Light Management in 2D Perovskite Toward High-Performance Optoelectronic Applications  

作　　者：Kailian Dong Tao Jiang Guoyi Chen Hongsen Cui Shuxin Wang Shun Zhou Chen Wang Yi Yang Fang Yao Chen Tao Weijun Ke Guojia Fang 

机构地区：[1]Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China,School of Physics and Technology,Wuhan University,Wuhan 430072,People’s Republic of China [2]School of Electronic and Electrical Engineering,Wuhan Textile University,Wuhan 430200,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第6期128-142,共15页纳微快报(英文版)

基　　金：the Key Research and Development Program sponsored by the Ministry of Science and Technology of China(2024YFE0201800);the National Natural Science Foundation of China(Nos.12134010,12174290);the Natural Science Foundation of Hubei Province,China(Grant Nos.2023BAB102 and 2021CFB039).

摘　　要：ABSTRACT Two-dimensional Dion-Jacobson(DJ)perovskite has garnered significant attention due to its superior responsivity and operation stability.However,efforts are predominantly focused on discovering new organic spacer to synthesize novel perovskites,while material-form-associated light management,which is crucial for enhancing the photodetector’s efficiency,is largely overlooked.Herein,we introduced surface light management strategy into DJ-type perovskite system by synthesizing surface-patterned BDAPbBr4(BPB,BDA=NH_(3)(CH_(2))_(4)NH_(3))microplates(MPs)using template-assisted space-confined method,which was further elucidated by theoretical optical simulation.By leveraging surface-patterned MPs to enhance light absorption,the BPB-based photodetectors(PDs)achieved remarkable photoresponse in ultraviolet region,marked by a high on/off ratio(~5000),superior responsivity(2.24 A W^(-1)),along with large detectivity(~10^(13) Jones)and low detection limit(68.7 nW cm^(-2)).Additionally,the PDs showcased superior light communication and imaging capabilities even under weak-light illumination.Notably,the anisotropic nature of the surface-patterned MPs conferred excellent polarization sensitivity to the PD.These results represented the first demonstration of BPB perovskite in weak-light communication and imaging,as well as in polarized light detection.Our findings offer valuable insights into enhancing photodetector performance and optoelectronic applications through surface light management strategies.

关 键 词：Light management Dion-Jacobson perovskite Surface-patterned Optoelectronic applications Polarization-sensitive 

分 类 号：O61[理学—无机化学]