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
The article shows that the foundation of the digital economy can be a new paradigm for predicting the future from the future,i.e.from the future in which the development goal has already been achieved.This allows to m...The article shows that the foundation of the digital economy can be a new paradigm for predicting the future from the future,i.e.from the future in which the development goal has already been achieved.This allows to minimize all costs and completely avoid incorrect system solutions of the existing trial-and-error approach.Using the achievements of the technological revolution of Industry 4.0,an effective digital economy can be formed only when it is seen as an economy of coordinated interests between the state,business,society and the interests of each individual in real time at every local level.This will make it possible to solve the problem of ensuring the high quality of life not of citizens in general,but of each individual.展开更多
针对谐振接地配电网单相接地故障时定位困难的问题,着眼柔性开关设备(soft open point,SOP)投入改造交流配网的发展趋势,提出一种基于SOP附加三相对称低频电压的主动式故障区段定位新方法。该方法利用消弧线圈对低频外加信号的过补偿作...针对谐振接地配电网单相接地故障时定位困难的问题,着眼柔性开关设备(soft open point,SOP)投入改造交流配网的发展趋势,提出一种基于SOP附加三相对称低频电压的主动式故障区段定位新方法。该方法利用消弧线圈对低频外加信号的过补偿作用,凸显了故障点与消弧线圈安装处的电感电流流通回路。根据低频网络中电感电流与电容电流的固有幅值比,形成自适应判据实现故障区段的有效判定。所提方法原理简单,不受过渡电阻、系统运行方式以及线路长度影响,可靠性较高。PSCAD仿真结果表明该方法的正确性和可行性。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.
基金RFBR according to the research project(No:19-010-00809)。
文摘The article shows that the foundation of the digital economy can be a new paradigm for predicting the future from the future,i.e.from the future in which the development goal has already been achieved.This allows to minimize all costs and completely avoid incorrect system solutions of the existing trial-and-error approach.Using the achievements of the technological revolution of Industry 4.0,an effective digital economy can be formed only when it is seen as an economy of coordinated interests between the state,business,society and the interests of each individual in real time at every local level.This will make it possible to solve the problem of ensuring the high quality of life not of citizens in general,but of each individual.
文摘针对谐振接地配电网单相接地故障时定位困难的问题,着眼柔性开关设备(soft open point,SOP)投入改造交流配网的发展趋势,提出一种基于SOP附加三相对称低频电压的主动式故障区段定位新方法。该方法利用消弧线圈对低频外加信号的过补偿作用,凸显了故障点与消弧线圈安装处的电感电流流通回路。根据低频网络中电感电流与电容电流的固有幅值比,形成自适应判据实现故障区段的有效判定。所提方法原理简单,不受过渡电阻、系统运行方式以及线路长度影响,可靠性较高。PSCAD仿真结果表明该方法的正确性和可行性。
