Broadband, sensitive and spectrally distinctive SnS_(2) nanosheet/PbS colloidal quantum dot hybrid photodetector

Liang Gao; Chao Chen; Kai Zeng; Cong Ge; Dun Yang; Haisheng Song; Jiang Tang

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Broadband, sensitive and spectrally distinctive SnS_(2) nanosheet/PbS colloidal quantum dot hybrid photodetector

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Photodetectors convert photons into current or voltage outputs and are thus widely used for spectroscopy,imaging and sensing.Traditional photodetectors generally show a consistent-polarity response to incident photons within their broadband responsive spectrum.Here we introduced a new type of photodetector employing SnS_(2) nanosheets sensitized with PbS colloidal quantum dots(CQDs)that are not only sensitive(~105AW−1)and broadband(300–1000 nm)but also spectrally distinctive,that is,show distinctive(positive or negative)photoresponse toward incident photons of different wavelengths.A careful mechanism study revealed illumination-modulated Schottky contacts between SnS_(2) nanosheets and Au electrodes,altering the photoresponse polarity toward incident photons of different wavelengths.Finally,we applied our SnS_(2) nanosheet/PbS CQDs hybrid photodetector to differentiate the color temperature of emission from a series of white light-emitting diodes(LEDs),showcasing the unique application of our novel photodetectors.

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《光：科学与应用（英文版）》 |2016年第1期|590-597|共8页
作者
Liang Gao; Chao Chen; Kai Zeng; Cong Ge; Dun Yang; Haisheng Song; Jiang Tang;
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作者单位

Wuhan National Laboratory for Optoelectronics(WNLO)and School of Optical and Electronic Information;

Huazhong University of Science and Technology(HUST);

Wuhan 430074;

China;

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原文格式 PDF
正文语种 chi
中图分类半导体技术;
关键词
PbS colloidal quantum dot; photodetector; SnS2 nanosheet; spectrally distinctive;

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2. Surface?Modified Graphene Oxide/Lead Sulfide Hybrid Film?Forming Ink for High?Efficiency Bulk Nano?Heterojunction Colloidal Quantum Dot Solar Cells [J] . Yaohong Zhang ,Qing Shen ,Guohua Wu . 安徽地质 . 2020,第9期
3. Colloidal quantum dot lasers and hybrid integrations [J] . Jianjun Chen . 半导体学报：英文版 . 2019,第5期

Broadband, sensitive and spectrally distinctive SnS_(2) nanosheet/PbS colloidal quantum dot hybrid photodetector

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