Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79943
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dc.contributor.authorZhang, ZXen_US
dc.contributor.authorZeng, LHen_US
dc.contributor.authorTong, XWen_US
dc.contributor.authorGao, Yen_US
dc.contributor.authorXie, Cen_US
dc.contributor.authorTsang, YHen_US
dc.contributor.authorLuo, LBen_US
dc.contributor.authorWu, YCen_US
dc.date.accessioned2018-12-21T07:13:59Z-
dc.date.available2018-12-21T07:13:59Z-
dc.date.issued2018-
dc.identifier.citationJournal of physical chemistry letters, 15 Mar. 2018, v. 9, no. 6, p. 1185-1194en_US
dc.identifier.urihttp://hdl.handle.net/10397/79943-
dc.description.abstractWe report on the large-scale synthesis of polycrystalline multilayer PtSe2 film with typical semimetallic characteristics. With the availability of the large-area film, we constructed a heterojunction composed of multilayer PtSe2 and Cs-doped FAPbI(3), which can function as a self-driven photodetector in a broadband wavelength from the ultraviolet to the near-infrared region. Further photoresponse analysis revealed that the heterojunction device showed outstanding photosensitive characteristics with a large I-light/I-dark ratio of 5.7 x 10(3), high responsivity of 117.7 mA W-1, and decent specific detectivity of 2.91 x 10(12) Jones at zero bias. More importantly, the rise/fall times were estimated to be 78/60 ns, rendering our device the fastest device among perovskite-2D photodetectors reported to date. In addition, it was also observed that the PtSe2/perovskite photodetector can almost retain its photoresponse properties after storage in ambient conditions for 3 weeks. This study suggests the potential of the present PtSe2/perovskite heterojunction for future air-stable ultrafast photodetecting applications.en_US
dc.description.sponsorshipDepartment of Applied Physicsen_US
dc.description.sponsorshipMaterials Research Centreen_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.ispartofJournal of physical chemistry lettersen_US
dc.titleUltrafast, self-driven, and air-stable photodetectors based on multilayer PtSe2/perovskite heterojunctionsen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1185-
dc.identifier.epage1194-
dc.identifier.volume9-
dc.identifier.issue6-
dc.identifier.doi10.1021/acs.jpclett.8b00266-
dc.identifier.isiWOS:000427910200002-
dc.identifier.scopus2-s2.0-85044000847-
dc.identifier.pmid29464954-
dc.identifier.eissn1948-7185-
dc.identifier.rosgroupid2017002629-
dc.description.ros2017-2018 > Academic research: refereed > Publication in refereed journal-
dc.description.validate201812 bcrc-
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