Gradient 2D/3D Perovskite Films Prepared by Hot-Casting for Sensitive Photodetectors.
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ABSTRACT: 2D Ruddlesden-Popper perovskites have attracted wide attention recently because of tunable optoelectronic properties and have been used as alternatives to their 3D counterparts in various optoelectronic devices. Here, a series of (PEA)2(MA) n -1Pb n I3 n +1 perovskite thin films is designed and fabricated by a convenient hot-casting method to obtain gradient n in the films, which leads to the formation of vertical heterojunctions that can enhance charge separation in the films under light illumination. Based on a single gradient perovskite film, a highly sensitive and stable photodetector with a responsivity up to 149 AW-1 and a specific detectivity of 2 × 1012 Jon
SUBMITTER: Loi HL
PROVIDER: S-EPMC7375231 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
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