A low-dimension structure strategy for flexible photodetectors based on perovskite nanosheets/ZnO nanowires with broadband photoresponse  

低维结构策略构筑基于钙钛矿纳米片/氧化锌纳米线的柔性宽光谱探测器（英文）

作　　者：Shalong Wang Zhengfeng Zhu Yousheng Zou Yuhang Dong Shuting Liu Jie Xue Leimeng Xu Yuhui Dong Jizhong Song 王沙龙;朱正峰;邹友生;董宇航;刘舒婷;薛洁;许蕾梦;董宇辉;宋继中(Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology)

机构地区：[1]Key Laboratory of Advanced Display Materials and Devices,Ministry of Industry and Information Technology,College of Material Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Science China Materials》2020年第1期100-109,共10页中国科学（材料科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (51672132 and 61604074);the Natural Science Foundation of Jiangsu Province (BK20160827 and BK20180020);China Postdoctoral Science Foundation (2016M590455);Open foundation of Key Laboratory of Marine Materials and Related Technologies (2016K08);the Fundamental Research Funds for the Central Universities (30917011202);PAPD of Jiangsu Higher Education Institutions

摘　　要：Flexible photodetectors(PDs) have huge potential for application in next-generation optoelectronic devices due to their lightweight design, portability, and excellent large area compatibility. The main challenge in the construction of flexible PDs is to maintain the optoelectronic performance during repetitive bending, folding and stretching.Herein, flexible PDs based on ZnO nanowires(NWs) and CsPbBr3 nanosheets(NSs) were constructed by an integrated low-dimensional structure strategy. Benefiting from the flexibility of unique sheet and wire structures, the PDs were able to maintain excellent operational stability under various mechanical stresses. For example, the PDs exhibited no obvious changes in optoelectronic performance after bending for 1000 times. Additionally, the PDs exhibited an integrated broadband response ranging from ultraviolet to visible region due to the combination of the intrinsic light absorption capability of ZnO and CsPbBr3. The PDs demonstrated high responsivities of 3.10 and 0.97 A W^-1 and detectivities of 5.57×10^12 and1.71×10^12 Jones under ultraviolet and visible light irradiation,respectively. The proposed construction strategy for highly flexible and performance-integrated PDs shows great potential in future smart, wearable optoelectronic devices.柔性光电探测器具有轻便、易携带和优异的大面积兼容性等特点,在下一代光电子器件领域具有巨大的应用潜力.柔性光电探测器面临的主要挑战是在反复弯曲、拉伸、折叠等形变状态下难以保持优异的性能.本文通过低维度结构策略构筑了基于CsPbBr3纳米片和ZnO纳米线的柔性光电探测器.得益于一维纳米线和二维纳米片的高柔性,所构筑的光电探测器在各种应力下表现出优异的工作稳定性.例如,在弯曲1000次之后,器件的性能没有明显变化.此外,由于ZnO和CsPbBr3自身的光吸收特性,所构筑的柔性光电探测器展现出宽光谱光电响应能力(涵盖紫外和可见波段).在紫外和可见区域的峰值响应度分别为3.10和0.97 A W^-1,其相应的探测率分别为5.57×10^12和1.71×10^12Jones.本文针对柔性、高性能集成光电探测器提出的维度构筑策略,在未来智能、可穿戴光电子器件领域有着巨大的应用前景.

关 键 词：PEROVSKITE ZnO nanowires flexible photodetectors broad spectrum 

分 类 号：TN15[电子电信—物理电子学] TB383.1[一般工业技术—材料科学与工程]