Halide perovskite light-emitting electrochemical cells are a novel type of the perovskite optoelectronic devices that differs from the perovskite light-emitting diodes by a simple monolayered architecture.Here,we deve...Halide perovskite light-emitting electrochemical cells are a novel type of the perovskite optoelectronic devices that differs from the perovskite light-emitting diodes by a simple monolayered architecture.Here,we develop a perovskite electrochemical cell both for light emission and detection,where the active layer consists of a composite material made of halide perovskite microcrystals,polymer support matrix,and added mobile ions.The perovskite electrochemical cell of CsPbBr3:PEO:LiTFSI composition,emitting light at the wavelength of 523 nm,yields the luminance more than 7000 cd/m2 and electroluminescence efficiency of 4.3 lm/W.The device fabricated on a silicon substrate with transparent single-walled carbon nanotube film as a top contact exhibits 40%lower Joule heating compared to the perovskite optoelectronic devices fabricated on conventional ITO/glass substrates.Moreover,the device operates as a photodetector with a sensitivity up to 0.75 A/W,specific detectivity of 8.56×1011 Jones,and linear dynamic range of 48 dB.The technological potential of such a device is proven by demonstration of 24-pixel indicator display as well as by successful device miniaturization by creation of electroluminescent images with the smallest features less than 50μm.展开更多
目的:通过正交试验法考察葛根超微粉仿生提取条件。方法:以葛根素和干膏收率的综合指标作为考核指标,通过L9(34)正交试验设计考察葛根超微粉仿生提取条件,确定葛根的最佳仿生提取工艺。结果:仿生提取条件影响因素大小依次是:搅拌次数(C)...目的:通过正交试验法考察葛根超微粉仿生提取条件。方法:以葛根素和干膏收率的综合指标作为考核指标,通过L9(34)正交试验设计考察葛根超微粉仿生提取条件,确定葛根的最佳仿生提取工艺。结果:仿生提取条件影响因素大小依次是:搅拌次数(C)>搅拌转数(D)>搅拌时间(B)>溶媒量(A),即加仿生溶媒6倍量,搅拌两次,每次搅拌15 m in,搅拌转数150 r/m in。结论:筛选出最佳的仿生提取条件。展开更多
基金M.Baeva,A.Vorobyov,V.Neplokh acknowledge the Russian Science Foundation No.22-79-10286(https://rscf.ru/project/22-79-10286/)for supporting silicon substrate processing.D.Gets,APolushkin and S.Makarov acknowledge the Ministry of Science and Higher Education of the Russian Federation(Project 075-15-2021-589)for supporting perovskite synthesisA.G.Nasibulin and D.V.Krasnikov acknowledge the Russian Science Foundation(grant No.20-73-10256)for supporting synthesis of SWCNTs.
文摘Halide perovskite light-emitting electrochemical cells are a novel type of the perovskite optoelectronic devices that differs from the perovskite light-emitting diodes by a simple monolayered architecture.Here,we develop a perovskite electrochemical cell both for light emission and detection,where the active layer consists of a composite material made of halide perovskite microcrystals,polymer support matrix,and added mobile ions.The perovskite electrochemical cell of CsPbBr3:PEO:LiTFSI composition,emitting light at the wavelength of 523 nm,yields the luminance more than 7000 cd/m2 and electroluminescence efficiency of 4.3 lm/W.The device fabricated on a silicon substrate with transparent single-walled carbon nanotube film as a top contact exhibits 40%lower Joule heating compared to the perovskite optoelectronic devices fabricated on conventional ITO/glass substrates.Moreover,the device operates as a photodetector with a sensitivity up to 0.75 A/W,specific detectivity of 8.56×1011 Jones,and linear dynamic range of 48 dB.The technological potential of such a device is proven by demonstration of 24-pixel indicator display as well as by successful device miniaturization by creation of electroluminescent images with the smallest features less than 50μm.
文摘目的:通过正交试验法考察葛根超微粉仿生提取条件。方法:以葛根素和干膏收率的综合指标作为考核指标,通过L9(34)正交试验设计考察葛根超微粉仿生提取条件,确定葛根的最佳仿生提取工艺。结果:仿生提取条件影响因素大小依次是:搅拌次数(C)>搅拌转数(D)>搅拌时间(B)>溶媒量(A),即加仿生溶媒6倍量,搅拌两次,每次搅拌15 m in,搅拌转数150 r/m in。结论:筛选出最佳的仿生提取条件。
