Broadband, sensitive and spectrally distinctive SnS<sub>2</sub> nanosheet/PbS colloidal quantum dot hybrid photodetector

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

doi:10.1038/lsa.2016.126

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Broadband, sensitive and spectrally distinctive SnS₂ nanosheet/PbS colloidal quantum dot hybrid photodetector

Original Articles

- Broadband, sensitive and spectrally distinctive SnS₂ nanosheet/PbS colloidal quantum dot hybrid photodetector
- Light: Science & Applications Vol. 5, Issue 3, (2016)
- Affiliations：
  
  Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
- Author bio：
  
  J Tang, Email: jtang@mail.hust.edu.cn
- Funds：
- DOI：10.1038/lsa.2016.126
  CLC：
- Published：2016-09，
  
  Published Online：08 March 2016，
  
  Received：02 November 2015，
  
  Revised：01 March 2016，
  
  Accepted：02 March 2016
- Accepted：
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Gao, L. et al. Broadband, sensitive and spectrally distinctive SnS₂ nanosheet/PbS colloidal quantum dot hybrid photodetector. Light: Science & Applications, 5, e16126 (2016).
DOI：

Gao, L. et al. Broadband, sensitive and spectrally distinctive SnS₂ nanosheet/PbS colloidal quantum dot hybrid photodetector. Light: Science & Applications, 5, e16126 (2016). DOI： 10.1038/lsa.2016.126.

摘要

Abstract

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

nanosheets sensitized with PbS colloidal quantum dots (CQDs) that are not only sensitive (~10

A W

−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

nanosheets and Au electrodes

altering the photoresponse polarity toward incident photons of different wavelengths. Finally

we applied our SnS

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.

关键词

Keywords

PbS colloidal quantum dotphotodetectorSnS2 nanosheetspectrally distinctive

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⁰

Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector

DOI：10.1038/lsa.2016.126

摘要

Abstract

关键词

Keywords

references

Broadband, sensitive and spectrally distinctive SnS₂ nanosheet/PbS colloidal quantum dot hybrid photodetector