A Self-Powered and Flexible Organometallic Halide Perovskite Photodetector with Very High Detectivity
A Self-Powered and Flexible Organometallic Halide Perovskite Photodetector with Very High Detectivity
复制标题
DOI：
10.1002/adma.201704611
复制
发表时间：
2018-02-22
影响因子：
29.4
通讯作者：
He, Jr-Hau
中科院分区：
文献类型：
--
作者：
Leung, Siu-Fung;Ho, Kang-Ting;He, Jr-Hau
灵活的自供电光电探测器(PD)在图像传感、智能建筑和光通信中的应用是非常必要的。本文介绍了一种基于钙钛矿型甲基碘化铅(CH3NH3PbI3)的自供电柔性钯材料。这种自给式PD甚至可以在人类手指敲击等不规则运动下工作，这使得它可以在没有庞大的外部电源的情况下工作。此外，利用溶剂工程技术制备了高质量的CH3NH3PbI3钙钛矿薄膜，PD显示出令人印象深刻的1.22×10(13)Jones的探测率。在自供电电压检测模式下，可获得高达79.4V mW(-1)cm(-2)的高响应度和高达90%的电压响应。此外，由于PD是由柔性和透明的聚合物薄膜制成的，它可以在弯曲下工作，并在360埃的照度下工作。因此，自供电、灵活、360埃全方位钙钛矿型PD具有高探测率和响应性，以及现实世界的传感能力，为下一代光通信、传感和成像应用提供了新的方向。
Flexible and self-powered photodetectors (PDs) are highly desirable for applications in image sensing, smart building, and optical communications. In this paper, a self-powered and flexible PD based on the methylammonium lead iodide (CH3NH3PBI3) perovskite is demonstrated. Such a self-powered PD can operate even with irregular motion such as human finger tapping, which enables it to work without a bulky external power source. In addition, with high-quality CH3NH3PBI3 perovskite thin film fabricated with solvent engineering, the PD exhibits an impressive detectivity of 1.22 x 10(13) Jones. In the self-powered voltage detection mode, it achieves a large responsivity of up to 79.4 V mW(-1) cm(-2) and a voltage response of up to approximate to 90%. Moreover, as the PD is made of flexible and transparent polymer films, it can operate under bending and functions at 360 angstrom of illumination. As a result, the self-powered, flexible, 360 angstrom omnidirectional perovskite PD, featuring high detectivity and responsivity along with real-world sensing capability, suggests a new direction for next-generation optical communications, sensing, and imaging applications.