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High-Performance Transparent Conducting Metal Network Electrodes for Perovksite Photodetectors

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journal contribution
posted on 27.12.2017, 00:00 by Jie Yang, Chunxiong Bao, Kai Zhu, Tao Yu, Qingyu Xu
Transparent conducting electrodes with high transparency and conductivity are necessary components for optoelectronic devices. In this work, a facile wet-chemical lift-off process is first introduced to fabricate Au network flexible transparent electrodes with electrospun polymer fiber network as mask. Low resistance (5.18 Ω sq–1) of the transparent electrode was obtained when the transparency was around 90%, which was comparable to the state-of-the-art transparent electrodes. Low root-mean-square roughness of 23 nm was obtained when the Au nanowire thickness was 30 nm. The perovskite CH3NH3PbI3 photodetector based on the 30 nm thick Au network electrode shows a large linear dynamic range of 138 dB, a high detectivity over 1012 Jones, and better flexibility than that based on the commercial indium tin oxide electrode, which demonstrates that the Au network electrode is a promising flexible transparent conducting electrode for optoelectronic devices.