响应度
材料科学
光电探测器
钙钛矿(结构)
光电子学
比探测率
量子效率
薄脆饼
晶体管
纳米技术
化学
结晶学
电气工程
工程类
电压
作者
Yucheng Liu,Yunxia Zhang,Zhou Yang,Haochen Ye,Jiangshan Feng,Zhuo Xu,Xu Zhang,Rahim Munir,Jia Liu,Pengjian Zuo,Qingxian Li,Mingxin Hu,Lina Meng,Kang Wang,Detlef‐M. Smilgies,Guangtao Zhao,Hua Xu,Zupei Yang,Aram Amassian,Jiawei Li,Kui Zhao,Shengzhong Liu
标识
DOI:10.1038/s41467-018-07440-2
摘要
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).
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