Open Access
Light: Science and Applications, volume 5, issue 7, pages e16126
Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector
Publication type: Journal Article
Publication date: 2016-03-08
Journal:
Light: Science and Applications
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 19.4
ISSN: 20477538
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
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 SnS2 nanosheets sensitized with PbS colloidal quantum dots (CQDs) that are not only sensitive (~105 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 SnS2 nanosheets and Au electrodes, altering the photoresponse polarity toward incident photons of different wavelengths. Finally, we applied our SnS2 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. A photodetector that can distinguish low- and high-energy photons is useful for analyzing the color temperature of solid-state lighting. The detector, developed by Liang Gao and co-workers from Huazhong University of Science and Technology in China, is based on a nanosheet of tin disulphide (SnS2) that has been sensitized with lead sulfide (PbS) colloidal quantum dots. The detector is not only highly sensitive (responsivity of about 105 A W−1) and broadband in operation (wavelength coverage of 300–1000 nm), but it can also discriminate between light of different wavelengths. The device shows a negative photoresponse for low-energy (long-wavelength) photons and a positive photoresponse for high-energy (short-wavelength) photons. The team showed that this ability to distinguish between low- and high-energy photons enables the photodetector to differentiate between white light-emitting diodes (LEDs) with different colour temperatures.
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Citations by publishers
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Wiley
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IOP Publishing
7 publications, 5.93%
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Multidisciplinary Digital Publishing Institute (MDPI)
4 publications, 3.39%
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IEEE
4 publications, 3.39%
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American Physical Society (APS)
2 publications, 1.69%
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Pleiades Publishing
1 publication, 0.85%
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Optical Society of America
1 publication, 0.85%
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Walter de Gruyter
1 publication, 0.85%
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Hindawi Limited
1 publication, 0.85%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.85%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Gao L. et al. Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector // Light: Science and Applications. 2016. Vol. 5. No. 7. p. e16126.
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Gao L., Chen C., Zeng K., Ge C., Yang D., Song H., Tang J. Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector // Light: Science and Applications. 2016. Vol. 5. No. 7. p. e16126.
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TY - JOUR
DO - 10.1038/lsa.2016.126
UR - https://doi.org/10.1038/lsa.2016.126
TI - Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector
T2 - Light: Science and Applications
AU - Gao, Liang
AU - Chen, Chao
AU - Zeng, Kai
AU - Ge, Cong
AU - Yang, Dun
AU - Song, Haisheng
AU - Tang, Jiang
PY - 2016
DA - 2016/03/08 00:00:00
PB - Springer Nature
SP - e16126
IS - 7
VL - 5
SN - 2047-7538
ER -
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@article{2016_Gao,
author = {Liang Gao and Chao Chen and Kai Zeng and Cong Ge and Dun Yang and Haisheng Song and Jiang Tang},
title = {Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector},
journal = {Light: Science and Applications},
year = {2016},
volume = {5},
publisher = {Springer Nature},
month = {mar},
url = {https://doi.org/10.1038/lsa.2016.126},
number = {7},
pages = {e16126},
doi = {10.1038/lsa.2016.126}
}
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MLA
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Gao, Liang, et al. “Broadband, sensitive and spectrally distinctive SnS2 nanosheet/PbS colloidal quantum dot hybrid photodetector.” Light: Science and Applications, vol. 5, no. 7, Mar. 2016, p. e16126. https://doi.org/10.1038/lsa.2016.126.