首页|High-performance broadband photodetector based on PtSe2/MoS2 heterojunction from visible to near-infrared region
High-performance broadband photodetector based on PtSe2/MoS2 heterojunction from visible to near-infrared region
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Broadband photodetectors based on narrow bandgap 2D materials have garnered considerable interest for application in the field of optoelectronic devices.However,their large dark current hinders device performance.In this work,a PtSe2/MoS2 heterojunction was fabricated for a broadband photodetector operating within the range of visible to near-infrared.The device exhibited suppressed dark currents with a high rectification ratio of 104.The built-in electric field of the heterojunction promoted carrier separation effectively,and the device achieved excellent photoelectric performance with responsivities of 1.7 × 103,27.52,and 21 mA/W at 635,785,and 1550 nm wavelengths,respectively.Moreover,the specific detectivities(D*)were 2.2 × 1013 Jones(635 nm),3.55 × 1011 Jones(785 nm),and 2.72 × 108 Jones(1550 nm).The device demonstrated a rise/fall time of 131/241 μs under 1550 nm laser illumination.Visible and near-infrared imaging detection was also demonstrated based on the heterojunction device at room temperature.This work sheds light on the remarkable potential of PtSe2/MoS2 heterojunctions in the domain of high-performance broadband photodetectors.
photodetectorPtSe2/MoS2heterojunctionvisible to near infraredhigh performance
Bin WANG、Jian YUAN、Mengqi CHE、Mingxiu LIU、Yuting ZOU、Junru AN、Fan TAN、Yaru SHI、Nan ZHANG、Liujian QI、Shaojuan LI
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State Key Laboratory of Luminescence and Applications,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China
University of Chinese Academy of Sciences,Beijing 100049,China
State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China
School of Physics and Electronic Information,Huaibei Normal University,Huaibei 235000,China
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国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金吉林省自然科学基金吉林省自然科学基金Changchun Key Research and Development ProgramOpen Fund of State Key Laboratory of Applied Optics
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