期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 36, 页码 23868-23875出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b08318
关键词
perovskite; photodetector; flexibility; metal; nanowire network; transparent electrode
资金
- National Natural Science Foundation of China [61377051]
- National Basic Research Program of China [2013CB632404]
- Natural Science Foundation
- Key Research Project of Jiangsu Province [BK20130053, BK20141233, BE2015090]
- Scientific Research Foundation of Graduate School of Nanjing University [2014CL01]
Organolead trihalide perovskites (OTPs) such as CH3NH3PbI3 (MAPbI(3)) have attracted much attention as the absorbing layer in solar cells and photodetectors (PDs). Flexible OTP devices have also been developed. Transparent electrodes (TEs) with higher conductivity, stability, and flexibility are necessary to improve the performance and flexibility of flexible OTP devices. In this work, patterned Au nanowire (AuNW) networks with high conductivity and stability are prepared and used as TEs in self-powered flexible MAPbI3 PDs. These flexible PDs show peak external quantum efficiency and responsivity of 60% and 321 mA/W, which are comparable to those of MAPbI3 PDs, based on ITO TEs. The linear dynamic range and response time of the AuNW-based flexible PDs reach similar to 84 dB and similar to 4 mu s, respectively. Moreover, they show higher flexibility than ITO-based devices, around 90%, and 60% of the initial photocurrent can be retained for the AuNW-based flexible PDs when bent to radii of 2.5 and 1.5 min. This work suggests a high-performance, highly flexible, and stable TE for OTP flexible devices.
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