Doping in thin-film transistors(TFTs) plays a crucial role in tailoring material properties to enhance device performance, making them essential for advanced electronic applications. This study explores the synthesis ...Doping in thin-film transistors(TFTs) plays a crucial role in tailoring material properties to enhance device performance, making them essential for advanced electronic applications. This study explores the synthesis and characterization of TFTs fabricated using nickel(Ni)-doped indium oxide(In_(2)O_(3)) via a wet-chemical approach. The presented work investigates the effect of "Ni" incorporation in In_(2)O_(3) on the structural and electrical transport properties of In_(2)O_(3), revealing that higher "Ni" content decreases the oxygen vacancies, leading to a reduction in leakage current and a forward shift in threshold potential(V_(th)).Experimental findings reveal that Ni In O-based TFTs(with Ni = 0.5%) showcase enhanced electrical performance, achieving mobility of 7.54 cm^(2)/(V·s), an impressive ON/OFF current ratio of ~10^(7), a V_(th) of 6.26 V, reduced interfacial trap states(D_(it)) of 8.23 ×10^(12) cm^(-2) and enhanced biased stress stability. The efficacy of "Ni" incorporation is attributed to the upgraded Lewis acidity, stable Ni-O bond strength, and small ionic radius of Ni. Negative bias illumination stability(NBIS) measurements further indicate that device stability diminishes with shorter light wavelengths, likely due to the activation of oxygen vacancies. These findings validate the solution-processed techniques' potential for future large-scale, low-cost, energy-efficient, and high-performance electronics.展开更多
Even in small concentrations,toxic metals like lead,cadmium,and mercury are dangerous to the environment and human health.Environmental monitoring depends on precisely identifying these heavy metals,particularly cadmi...Even in small concentrations,toxic metals like lead,cadmium,and mercury are dangerous to the environment and human health.Environmental monitoring depends on precisely identifying these heavy metals,particularly cadmium ions(Cd(Ⅱ)).In this study,we present a novel screen-printed carbon electrode(SPCE)modified with single crystallineα-Fe_(2)O_(3)nano-hexagons that functions as a sensor for detecting Cd(Ⅱ).The performance of the fabricated sensor was thoroughly assessed and compared with unmodified SPCE using the voltammetric method.The crystalline structure of the synthesizedα-Fe_(2)O_(3)nano-hexagons was confirmed through XRD,and surface analysis revealed an average diameter and thickness of 86 nm and 9 nm,respectively.Theα-Fe_(2)O_(3)modified SPCE yields a 7-fold enhanced response(at pH 5.0 vs.Ag/AgCl)to Cd(Ⅱ)than bare SPCE.The modified electrode effectively detects Cd(Ⅱ)with a linear response range of up to 333.0μmol/L and a detection limit of 0.65 nmol/L under ideal circumstances.This newly fabricated sensor offers significant potential for environmental monitoring applications by providing outstanding practicality,anti-interference ability,and repeatability for detecting Cd(Ⅱ)in water samples.展开更多
采用简单的一步溶剂热法合成了In_(2)O_(3)立方体,并利用X-射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(Scanning electron microscopy,SEM)、透射电子显微镜(Transmission electron microscopy,TEM)、X射线光电子能谱(X-ray phot...采用简单的一步溶剂热法合成了In_(2)O_(3)立方体,并利用X-射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(Scanning electron microscopy,SEM)、透射电子显微镜(Transmission electron microscopy,TEM)、X射线光电子能谱(X-ray photoelectron spectra,XPS)和N2吸附-脱附技术对该In_(2)O_(3)立方体的结构及形貌进行了表征。制备的In_(2)O_(3)立方体尺寸范围在1~5μm。将In_(2)O_(3)立方体制成传感器,测试其对甲苯、丙酮、氯苯、苯、乙醇、二甲苯、甲醇、异丙醇和二氧化氮(NO_(2))气体的气敏性能。结果表明,在最佳工作温度92℃时,In_(2)O_(3)传感器对NO_(2)有良好的气体选择性及灵敏度,对10×10^(-6) NO_(2)气体的响应值为187.7,最低检出限为0.6×10^(-6)。基于In_(2)O_(3)立方体的传感器具有良好的稳定性、重现性和抗湿性,有望实现在实际的复杂环境中对痕量NO_(2)气体的低温检测。展开更多
As one of the most important industrially viable methods for carbon dioxide(CO_(2))utilization,methanol synthesis serves as a platform for production of green fuels and commodity chemicals.For sustainable methanol syn...As one of the most important industrially viable methods for carbon dioxide(CO_(2))utilization,methanol synthesis serves as a platform for production of green fuels and commodity chemicals.For sustainable methanol synthesis,In_(2)O_(3)is an ideal catalyst and has garnered significant attention.Herein,cubic In_(2)O_(3)nanoparticles were prepared via the precipitation method and evaluated for CO_(2)hydrogenation to produce methanol.During the initial 10 h of reaction,CO_(2)conversion gradually increased,accompanied by a slow decrease of methanol selectivity,and the reaction reached equilibrium after 10-20 h on stream.This activation and induction stage may be attributed to the sintering of In_(2)O_(3)nanoparticles and the creation of more oxygen vacancies on In_(2)O_(3)surfaces.Further experimental studies demonstrate that hydrogen induction created additional oxygen vacancies during the catalyst activation stage,enhancing the performance of In_(2)O_(3)catalyst for CO_(2)hydrogenation.Density functional theory calculations and microkinetic simulations further demonstrated that surfaces with higher oxygen vacancy coverages or hydroxylated surfaces formed during this induction period can enhance the reaction rate and increase the CO_(2)conversion.However,they predominantly promote the formation of CO instead of methanol,leading to reduced methanol selectivity.These predictions align well with the above-mentioned experimental observations.Our work thus provides an in-depth analysis of the induction stage of the CO_(2)hydrogenation process on In_(2)O_(3)nano-catalyst,and offers valuable insights for significantly improving the CO_(2)reactivity of In_(2)O_(3)-based catalysts while maintaining long-term stability.展开更多
The rapid recombination of photogenerated carriers poses a significant limitation on the use of CdS quantum dots(QDs)in photocatalysis.Herein,the construction of a novel S-scheme heterojunction between cubic-phase CdS...The rapid recombination of photogenerated carriers poses a significant limitation on the use of CdS quantum dots(QDs)in photocatalysis.Herein,the construction of a novel S-scheme heterojunction between cubic-phase CdS QDs and hollow nanotube In_(2)O_(3)is successfully achieved using an electrostatic self-assembly method.Under visible light irradiation,all CdS-In_(2)O_(3)composites exhibit higher hydrogen evolution efficiency compared to pure CdS QDs.Notably,the photocatalytic H_(2)evolution rate of the optimal CdS-7%In_(2)O_(3)composite is determined to be 2258.59μmol g^(−1)h^(−1),approximately 12.3 times higher than that of pure CdS.The cyclic test indicates that the CdS-In_(2)O_(3)composite maintains considerable activity even after 5 cycles,indicating its excellent stability.In situ X-ray photoelectron spectroscopy and density functional theory calculations confirm that carrier migration in CdS-In_(2)O_(3)composites adheres to a typical S-scheme heterojunction mechanism.Additionally,a series of characterizations demonstrate that the formation of S-scheme heterojunctions between In_(2)O_(3)and CdS inhibits charge recombination and accelerates the separation and migration of photogenerated carriers in the CdS QDs,thus achieving enhanced photocatalytic performance.This work elucidates the pivotal role of S-scheme heterojunctions in photocatalytic H_(2)production and offers novel insights into the construction of effective composite photocatalysts.展开更多
To address the escalating demand for high-mobility transparent and conductive oxide(TCO)films in heterojunction solar cells,multiple components doped In_(2)O_(3) targets were proposed.The In_(2)O_(3) targets incorpora...To address the escalating demand for high-mobility transparent and conductive oxide(TCO)films in heterojunction solar cells,multiple components doped In_(2)O_(3) targets were proposed.The In_(2)O_(3) targets incorporating 1 wt.%CeO_(2),Ta_(2)O_(5),and TiO_(2) were sintered under different sintering temperatures and times.All the targets show the cubic bixbyite phase of In_(2)O_(3).The microstructure illustrates densely packed fine grains and uniform elemental distribution.Notably,increasing the sintering temperature and holding time contributes to effective pore elimination within the targets.A relative density of greater than 99.5%is obtained for the targets sintered at 1500℃ for 4 and 6 h,and the corresponding optimum resistivity decreases from 1.068×10^(-3)to 9.73×10^(-4)Ω·cm.These results provide the experimental basis of fabricating In_(2)O_(3)-based targets for depositing high mobility TCO films by magnetron sputtering.展开更多
In_(2)O_(3) is well known for its ability to activate CO_(2),forming methanol.Indium oxide(In_(2)O_(3)) catalysts are often complemented by Pd to enhance hydrogen activation and spillover during CO_(2) activation.In r...In_(2)O_(3) is well known for its ability to activate CO_(2),forming methanol.Indium oxide(In_(2)O_(3)) catalysts are often complemented by Pd to enhance hydrogen activation and spillover during CO_(2) activation.In reducing conditions,there is also a tendency for In_(2)O_(3) to be reduced and form InPd alloys.Since the InPd/In_(2)O_(3)interface plays a critical role in CO_(2) hydrogenation,the formation of InPd alloys in In-Pd bimetallic catalysts should be carefully controlled to optimize catalytic performance towards forming methanol.This work reports a method exploiting the Br??nsted acidity of ZSM-5 zeolites,which acts as a support to modulate the extent of formation of InPd alloys,thereby fine-tuning the formation of InPd/In_(2)O_(3) interfaces and the resulting CO_(2) hydrogenation performance.Characterization of Pd-In/ZSM-5 catalysts revealed that a low Si/Al ratio promotes the reduction of In_(2)O_(3) and the formation of InPd alloy.At a Si/Al ratio of 35(i.e., Pd-In/ZSM-5-35),the molar ratio of metallic In to In_(2)O_(3) was approximately 9:1,while in the absence of any acidic site,the ratio approached 1:1.At 4.0 MPa and 300℃,Pd-In/Silicate-1 affords 8.2% CO_(2) conversion and over 80% methanol selectivity,with a methanol yield tripling that of Pd-In/ZSM-5-35.The results highlight that the synergistic interface of In-Pd alloys and In_(2)O_(3) is crucial for methanol synthesis from CO_(2) hydrogenation.展开更多
In sulfide-based all-solid-state lithium batteries(ASLBs),the development of high-capacity anode materials with stable interfaces to sulfide solid-state electrolytes(SSEs)is critical.Here,In_(2)O_(3)is explored as an ...In sulfide-based all-solid-state lithium batteries(ASLBs),the development of high-capacity anode materials with stable interfaces to sulfide solid-state electrolytes(SSEs)is critical.Here,In_(2)O_(3)is explored as an anode material for ASLBs for the first time,demonstrating exceptional interfacial stability and electrochemical performance.The In_(2)O_(3)anode,with a substantial mass loading of 7.64 mg cm^(-2),sustains a charge-specific capacity of528.0 mAh g^(-1)(4.03 mAh cm^(-2))at a current density of0.76 mA cm^(-2)over 500 cycles,with a capacity retention of 81.2%.Additionally,it exhibits remarkable long-term cycling stability(2900 cycles)under a high current density of 3.82 mA cm^(-2),with an exceptionally low decay rate of0.016%per cycle.The charge-discharge mechanism of the In_(2)O_(3)anode is elucidated in detail,revealing that the electrochemical evolution of In_(2)O_(3)in ASLBs involves notonly the alloying/dealloying process of indium(In)but also a conversion reaction between In and Li_(2)O.Notably,as cycling progresses,the conversion reaction of In and Li_(2)O diminishes,with the reversible alloy ing/dealloy ing process becoming predominant.This work offers valuable insights for advancing oxide anode materials in sulfide-based ASLBs.展开更多
基金funded by the research startup funding of National Research Foundation (NRF) of Korea through the Ministry of Science and ICT 2022R1G1A1009887Part of this study was supported by research start-up funding of Anhui University (S202418001/078)。
文摘Doping in thin-film transistors(TFTs) plays a crucial role in tailoring material properties to enhance device performance, making them essential for advanced electronic applications. This study explores the synthesis and characterization of TFTs fabricated using nickel(Ni)-doped indium oxide(In_(2)O_(3)) via a wet-chemical approach. The presented work investigates the effect of "Ni" incorporation in In_(2)O_(3) on the structural and electrical transport properties of In_(2)O_(3), revealing that higher "Ni" content decreases the oxygen vacancies, leading to a reduction in leakage current and a forward shift in threshold potential(V_(th)).Experimental findings reveal that Ni In O-based TFTs(with Ni = 0.5%) showcase enhanced electrical performance, achieving mobility of 7.54 cm^(2)/(V·s), an impressive ON/OFF current ratio of ~10^(7), a V_(th) of 6.26 V, reduced interfacial trap states(D_(it)) of 8.23 ×10^(12) cm^(-2) and enhanced biased stress stability. The efficacy of "Ni" incorporation is attributed to the upgraded Lewis acidity, stable Ni-O bond strength, and small ionic radius of Ni. Negative bias illumination stability(NBIS) measurements further indicate that device stability diminishes with shorter light wavelengths, likely due to the activation of oxygen vacancies. These findings validate the solution-processed techniques' potential for future large-scale, low-cost, energy-efficient, and high-performance electronics.
文摘Even in small concentrations,toxic metals like lead,cadmium,and mercury are dangerous to the environment and human health.Environmental monitoring depends on precisely identifying these heavy metals,particularly cadmium ions(Cd(Ⅱ)).In this study,we present a novel screen-printed carbon electrode(SPCE)modified with single crystallineα-Fe_(2)O_(3)nano-hexagons that functions as a sensor for detecting Cd(Ⅱ).The performance of the fabricated sensor was thoroughly assessed and compared with unmodified SPCE using the voltammetric method.The crystalline structure of the synthesizedα-Fe_(2)O_(3)nano-hexagons was confirmed through XRD,and surface analysis revealed an average diameter and thickness of 86 nm and 9 nm,respectively.Theα-Fe_(2)O_(3)modified SPCE yields a 7-fold enhanced response(at pH 5.0 vs.Ag/AgCl)to Cd(Ⅱ)than bare SPCE.The modified electrode effectively detects Cd(Ⅱ)with a linear response range of up to 333.0μmol/L and a detection limit of 0.65 nmol/L under ideal circumstances.This newly fabricated sensor offers significant potential for environmental monitoring applications by providing outstanding practicality,anti-interference ability,and repeatability for detecting Cd(Ⅱ)in water samples.
文摘采用简单的一步溶剂热法合成了In_(2)O_(3)立方体,并利用X-射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(Scanning electron microscopy,SEM)、透射电子显微镜(Transmission electron microscopy,TEM)、X射线光电子能谱(X-ray photoelectron spectra,XPS)和N2吸附-脱附技术对该In_(2)O_(3)立方体的结构及形貌进行了表征。制备的In_(2)O_(3)立方体尺寸范围在1~5μm。将In_(2)O_(3)立方体制成传感器,测试其对甲苯、丙酮、氯苯、苯、乙醇、二甲苯、甲醇、异丙醇和二氧化氮(NO_(2))气体的气敏性能。结果表明,在最佳工作温度92℃时,In_(2)O_(3)传感器对NO_(2)有良好的气体选择性及灵敏度,对10×10^(-6) NO_(2)气体的响应值为187.7,最低检出限为0.6×10^(-6)。基于In_(2)O_(3)立方体的传感器具有良好的稳定性、重现性和抗湿性,有望实现在实际的复杂环境中对痕量NO_(2)气体的低温检测。
文摘As one of the most important industrially viable methods for carbon dioxide(CO_(2))utilization,methanol synthesis serves as a platform for production of green fuels and commodity chemicals.For sustainable methanol synthesis,In_(2)O_(3)is an ideal catalyst and has garnered significant attention.Herein,cubic In_(2)O_(3)nanoparticles were prepared via the precipitation method and evaluated for CO_(2)hydrogenation to produce methanol.During the initial 10 h of reaction,CO_(2)conversion gradually increased,accompanied by a slow decrease of methanol selectivity,and the reaction reached equilibrium after 10-20 h on stream.This activation and induction stage may be attributed to the sintering of In_(2)O_(3)nanoparticles and the creation of more oxygen vacancies on In_(2)O_(3)surfaces.Further experimental studies demonstrate that hydrogen induction created additional oxygen vacancies during the catalyst activation stage,enhancing the performance of In_(2)O_(3)catalyst for CO_(2)hydrogenation.Density functional theory calculations and microkinetic simulations further demonstrated that surfaces with higher oxygen vacancy coverages or hydroxylated surfaces formed during this induction period can enhance the reaction rate and increase the CO_(2)conversion.However,they predominantly promote the formation of CO instead of methanol,leading to reduced methanol selectivity.These predictions align well with the above-mentioned experimental observations.Our work thus provides an in-depth analysis of the induction stage of the CO_(2)hydrogenation process on In_(2)O_(3)nano-catalyst,and offers valuable insights for significantly improving the CO_(2)reactivity of In_(2)O_(3)-based catalysts while maintaining long-term stability.
文摘The rapid recombination of photogenerated carriers poses a significant limitation on the use of CdS quantum dots(QDs)in photocatalysis.Herein,the construction of a novel S-scheme heterojunction between cubic-phase CdS QDs and hollow nanotube In_(2)O_(3)is successfully achieved using an electrostatic self-assembly method.Under visible light irradiation,all CdS-In_(2)O_(3)composites exhibit higher hydrogen evolution efficiency compared to pure CdS QDs.Notably,the photocatalytic H_(2)evolution rate of the optimal CdS-7%In_(2)O_(3)composite is determined to be 2258.59μmol g^(−1)h^(−1),approximately 12.3 times higher than that of pure CdS.The cyclic test indicates that the CdS-In_(2)O_(3)composite maintains considerable activity even after 5 cycles,indicating its excellent stability.In situ X-ray photoelectron spectroscopy and density functional theory calculations confirm that carrier migration in CdS-In_(2)O_(3)composites adheres to a typical S-scheme heterojunction mechanism.Additionally,a series of characterizations demonstrate that the formation of S-scheme heterojunctions between In_(2)O_(3)and CdS inhibits charge recombination and accelerates the separation and migration of photogenerated carriers in the CdS QDs,thus achieving enhanced photocatalytic performance.This work elucidates the pivotal role of S-scheme heterojunctions in photocatalytic H_(2)production and offers novel insights into the construction of effective composite photocatalysts.
基金supported by the Joint Fund of NSFC-Guangxi(U21A2065)Guangxi Natural Science Foundation(2021GXNSFAA220020)+1 种基金the National Natural Science Foundation of China(62364007)Science and Technology Major Project of Guangxi(AA21077018).
文摘To address the escalating demand for high-mobility transparent and conductive oxide(TCO)films in heterojunction solar cells,multiple components doped In_(2)O_(3) targets were proposed.The In_(2)O_(3) targets incorporating 1 wt.%CeO_(2),Ta_(2)O_(5),and TiO_(2) were sintered under different sintering temperatures and times.All the targets show the cubic bixbyite phase of In_(2)O_(3).The microstructure illustrates densely packed fine grains and uniform elemental distribution.Notably,increasing the sintering temperature and holding time contributes to effective pore elimination within the targets.A relative density of greater than 99.5%is obtained for the targets sintered at 1500℃ for 4 and 6 h,and the corresponding optimum resistivity decreases from 1.068×10^(-3)to 9.73×10^(-4)Ω·cm.These results provide the experimental basis of fabricating In_(2)O_(3)-based targets for depositing high mobility TCO films by magnetron sputtering.
基金financially supported by the Singapore LowCarbon Energy Research Funding Initiative hosted under A*STAR for the financial support (Award No. U2102d2006)the Diamond Light Source for the provision of beamtime (proposal number SP34632-3 BAG2024_XAS_027)funding from UKRI EP/N509528/1 (project number 2875474)。
文摘In_(2)O_(3) is well known for its ability to activate CO_(2),forming methanol.Indium oxide(In_(2)O_(3)) catalysts are often complemented by Pd to enhance hydrogen activation and spillover during CO_(2) activation.In reducing conditions,there is also a tendency for In_(2)O_(3) to be reduced and form InPd alloys.Since the InPd/In_(2)O_(3)interface plays a critical role in CO_(2) hydrogenation,the formation of InPd alloys in In-Pd bimetallic catalysts should be carefully controlled to optimize catalytic performance towards forming methanol.This work reports a method exploiting the Br??nsted acidity of ZSM-5 zeolites,which acts as a support to modulate the extent of formation of InPd alloys,thereby fine-tuning the formation of InPd/In_(2)O_(3) interfaces and the resulting CO_(2) hydrogenation performance.Characterization of Pd-In/ZSM-5 catalysts revealed that a low Si/Al ratio promotes the reduction of In_(2)O_(3) and the formation of InPd alloy.At a Si/Al ratio of 35(i.e., Pd-In/ZSM-5-35),the molar ratio of metallic In to In_(2)O_(3) was approximately 9:1,while in the absence of any acidic site,the ratio approached 1:1.At 4.0 MPa and 300℃,Pd-In/Silicate-1 affords 8.2% CO_(2) conversion and over 80% methanol selectivity,with a methanol yield tripling that of Pd-In/ZSM-5-35.The results highlight that the synergistic interface of In-Pd alloys and In_(2)O_(3) is crucial for methanol synthesis from CO_(2) hydrogenation.
基金financially supported by the National Natural Science Foundation of China(No.22301151)the Natural Science Foundation of Inner Mongolia Autonomous Region of China(No.2022QN05024)+1 种基金the Science and Technology Projects of Inner Mongolia Autonomous Region(No.2024SKYPT0011)the Science and Technology Planning Project of Hohhot,China(No.2024-JieBangGuaShuai-Gao-4)
文摘In sulfide-based all-solid-state lithium batteries(ASLBs),the development of high-capacity anode materials with stable interfaces to sulfide solid-state electrolytes(SSEs)is critical.Here,In_(2)O_(3)is explored as an anode material for ASLBs for the first time,demonstrating exceptional interfacial stability and electrochemical performance.The In_(2)O_(3)anode,with a substantial mass loading of 7.64 mg cm^(-2),sustains a charge-specific capacity of528.0 mAh g^(-1)(4.03 mAh cm^(-2))at a current density of0.76 mA cm^(-2)over 500 cycles,with a capacity retention of 81.2%.Additionally,it exhibits remarkable long-term cycling stability(2900 cycles)under a high current density of 3.82 mA cm^(-2),with an exceptionally low decay rate of0.016%per cycle.The charge-discharge mechanism of the In_(2)O_(3)anode is elucidated in detail,revealing that the electrochemical evolution of In_(2)O_(3)in ASLBs involves notonly the alloying/dealloying process of indium(In)but also a conversion reaction between In and Li_(2)O.Notably,as cycling progresses,the conversion reaction of In and Li_(2)O diminishes,with the reversible alloy ing/dealloy ing process becoming predominant.This work offers valuable insights for advancing oxide anode materials in sulfide-based ASLBs.
