Ultra-flexible semitransparent organic photovoltaics  

作　　者：Hanbee Lee Soyeong Jeong Jae-Hyun Kim Yong-Ryun Jo Hyeong Ju Eun Byoungwook Park Sung Cheol Yoon Jong H.Kim Seung-Hoon Lee Sungjun Park 

机构地区：[1]Department of Electrical and Computer Engineering,Ajou University,Suwon 16499,Republic of Korea [2]Department of Chemistry and Centre for Processable Electronics,Imperial College London,White City W120BZ,UK [3]Department of Intelligence Semiconductor Engineering,Ajou University,Suwon 16499,Republic of Korea [4]Advanced Photonics Research Institute(APRI),Gwangju Institute of Science and Technology(GIST),Gwangju 61005,Republic of Korea [5]Division of Molecular Science and Technology,Ajou University,Suwon 16499,Republic of Korea [6]Division of Advanced Materials,Korea Research Institute of Chemical Technology(KRICT),Daejeon 34114,Republic of Korea [7]Division of Advanced materials Engineering,Kongju National University,1223-24 Cheonan-daeroSeobuk-gu,Cheonan-si,Chungcheongnam-do,Republic of Korea

出　　处：《npj Flexible Electronics》2023年第1期274-282,共9页npj-柔性电子（英文）

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.RS-2023-00213089);supported by the Technology Innovation Program(Grant No.RS-2022-00154781,Development of large-area wafer-level flexible/stretchable hybrid sensor platform technology for form factor-free highly integrated convergence sensor)funded by the Ministry of Trade,Industry&Energy(MOTIE,Korea);supported by the MSIT,Korea,under the ITRC(Information Technology Research Center)support program(Grant No.IITP-2023-2020-0-01461)supervised by the IITP(Institute for Information&communications Technology Planning&Evaluation);supported by the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(NRF-2021K1A4A7A03093851).

摘　　要：Ultra-flexible organic photovoltaics(OPVs)are promising candidates for next-generation power sources owing to their low weight,transparency,and flexibility.However,obtaining ultra-flexibility under extreme repetitive mechanical stress while maintaining optical transparency remains challenging because of the intrinsic brittleness of transparent electrodes.Here,we introduce straindurable ultra-flexible semitransparent OPVs with a thickness below 2μm.The conformal surface coverage of nanoscale thin metal electrodes(<10 nm)is achieved,resulting in extremely low flexural rigidity and high strain durability.In-depth optical and electrical analyses on ultrathin metal electrodes showed that the devices maintain over 73%of their initial efficiency after 1000 cycles of repetitive compression and release at 66%compressive strain,and the average visible light transmittances remain higher than 30%.To our knowledge,this is the first systematical study on mechanical behaviors of strain-durable ultra-flexible ST-OPVs through precise adjustment of each ultrathin electrode thickness toward the emergence of next-generation flexible power sources.

关 键 词：TRANSPARENCY DURABILITY RIGIDITY 

分 类 号：O4[理学—物理]