Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
Adv Mater. 2018 Feb;30(8). doi: 10.1002/adma.201704611. Epub 2018 Jan 10.
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 (CH NH PBI ) 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 CH NH PBI perovskite thin film fabricated with solvent engineering, the PD exhibits an impressive detectivity of 1.22 × 10 Jones. In the self-powered voltage detection mode, it achieves a large responsivity of up to 79.4 V mW cm and a voltage response of up to ≈90%. Moreover, as the PD is made of flexible and transparent polymer films, it can operate under bending and functions at 360 ° of illumination. As a result, the self-powered, flexible, 360 ° 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.
自供电和灵活的光电探测器（PD）在图像感应、智能建筑和光通信等应用中非常理想。本文展示了一种基于甲脒碘化铅（CHNH PBI）钙钛矿的自供电和灵活 PD。这种自供电 PD 甚至可以在不规则运动（如人手指敲击）下工作，因此无需笨重的外部电源。此外，通过溶剂工程制备高质量的 CHNH PBI 钙钛矿薄膜，PD 的探测率达到了惊人的 1.22×10 Jones。在自供电电压检测模式下，它实现了高达 79.4 V mW cm 的大响应率和约 90%的电压响应。此外，由于 PD 由柔性透明聚合物薄膜制成，因此它可以在弯曲状态下工作，并且可以在 360°的光照下工作。因此，这种自供电、灵活、360°全方位的钙钛矿 PD 具有高探测率和响应率以及实际传感能力，为下一代光通信、传感和成像应用提供了新的方向。
