典型文献
Low-voltage-modulated perovskite/organic dual-band photodetectors for visible and near-infrared imaging
文献摘要：
Visible and near-infrared(NIR)light dual-band photodetectors(PDs)have potential applications in signal detection,bioimaging,optical communications and safety monitoring.Herein,we report an ultrafast per-ovskite/organic heterojunction dual-mode PD with a voltage-modulated photoresponse range in visible and NIR spectra.The PD,comprising a perovskite layer to absorb visible light(500-810 nm)and an organic bulk heterojunction layer for NIR light absorption(810-950 nm),exhibited a switchable spectral response in the visible or NIR bands.The voltage-modulated visible and NIR photoresponses of the PD were attributable to controlled charge photogeneration in perovskite and organic blend thin films under different bias polarities.The device exhibited peak responsivities of 93.5 and 102.2 mA/W in the visible and NIR bands,respectively;a high detectivity of 4.3×109 Jones(at forward bias of 0.7 V and incident 625 nm light)and 1.6×1012 Jones(at reverse bias of-1.5 V and incident 900 nm light);a fast microsec-ond response time;and a wide dynamic range(＞120 dB)both in the visible mode and NIR mode.Also,this voltage-modulated dual-band PD shows promising applications in visible light and NIR imaging,which is proven by demonstrating a PD array with 25 pixels(5×5).
文献关键词：
中图分类号：
作者姓名：
Yu Gao;Cong Zhao;Kai Pu;Miao He;Wanqing Cai;Man-Chung Tang;Feiyu Kang;Hin-Lap Yip;Guodan Wei
作者机构：
Tsinghua-Berkeley Shenzhen Institute,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518000,China;Institute of Materials Research,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518000,China;State Key Laboratory of Luminescent Materials and Devices,Institute of Polymer Optoelectronic School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China;Department of Materials Science and Engineering,City University of Hong Kong,Hong Kong,China;School of Energy and Environment,City University of Hong Kong,Hong Kong,China
文献出处：
引用格式：
[1]Yu Gao;Cong Zhao;Kai Pu;Miao He;Wanqing Cai;Man-Chung Tang;Feiyu Kang;Hin-Lap Yip;Guodan Wei-.Low-voltage-modulated perovskite/organic dual-band photodetectors for visible and near-infrared imaging)[J].科学通报（英文版）,2022(19):1982-1990
A类：
photoresponses,photogeneration,responsivities,microsec
B类：
Low,voltage,modulated,perovskite,organic,dual,photodetectors,visible,near,infrared,Visible,NIR,light,PDs,have,potential,applications,signal,detection,bioimaging,optical,communications,safety,monitoring,Herein,report,ultrafast,heterojunction,mode,range,comprising,layer,absorb,bulk,absorption,exhibited,switchable,spectral,bands,were,attributable,controlled,charge,blend,thin,films,under,different,bias,polarities,device,peak,mA,respectively,high,detectivity,Jones,forward,incident,reverse,ond,wide,dynamic,dB,both,Also,this,shows,promising,which,proven,by,demonstrating,array,pixels
AB值：
0.447696
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