Advanced Materials
Advanced Materials
5 years ago

High-Performance Flexible Photodetectors based on High-Quality Perovskite Thin Films by a Vapor–Solution Method

High-Performance Flexible Photodetectors based on High-Quality Perovskite Thin Films by a Vapor–Solution Method
Dong Ha Kim, Junliang Yang, Anlian Pan, Qinglin Zhang, Zhenyu Jiang, Xiujuan Zhuang, Wei Hu, Wei Huang, Hong Zhou, Hongjun Liu, Xiaoli Zhu, Xiao Wang, Shuzhen Yang
Organometal halide perovskites are new light-harvesting materials for lightweight and flexible optoelectronic devices due to their excellent optoelectronic properties and low-temperature process capability. However, the preparation of high-quality perovskite films on flexible substrates has still been a great challenge to date. Here, a novel vapor–solution method is developed to achieve uniform and pinhole-free organometal halide perovskite films on flexible indium tin oxide/poly(ethylene terephthalate) substrates. Based on the as-prepared high-quality perovskite thin films, high-performance flexible photodetectors (PDs) are constructed, which display a nR value of 81 A W−1 at a low working voltage of 1 V, three orders higher than that of previously reported flexible perovskite thin-film PDs. In addition, these flexible PDs exhibit excellent flexural stability and durability under various bending situations with their optoelectronic performance well retained. This breakthrough on the growth of high-quality perovskite thin films opens up a new avenue to develop high-performance flexible optoelectronic devices. A novel vapor–solution method is developed to achieve uniform and pinhole-free organometal halide perovskite films on flexible indium tin oxide/poly(ethylene terephthalate) substrates. Based on the as-prepared high-quality perovskite thin films, high-performance flexible photodetectors are constructed with a very high R value, excellent flexural stability, and durability under various bending situations.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adma.201703256

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