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

Wei Hu; Wei Huang; Shuzhen Yang; Xiao Wang; Zhenyu Jiang; Xiaoli Zhu; Hong Zhou; Hongjun Liu; Qinglin Zhang; Xiujuan Zhuang; Junliang Yang; Dong Ha Kim; Anlian Pan

doi:10.1002/adma.201703256

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

Adv Mater. 2017 Nov;29(43). doi: 10.1002/adma.201703256. Epub 2017 Oct 9.

Authors

Wei Hu^{1

2}, Wei Huang^{1

2}, Shuzhen Yang^{1

2}, Xiao Wang^{1

2}, Zhenyu Jiang^{1

2}, Xiaoli Zhu^{1

2}, Hong Zhou^{1

2}, Hongjun Liu^{1

2}, Qinglin Zhang^{1

2}, Xiujuan Zhuang^{1

2}, Junliang Yang³, Dong Ha Kim⁴, Anlian Pan^{1

2}

Affiliations

¹ Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Physics and Electronics, Hunan University, Changsha, Hunan, 410082, P. R. China.
² Synergetic Innovation Center for Quantum Effects and Application, Hunan Normal University, Changsha, 410081, P. R. China.
³ Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan, 410083, P. R. China.
⁴ Department of Chemistry and Nano Science, College of Natural Sciences, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.

PMID: 28991384
DOI: 10.1002/adma.201703256

Abstract

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.

Keywords: flexible perovskite photodetectors; organometal halide perovskites; thin-film photodetectors.