A non-volatile “programmable” transparent multilevel ultra-violet perovskite photodetector
- Authors
- Kumar, Mohit; Kim, Hong-Sik; Park, Dae Young; Jeong, Mun Seok; Kim, Joondong
- Issue Date
- Jun-2018
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.10, no.24, pp.11392 - 11396
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCALE
- Volume
- 10
- Number
- 24
- Start Page
- 11392
- End Page
- 11396
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/149849
- DOI
- 10.1039/C8NR01959B
- ISSN
- 2040-3364
- 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 an 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)(2)PbBr4-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 approximate to 2 ms, good responsivity of approximate to 32 mA W-1 and detectivity of 8.5 x 10(8) Jones with a low working voltage of 0.5 V. Moreover, the photodetector shows long-term stability, and the 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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