National Laboratory of Solid State Microstructures, ‡Ecomaterials and Renewable Energy Research Center (ERERC), Department of Physics, §Collage of Engineering and Applied Science, ∥Collaborative Innovation Center of Advanced Microstructures, and #Jiangsu Key Laboratory for Nano Technology, Nanjing University , Nanjing 210093, P. R. China.
ACS Appl Mater Interfaces. 2016 Sep 14;8(36):23868-75. doi: 10.1021/acsami.6b08318. Epub 2016 Aug 31.
Organolead trihalide perovskites (OTPs) such as CH3NH3PbI3 (MAPbI3) 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 ∼84 dB and ∼4 μs, 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 mm. This work suggests a high-performance, highly flexible, and stable TE for OTP flexible devices.
有机卤化铅钙钛矿（OTP），如 CH3NH3PbI3（MAPbI3），作为太阳能电池和光电探测器（PD）的吸收层引起了广泛关注。柔性 OTP 器件也已得到开发。为了提高柔性 OTP 器件的性能和灵活性，需要具有更高导电性、稳定性和灵活性的透明电极（TE）。在这项工作中，制备了具有高导电性和稳定性的图案化金纳米线（AuNW）网络，并将其用作自供电柔性 MAPbI3 PD 的 TE。这些柔性 PD 的外量子效率和响应度峰值分别达到 60%和 321 mA/W，与基于 ITO TE 的 MAPbI3 PD 相当。基于 AuNW 的柔性 PD 的线性动态范围和响应时间分别达到约 84 dB 和 4 μs。此外，它们比基于 ITO 的器件更具柔韧性，约为 90%，当弯曲到 2.5 和 1.5 mm 的半径时，基于 AuNW 的柔性 PD 的初始光电流仍可保留 60%。这项工作为 OTP 柔性器件提供了一种高性能、高柔韧性和稳定的 TE。
