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Self-driven highly responsive p-n junction In Se heterostructure near-infrared light detector

Photonics Research 2022年第7期10卷 I0001-I0009页

作者： CHANDRAMAN PATIL CHAOBO DONG HAO WANG behrouz MOVAHHED NOURI SERGIY KRYLYUK HUAIRUO ZHANG ALBERT V.DAVYDOV HAMED DALIR VOLKER J.SORGER Department of Electrical and Computer Engineering George Washington UniversityWashingtonD.C.20052USA Optelligence LLC Upper MarlboroMaryland 20772USA Materials Science and Engineering Division National Institute of Standards and TechnologyGaithersburgMaryland 20899USA Theiss Research Inc.La JollaCalifornia 92037USA

Photodetectors converting light signals into detectable photocurrents are ubiquitously in use *** improve the compactness and performance of next-generation devices and systems,low dimensional materials provide rich physics to engineering the light-matter *** based on two-dimensional(2D)material van der Waals heterostructures have shown high responsivity and compact integration capability,mainly in the visible range due to their intrinsic *** spectral region of near-infrared(NIR)is technologically important,featuring many data communication and sensing *** some initial NIR 2D material-based detectors have emerged,demonstrations of doping-junction-based 2D material photodetectors with the capability to harness the charge-separation photovoltaic effect are yet ***,we demonstrate a 2D p-n van der Waals heterojunction photodetector constructed by vertically stacking p-type and n-type indium selenide(In Se)*** heterojunction charge-separation-based photodetector shows a threefold enhancement in responsivity in the NIR spectral region(980 nm)as compared to photoconductor detectors based on p-or n-only doped In *** show that this junction device exhibits self-powered photodetection operation,exhibits few p A-low dark currents,and is about 3-4 orders of magnitude more efficient than the state-of-the-art foundry-based *** capability opens doors for low noise and low photon flux photodetectors that do not rely on external *** further demonstrate millisecond response rates in this sensitive zero-bias voltage *** sensitive photodetection capability in the technologically relevant NIR wavelength region at low form factors holds promise for several applications including wearable biosensors,three-dimensional(3D)sensing,and remote gas sensing.

关键词： heterojunction light separation

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C++面向对象程序设计

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作者： (美)贝赫鲁兹·A. 佛罗赞(behrouz A. Forouzan)，(美)理查德·F. 吉尔伯格(Richard F. Gilberg)

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