Highly DUV to NIR-II responsive broadband quantum dots heterojunction photodetectors by integrating quantum cutting luminescent concentrators  

作　　者：Nan Ding Wen Xu Hailong Liu Yuhan Jing Zewen Wang Yanan Ji Jinlei Wu Long Shao Ge Zhu Bin Dong 

机构地区：[1]Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission,School of Physics and Materials Engineering,Dalian Minzu University,18 Liaohe West Road,Dalian 116600,China

出　　处：《Light(Science & Applications)》2024年第12期3076-3089,共14页光(科学与应用)(英文版)

基　　金：supported by the Artificial Intelligence Innovation and Development Foundation of Liaoning Province(2023JH26/10300023);the National Natural Science Foundation of China(12404450,U21A2074,11974143,11974069,62305045,12104084 and 62222502);the Liaoning Bai Qian Wan Talents Program(2021921012);the Young Top Talents of Liaoning Province Xingliao Talent Plan(XLYC2203170);the Science and Technique Foundation of Dalian(2022JJ11CG003);the Science and Technique Foundation of Liaoning Province(2023JH1/10400057,2023JH1/10400080,2023JH2/101700309);the Outstanding Young Scientific and Technological Talents of Dalian(2021RJ07);the Basic Scientific Research Project of Education Department of Liaoning Province(LJKQZ20222455),the Dalian Science and Technology Talents Innovation Support Program Project(2022RQ020);State Key Laboratory of Advanced Optical Communication Systems and Networks(2023GZKF06);the Fundamental Research Funds for the Central Universities(04442024071).

摘　　要：Low-cost,high-performance,and uncooled broadband photodetectors(PDs)have potential applications in optical communication etc.,but it still remains a huge challenge to realize deep UV(DUV)to the second near-infrared(NIR-II)detection for a single broadband PD.Herein,a single PD affording broadband spectral response from 200 to 1700 nm is achieved with a vertical configuration based on quantum dots(QDs)heterojunction and quantum cutting luminescent concentrators(QC-LC).A broadband quantum dots heterojunction as absorption layer was designed by integrating CsPbI_(3):Ho^(3+)perovskite quantum dots(PQDs)and PbS QDs to realize the spectral response from 400 to 1700 nm.The QC-LC by employing CsPbCl3:Cr^(3+),Ce^(3+),Yb^(3+),Er^(3+)PQDs as luminescent conversion layer to collect and concentrate photon energy for boosting the DUV-UV(200-400 nm)photons response of PDs by waveguide effect.Such broadband PD displays good stability,and outstanding sensitivity with the detectivity of 3.19×10^(12)Jones at 260 nm,1.05×10^(13)Jones at 460 nm and 2.23×10^(12)Jones at 1550 nm,respectively.The findings provide a new strategy to construct broadband detector,offering more opportunities in future optoelectronic devices.

关 键 词：integrating quantum HIGHLY 

分 类 号：R52[医药卫生—内科学]