High-performance self-powered perovskite photodetector for visible light communication
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High‑performance self‑powered perovskite photodetector for visible light communication Zhenzhen Ma1 · Yating Zhang1 · Tengteng Li1 · Xin Tang1 · Hongliang Zhao1 · Jiahui Li1 · Chengqi Ma1 · Jianquan Yao1 Received: 21 July 2020 / Accepted: 4 October 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Real-time, accurate, and portable detection of wireless signal is a crucial part of mobile communication. A highly sensitive detector with quickly response is the indispensable component for obtaining optical signal. Organic/inorganic hybrid perovskite (CH3NH3PbI3) has been fabricated to photodetectors with a rapid response time and high responsivity by optimizing the quality of photosensitive layer with appropriate transport layer. The devices show high responsivity of 436 mA W−1 at 753 nm, fast response time of 1.7 μs, large linear dynamic range of 106 dB, as well as 75 kHz bandwidth, all under zero bias. Attributing to these prominent characteristics, this perovskite photodetector was integrated into an optical communication system, serving as a light sensor in receiver terminal. With it, the string, text and data files are transmitted by coded light successfully, accurately and rapidly. These results show the great potential of applications in visible light detection for organic/inorganic hybrid perovskite junction photodetectors. Keywords Self-powered · Perovskite · Photodetector · High performance · Visible light communication
1 Introduction Photodetectors (PDs) are the basis of optical communication and biological sensing applications, and are vital functional components as optical signal receivers in many electronic products [1–3]. Most of the materials used in PDs are known to have high manufacturing costs [2] (e.g., silicon and indium gallium arsenide) or low carrier mobilities [4] (e.g., organic semiconductors and quantum dots) that hamper their wide applications. Solution-processed hybrid perovskite films have drawn increasing attention because Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00339-020-04056-6) contains supplementary material, which is available to authorized users. * Yating Zhang [email protected] * Jianquan Yao [email protected] 1
Key Laboratory of Opto‑Electronics Information Technology (Tianjin University), Ministry of Education, School of Precision Instruments and Opto‑Electronics Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
of their large optical absorption coefficient, long charge carrier lifetime and diffusion length, as well as low cost, which strongly illustrates their considerable potential in PD applications [5–10]. By combine perovskite with other materials, constructing p–n junctions, Schottky junctions, or organic–inorganic hybrid junctions, photogenerated electron–hole pairs quickly separate driven by build-in electric field, so an external voltage/current is formed, which is termed self-powered. Numerous recent studies have shown that the self-powered PDs, as a
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