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http://dx.doi.org/10.3938/jkps.73.1675

Polymer Passivation Effect on Methylammonium Lead Halide Perovskite Photodetectors  

Kim, Hyojung (Department of Energy Science, Sungkyunkwan University)
Byun, Hye Ryung (Department of Energy Science, Sungkyunkwan University)
Kim, Bora (Department of Energy Science, Sungkyunkwan University)
Kim, Sung Hyuk (Department of Energy Science, Sungkyunkwan University)
Oh, Hye Min (Department of Energy Science, Sungkyunkwan University)
Jeong, Mun Seok (Department of Energy Science, Sungkyunkwan University)
Publication Information
Journal of the Korean Physical Society / v.73, no.11, 2018 , pp. 1675-1678 More about this Journal
Abstract
Methylammonium lead halide ($MAPbI_3$) perovskites are considered as promising materials owing to their excellent optical and electrical properties. However, perovskite materials suffer from degradation in air, which limits their practical applications. Here, we demonstrate successful passivation of the $MAPbI_3$ photodetectors through monochloro-para-xylylene (Parylene-C) deposition. The time-dependent photocurrent characteristics were systematically investigated, and we achieved significantly improved device performance and stability with Parylene-C passivation. Based on the excitation-power-dependent photoluminescence (PL) data, we confirmed that Parylene-C can reduce the carrier losses in $MAPbI_3$, leading to the enhancement of photocurrent and PL in $MAPbI_3$ photodetectors.
Keywords
Perovskite; Parylene-C; Polymer passivation;
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