首页|High-performance self-powered GaN/PEDOT:PSS hybrid heterojunction UV photodetector for optical communication

High-performance self-powered GaN/PEDOT:PSS hybrid heterojunction UV photodetector for optical communication

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Self-powered ultraviolet photodetectors(UVPDs)provide great possibility for the next-generation energy conservation optical communication technology;while the high photodetection performance at zero bias is still a tremendous challenge.Herein,n-type GaN film with Si-doping concentration of～1018 cm-3 and p-type organic PEDOT:PSS were adopted to construct a planar hybrid heterojunction via the simple spin-coating method.Profited from typical type-Ⅱ energy band alignment and giant photovoltaic effect at GaN/PEDOT:PSS inorganic-organic interface,the fabricated UVPD achieved excellent self-powered photoelectrical properties in dual-band with large R of 0.96 A/W(2.8 A/W),superior D* of 5.7× 1012 Jones(1.7×1013 Jones),prominent EQE of 325％(1371％),high on/off ratio of 9.65× 103(6.15x103)and fast rise/decay time of 60.7/124.5 ms(30.9/26.7 ms)for UVA(UVC)band,as well as outstanding UV/visible rejection ratio and great detection repeatability.Functioned as an optical signal receiver,this designed self-powered UVPD decoded a message of"NJUPT"from a simple optical communication system.These results open a new avenue for GaN/PEDOT:PSS heterojunction in UV communications and related applications.

GaNUV photodetectorself-poweredheterojunctionoptical communication

LI Shan、LIU Zeng、ZHANG MaoLin、YANG LiLi、GUO YuFeng、TANG WeiHua

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College of Integrated Circuit Science and Engineering & National and Local Joint Engineering Laboratory for RF Integration and Micro-Packing Technologies,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

National Key Research and Development Program of ChinaJoint Funds of the National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Higher Education InstitutionsNatural Science Research Startup Foundation of Recruiting Talents of NJUPTNatural Science Research Startup Foundation of Recruiting Talents of NJUPT

2022YFB3605404U23A2034962305171BK2023036123KJB510017XK1180922062XK1060921002

2024

10.1007/s11431-023-2501-5

中国科学:技术科学(英文版)
中国科学院

中国科学:技术科学(英文版)

CSTPCDEI
影响因子：1.056
ISSN：1674-7321
年,卷(期)：2024.67(2)
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