses on the history and current state of the art optoelectronic applications of quantum dots involving light emission.We focus mainly on three areas of commercial,or potential commercial interest,including quantum dot light emitting devices(QLEDs,sometimes called QD-LEDs),lasing applications,and quantum computing applications.The main connection between these areas is the development of the science and engineering needed to achieve electrical excitation of the quantum dot in an optoelectronic device in order to achieve emission with characteristics particularly suited to the application in question.Due to the special physics of quantum dots,these materials are particularly well suited for both existing commercial applications,and potentially for future applications,such as single photon sources,spin cubits,or polarized emission.We conclude with an analysis of the future prospects for these exciting materials.Given 30 years of progress since the Nobel Prize winning work on monodisperse samples of QDs,our goal is to highlight the current start of the art,discuss the current issues for each technology,and suggest future goals for the next 30 years for quantum dot research.
