Jintao Fu
Chinese Academy of Sciences
SemiconductorResponsivityResponse timeMaterials sciencePhotoconductivityPhotodetectorSpecific detectivityPhotocurrentGrapheneComposite structureOptoelectronicsSilicon on insulatorSiliconDopingHeterojunction
Publications 4
#1Hao Jiang (University of Electronic Science and Technology of China)H-Index: 2
#2Jintao Fu (CAS: Chinese Academy of Sciences)H-Index: 1
Last. Haofei Shi (CAS: Chinese Academy of Sciences)H-Index: 26
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Abstract null null In this paper, a position-sensitive detector (PSD) with an enhanced position detection performance has been proposed using graphene-silicon-on-insulator (GSOI) structure. By introducing the gate manipulation, the separation efficiency and diffusion speed of the photo-induced charges have been greatly improved. We experimentally observe a 10-fold increase in the generated photocurrent and the response time is shorten by around 8 times, compared to the counterpart without modula...
#1Hao JiangH-Index: 2
#2Changbin NieH-Index: 4
Last. Jiuxun SunH-Index: 1
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#1Jintao FuH-Index: 1
#2Longcheng QueH-Index: 5
Last. Zhou Dahua (CAS: Chinese Academy of Sciences)H-Index: 5
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The photoconductive detector based on a graphene-silicon heterostructure retains excellent optoelectrical properties, in which the graphene plays an indispensable role, acting as the carrier transporting channel. Herein, we systematically investigate by simulation and experiment how doping graphene will affect the performance of graphene-silicon hybrid photoconductors. Compared with lightly p-doped graphene devices, the responsivity can be made nine times better through increasing the p-type dop...
#1Hao Jiang (University of Electronic Science and Technology of China)H-Index: 2
#2Changbin Nie (CAS: Chinese Academy of Sciences)H-Index: 4
Last. Xingzhan Wei (CAS: Chinese Academy of Sciences)H-Index: 17
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The hybrid structures of graphene with semiconductor materials based on photogating effect have attracted extensive interest in recent years due to the ultrahigh responsivity. However, the responsivity (or gain) was increased at the expense of response time. In this paper, we devise a mechanism which can obtain an enhanced responsivity and fast response time simultaneously by manipulating the photogating effect (MPE). This concept is demonstrated by using a graphene/silicon-on-insulator (GSOI) h...
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