Multi-inch single-crystalline perovskite membrane for high-detectivity flexible photosensors

Yucheng Liu, Yunxia Zhang, Zhou Yang, Haochen Ye, Jiangshan Feng, Zhuo Xu, Xu Zhang, Rahim Munir, Jia Liu, Ping Zuo, Qingxian Li, Mingxin Hu, Lina Meng, Kang Wang, Detlef-M. Smilgies, Guangtao Zhao, Hua Xu, Zupei Yang, Aram Amassian, Jiawei Li, Kui Zhao () and Shengzhong(Frank) Liu ()
Additional contact information
Yucheng Liu: Shaanxi Normal University
Yunxia Zhang: Shaanxi Normal University
Zhou Yang: Shaanxi Normal University
Haochen Ye: Shaanxi Normal University
Jiangshan Feng: Shaanxi Normal University
Zhuo Xu: Shaanxi Normal University
Xu Zhang: Chinese Academy of Sciences
Rahim Munir: King Abdullah University of Science and Technology (KAUST)
Jia Liu: Shaanxi Normal University
Ping Zuo: Shaanxi Normal University
Qingxian Li: Shaanxi Normal University
Mingxin Hu: Shaanxi Normal University
Lina Meng: Shaanxi Normal University
Kang Wang: Shaanxi Normal University
Detlef-M. Smilgies: Cornell University
Guangtao Zhao: Shaanxi Normal University
Hua Xu: Shaanxi Normal University
Zupei Yang: Shaanxi Normal University
Aram Amassian: King Abdullah University of Science and Technology (KAUST)
Jiawei Li: Shaanxi Normal University
Kui Zhao: Shaanxi Normal University
Shengzhong(Frank) Liu: Shaanxi Normal University

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: Abstract Single crystalline perovskites exhibit high optical absorption, long carrier lifetime, large carrier mobility, low trap-state-density and high defect tolerance. Unfortunately, all single crystalline perovskites attained so far are limited to bulk single crystals and small area wafers. As such, it is impossible to design highly demanded flexible single-crystalline electronics and wearable devices including displays, touch sensing devices, transistors, etc. Herein we report a method of induced peripheral crystallization to prepare large area flexible single-crystalline membrane (SCM) of phenylethylamine lead iodide (C6H5C2H4NH3)2PbI4 with area exceeding 2500 mm2 and thinness as little as 0.6 μm. The ultrathin flexible SCM exhibits ultralow defect density, superior uniformity and long-term stability. Using the superior ultrathin membrane, a series of flexible photosensors were designed and fabricated to exhibit very high external quantum efficiency of 26530%, responsivity of 98.17 A W−1 and detectivity as much as 1.62 × 1015 cm Hz1/2 W−1 (Jones).

Date: 2018
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DOI: 10.1038/s41467-018-07440-2

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