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Kwak, Sang Kyu
Kyu’s MolSim Lab @ UNIST
Research Interests
  • Molecular modeling and simulation, statistical thermodynamics, molecular physics

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Perovskite Granular Wire Photodetectors with Ultrahigh Photodetectivity

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dc.contributor.author Lee, Yoon Ho ko
dc.contributor.author Song, Inho ko
dc.contributor.author Kim, Su Hwan ko
dc.contributor.author Park, Ju Hyun ko
dc.contributor.author Park, Sung O. ko
dc.contributor.author Lee, Jeong Hun ko
dc.contributor.author Won, Yousang ko
dc.contributor.author Cho, Kilwon ko
dc.contributor.author Kwak, Sang Kyu ko
dc.contributor.author Oh, Joon Hak ko
dc.date.available 2020-08-21T00:53:06Z -
dc.date.created 2020-07-16 ko
dc.date.issued 2020-06 ko
dc.identifier.citation ADVANCED MATERIALS, pp.2002357 ko
dc.identifier.issn 0935-9648 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/47582 -
dc.description.abstract Control over the morphology and crystallinity of metal halide perovskite materials is of key importance to enable high-performance optoelectronics. Here, a simple yet effective template-free self-assembly synthesis of perovskite granular wires with ultrahigh photodetectivity (3.17 x 10(15)Jones) is reported. The 1D self-assembly of perovskite grains is driven by differences in the surface interaction energies of the granular facets. The superb photodetecting performance originates from extremely low dark current engendered by energetic barriers featuring unique band-edge modulation along the long axis of wire. Flexible photodetector arrays, fabricated by selectively placing perovskite granular wires onto pre-patterned electrode arrays on a transparent polymer substrate, show independently addressable photonic signal mapping with remarkably high detectivity, photoconductive gain, and responsivity. The "self-assembled nanograin engineering" strategy developed in this study provides a viable method for the development of high-performance perovskite photodetectors and can be extended to other integrated optoelectronic systems. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Perovskite Granular Wire Photodetectors with Ultrahigh Photodetectivity ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85087181367 ko
dc.identifier.wosid 000543069500001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/adma.202002357 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/full/10.1002/adma.202002357 ko
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