Solution‐Processed, Self‐Powered Broadband CH3NH3PbI3 Photodetectors Driven by Asymmetric Electrodes
Source abstract
Abstract
Abstract In general, the fabrication of high‐performance, self‐powered broadband photodetectors based on traditional semiconducting thin films is tedious and costly. Here, in this paper a high‐performance, solution‐processed, and self‐powered CH3NH3PbI3 (MAPbI3) nanocrystal based photodetector ITO/MAPbI3/Ag is presented, and it shows broadband photoresponse from the visible to the near‐infrared wavelength region. The pronounced enhanced performance of the photodetector is due to taking the advantage of the built‐in electric field induced by the work function difference of two electrodes. The optimized photodetector shows a responsivity of 4.9 and 1.42 A W−1 with a specific detectivity of 7.6 × 1013 and 1.77 × 1013 Jones under 19 µW cm−2 white light illumination and 26 µW cm−2 808 nm illumination at zero bias, respectively. Therefore, such a concept of simple device geometry and feasible technique will open up a new and promising avenue for the fabrication of self‐powered photodetectors and the development of imaging devices.
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Research context
OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems School of Physics Beijing Institute of Technology Beijing 100081 P. R. China
Key Lab of Advanced Optoelectronic Quantum Design and Measurement Ministry of Education Beijing Institute of Technology Beijing 100081 P. R. China
Kunming Institute of Physics Kunming 650223 P. R. China
Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optoelectronics Beijing Institute of Technology Beijing 100081 P. R. China
Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology Beijing 100081 P. R. China
Funding
Beijing Institute of Technology · Ministry of Education of the People's Republic of China
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