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dc.contributor.author변지영-
dc.contributor.author고형덕-
dc.contributor.author강구민-
dc.contributor.author김인수-
dc.contributor.author강준현-
dc.contributor.author라주아-
dc.date.accessioned2021-06-09T04:25:22Z-
dc.date.available2021-06-09T04:25:22Z-
dc.date.issued2021-02-
dc.identifier.citationVOL 538, 148007-
dc.identifier.issn0169-4332-
dc.identifier.other55808-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/72189-
dc.description.abstractWe present a perovskite photodetector functionalized with Au NPs assembled with 3-mercaptopropionic acid (MPA), a short-chain alkanethiol (HS(CH2)nCOOH, n = 2), where the assembled Au NPs are embedded in the PEDOT:PSS layer of the hole transport layer. The incorporation of the Au NPs-MPA assembly not only enhances the responsivity strongly, but also improves the detectivity due to a reduction in dark current and enhances the response speed of the device. In particular, the responsivity, noise equivalent power (NEP), and response speed of the Au NPs-MPA assembly device significantly improved by approximately 4.1, 15.6, and 2.8 folds, respectively, as compared with those of the pristine device under visible light illumination. Our device exhibits a responsivity of ~2063 A W?1 and a NEP of ~1.93 × 10-14 W Hz?1/2 due to the incorporation of the Au NPs-MPA assembly, and a response time of ~300 ns is achieved by the fabrication of a short channel in the device. The improved charge extraction/transport and optical absorption by the introduction of Au NPs-MPA assembly lead to the overall improved device performance.-
dc.publisherApplied surface science-
dc.titleHighly sensitive and fast perovskite photodetector functionalized by plasmonic Au nanoparticles-alkanethiol assembly-
dc.typeArticle-
dc.relation.page148007-
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