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Non-volatile “Programmable” Transparent Multilevel Ultra-violet Perovskite Photodetector

Abstract

Due to their outstanding physical properties, perovskite materials are considered to be promising semiconductors for next-generation optoelectronics. However, these materials are often unstable under ambient atmosphere and ultra-violet illumination. Therefore, the construction of an air-stable visible light transparent perovskite-based ultra-violet photodetector is still highly challenging. In this study, we go beyond the conventional operation of photodetectors by utilizing the undesired hysteresis loop in the typical current-voltage characteristics of perovskites and design a (C4H9NH3)2PbBr4-based high-performance visible transparent programmable ultra-violet photodetector. The photodetector shows multiple operating levels and can switch from one level to another with a short electric pulse. The photodetector exhibits a fast response time of ~2 ms, good responsivity of ~32 mA W-1 and detectivity of 8.5×108 Jones with a low working voltage of 0.5 V. Moreover, the photodetector shows long-term stability, and optoelectronic performance is retained under ambient conditions. This breakthrough in the controlled tunable features opens a new avenue for the development of multipurpose transparent optoelectronic devices.

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Publication details

The article was received on 08 Mar 2018, accepted on 15 May 2018 and first published on 16 May 2018


Article type: Paper
DOI: 10.1039/C8NR01959B
Citation: Nanoscale, 2018, Accepted Manuscript
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    Non-volatile “Programmable” Transparent Multilevel Ultra-violet Perovskite Photodetector

    M. Kumar, H. Kim, D. Y. Park, M. S. Jeong and J. Kim, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01959B

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