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dc.contributor.authorChen, Sung-Wen Huangen_US
dc.contributor.authorWang, Sheng-Wenen_US
dc.contributor.authorHong, Kuo-Binen_US
dc.contributor.authorMedin, Henryen_US
dc.contributor.authorChung, Chieh-Hanen_US
dc.contributor.authorWu, Chun-Chiaen_US
dc.contributor.authorSu, Teng-Yuen_US
dc.contributor.authorLai, Fang-Ien_US
dc.contributor.authorLee, Po-Tsungen_US
dc.contributor.authorKuo, Shou-Yien_US
dc.contributor.authorKuo, Hao-Chungen_US
dc.contributor.authorChueh, Yu-Lunen_US
dc.date.accessioned2019-04-02T05:58:17Z-
dc.date.available2019-04-02T05:58:17Z-
dc.date.issued2019-02-14en_US
dc.identifier.issn2050-7526en_US
dc.identifier.urihttp://dx.doi.org/10.1039/c8tc04097den_US
dc.identifier.urihttp://hdl.handle.net/11536/148914-
dc.description.abstractIn the present study, novel MoS2 bilayers with 3D structures were considered for their application as wavelength-sensitive photodetectors. Using e-gun deposition and a CVD process, MoS2 bilayers can be grown conformally on a patterned (cones or pyramids) sapphire substrate without any wrinkles on the 2D film. After the sulfurization process, the MoS2 bilayer is subjected to a local strain in the patterns and its band gap gets enlarged due to the strain. This phenomenon is beneficial for photo-devices to enable the collection of the photocurrent. Measurements revealed a broadband enhancement of the MoS2-based photodetector with a patterned array in terms of both absorption and photocurrent. It is noteworthy that a cone-patterned sapphire substrate (CPSS) is able to generate more photocurrent when illuminated under blue light illumination, whereas the pyramid-patterned sapphire substrate (PPSS) performs best under green and red light illumination. Simulations of the electric field distributions for MoS2 coatings on different substrates, based on 3D models, revealed that the sensitivity of the MoS2-based photodetector can be greatly enhanced by the light-scattering effect.en_US
dc.language.isoen_USen_US
dc.titleEnhanced wavelength-selective photoresponsivity with a MoS2 bilayer grown conformally on a patterned sapphire substrateen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c8tc04097den_US
dc.identifier.journalJOURNAL OF MATERIALS CHEMISTRY Cen_US
dc.citation.volume7en_US
dc.citation.spage1622en_US
dc.citation.epage1629en_US
dc.contributor.department光電工程學系zh_TW
dc.contributor.department光電工程研究所zh_TW
dc.contributor.departmentDepartment of Photonicsen_US
dc.contributor.departmentInstitute of EO Enginerringen_US
dc.identifier.wosnumberWOS:000459572600018en_US
dc.citation.woscount0en_US
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