典型文献
A novel approach for designing efficient broadband photodetectors expanding from deep ultraviolet to near infrared
文献摘要：
Broadband photodetection(PD)covering the deep ultraviolet to near-infrared(200-1000 nm)range is significant and desirable for various optoelectronic designs.Herein,we employ ultraviolet(UV)luminescent concentrators(LC),iodine-based perovskite quantum dots(PQDs),and organic bulk heterojunction(BHJ)as the UV,visible,and near-infrared(NIR)photosensitive layers,respectively,to construct a broadband heterojunction PD.Firstly,experimental and theoretical results reveal that optoelectronic properties and stability of CsPbl3 PQDs are significantly improved through Er3+doping,owing to the reduced defect density,improved charge mobility,increased formation energy,tolerance factor,etc.The narrow bandgap of CsPbl3∶Er3+PQDs serves as a visible photosensitive layer of PD.Secondly,considering the matchable energy bandgap,the BHJ(BTP-4CI:PBDB-TF)is selected as to NIR absorption layer to fabricate the hybrid structure with CsPbl3∶Er3+PQDs.Thirdly,UV LC converts the UV light(200-400 nm)to visible light(400-700 nm),which is further absorbed by CsPbl3∶Er3+PQDs.In contrast with other perovskites PDs and commercial Si PDs,our PD presents a relatively wide response range and high detectivity especially in UV and NIR regions(two orders of magnitude increase that of commercial Si PDs).Furthermore,the PD also demonstrates significantly enhanced air-and UV-stability,and the photocurrent of the device maintains 81.5％of the original one after 5000 cycles.This work highlights a new attempt for designing broadband PDs,which has application potential in optoelectronic devices.
文献关键词：
中图分类号：
作者姓名：
Nan Ding;Yanjie Wu;Wen Xu;Jiekai Lyu;Yue Wang;Lu Zi;Long Shao;Rui Sun;Nan Wang;Sen Liu;Donglei Zhou;Xue Bai;Ji Zhou;Hongwei Song
作者机构：
State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China;Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission,Dalian Minzu University,Dalian 116600,China;State Kay Lab of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China
文献出处：
引用格式：
[1]Nan Ding;Yanjie Wu;Wen Xu;Jiekai Lyu;Yue Wang;Lu Zi;Long Shao;Rui Sun;Nan Wang;Sen Liu;Donglei Zhou;Xue Bai;Ji Zhou;Hongwei Song-.A novel approach for designing efficient broadband photodetectors expanding from deep ultraviolet to near infrared)[J].光：科学与应用（英文版）,2022(05):842-854
A类：
concentrators,Er3+doping,Er3+PQDs,matchable,4CI
B类：
novel,approach,designing,efficient,broadband,photodetectors,expanding,from,deep,ultraviolet,near,infrared,Broadband,photodetection,covering,range,desirable,various,optoelectronic,designs,Herein,we,employ,UV,luminescent,LC,iodine,quantum,dots,organic,bulk,heterojunction,BHJ,visible,NIR,photosensitive,layers,respectively,construct,Firstly,experimental,theoretical,results,reveal,that,properties,stability,CsPbl3,significantly,improved,through,owing,reduced,defect,density,charge,mobility,increased,formation,energy,tolerance,etc,narrow,bandgap,serves,Secondly,considering,BTP,PBDB,TF,selected,absorption,fabricate,hybrid,structure,Thirdly,converts,which,further,absorbed,by,In,contrast,other,perovskites,PDs,commercial,Si,our,presents,relatively,wide,response,detectivity,especially,regions,two,orders,magnitude,Furthermore,also,demonstrates,enhanced,air,photocurrent,maintains,original,one,after,cycles,This,work,highlights,new,attempt,has,application,potential,devices
AB值：
0.548276
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