Journal of Alloys and Compounds, volume 764, pages 446-451

High-sensitivity broadband colloidal quantum dot heterojunction photodetector for night-sky radiation

Junfeng Xu ¹

Haowei Wang ²

Sheng-Yi Yang ^{2, 3}

Guoqiang Ni ¹

Rui-Bin Liu ²

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Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, PR China |

Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, PR China |

The State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing, 100190, PR China |

Publication type: Journal Article

Publication date: 2018-10-01

Elsevier

Journal: Journal of Alloys and Compounds

Quartile SCImago

Quartile WOS

Impact factor: 6.2

ISSN: 09258388

DOI: 10.1016/j.jallcom.2018.06.105

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Materials Chemistry

Metals and Alloys

Mechanical Engineering

Mechanics of Materials

Abstract

Being with excellent photosensibility, bandgap tunability and solution processibility, lead sulfide (PbS) colloidal quantum dot (CQD) gets one of the most attracting nanomaterials for photodetectors and light-harvesting devices. Usually short ligands are used to passivate the surface of CQDs to enhance the carrier mobility in QD films, and different types of ligands show distinct influence on the physical/electrical properties on the passivated CQD films. In this paper, a high-sensitivity broadband photodetector based on PbS-EDT/PbS-TBAl heterojunction by band-alignment engineering was presented. After optimizing the thickness of PbS CQD films, we found that the maximum specific detectivity of the photodiode ITO/ZnO(40 nm)/PbS-TBAl(160 nm)/PbS-EDT(40 nm)/Au reached to 3.93 × 1013 Jones and 5.52 × 1013 Jones under 2.0 μW/cm2 910 nm and 1.9 μW/cm2 500 nm illuminations, respectively, showing excellent stability in air and high sensitivity to weak signal (i.e. night-sky radiation). Further, the device performance of photodiode ITO/ZnO/PbS-TBAl/PbS-EDT/Au is compared with that of the control device ITO/ZnO/PbS-TBAI/Au, and the underneath mechanism for the enhanced performance is discussed.

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Citations by journals

	1 2 3
Journal of Materials Chemistry C	Journal of Materials Chemistry C, 3, 13.64% Journal of Materials Chemistry C 3 publications, 13.64%
Nanotechnology	Nanotechnology, 2, 9.09% Nanotechnology 2 publications, 9.09%
Journal of Alloys and Compounds	Journal of Alloys and Compounds, 2, 9.09% Journal of Alloys and Compounds 2 publications, 9.09%
Journal of Materials Science and Technology	Journal of Materials Science and Technology, 2, 9.09% Journal of Materials Science and Technology 2 publications, 9.09%
Nanomaterials	Nanomaterials, 1, 4.55% Nanomaterials 1 publication, 4.55%
Journal of Photochemistry and Photobiology A: Chemistry	Journal of Photochemistry and Photobiology A: Chemistry, 1, 4.55% Journal of Photochemistry and Photobiology A: Chemistry 1 publication, 4.55%
Applied Surface Science	Applied Surface Science, 1, 4.55% Applied Surface Science 1 publication, 4.55%
Advanced Materials Technologies	Advanced Materials Technologies, 1, 4.55% Advanced Materials Technologies 1 publication, 4.55%
Advanced Functional Materials	Advanced Functional Materials, 1, 4.55% Advanced Functional Materials 1 publication, 4.55%
Journal of Physical Chemistry Letters	Journal of Physical Chemistry Letters, 1, 4.55% Journal of Physical Chemistry Letters 1 publication, 4.55%
Materials Chemistry Frontiers	Materials Chemistry Frontiers, 1, 4.55% Materials Chemistry Frontiers 1 publication, 4.55%
Polyoxometalates	Polyoxometalates, 1, 4.55% Polyoxometalates 1 publication, 4.55%
Optical Materials	Optical Materials, 1, 4.55% Optical Materials 1 publication, 4.55%
Dalton Transactions	Dalton Transactions, 1, 4.55% Dalton Transactions 1 publication, 4.55%
Russian Chemical Reviews	Russian Chemical Reviews, 1, 4.55% Russian Chemical Reviews 1 publication, 4.55%
Journal of Optics (India)	Journal of Optics (India), 1, 4.55% Journal of Optics (India) 1 publication, 4.55%
	1 2 3

Citations by publishers

	1 2 3 4 5
Elsevier	Elsevier, 5, 22.73% Elsevier 5 publications, 22.73%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 5, 22.73% Royal Society of Chemistry (RSC) 5 publications, 22.73%
Springer Nature	Springer Nature, 3, 13.64% Springer Nature 3 publications, 13.64%
IOP Publishing	IOP Publishing, 2, 9.09% IOP Publishing 2 publications, 9.09%
Wiley	Wiley, 2, 9.09% Wiley 2 publications, 9.09%
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 1, 4.55% Multidisciplinary Digital Publishing Institute (MDPI) 1 publication, 4.55%
American Chemical Society (ACS)	American Chemical Society (ACS), 1, 4.55% American Chemical Society (ACS) 1 publication, 4.55%
Tsinghua University Press	Tsinghua University Press, 1, 4.55% Tsinghua University Press 1 publication, 4.55%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 4.55% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 4.55%
	1 2 3 4 5

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Xu J. et al. High-sensitivity broadband colloidal quantum dot heterojunction photodetector for night-sky radiation // Journal of Alloys and Compounds. 2018. Vol. 764. pp. 446-451.

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Xu J., Wang H., Yang S., Ni G., Liu R. High-sensitivity broadband colloidal quantum dot heterojunction photodetector for night-sky radiation // Journal of Alloys and Compounds. 2018. Vol. 764. pp. 446-451.

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RIS Copy

TY - JOUR

DO - 10.1016/j.jallcom.2018.06.105

UR - https://doi.org/10.1016/j.jallcom.2018.06.105

TI - High-sensitivity broadband colloidal quantum dot heterojunction photodetector for night-sky radiation

T2 - Journal of Alloys and Compounds

AU - Xu, Junfeng

AU - Wang, Haowei

AU - Yang, Sheng-Yi

AU - Ni, Guoqiang

AU - Liu, Rui-Bin

PY - 2018

DA - 2018/10/01 00:00:00

PB - Elsevier

SP - 446-451

VL - 764

SN - 0925-8388

ER -

BibTex

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BibTex Copy

@article{2018_Xu,

author = {Junfeng Xu and Haowei Wang and Sheng-Yi Yang and Guoqiang Ni and Rui-Bin Liu},

title = {High-sensitivity broadband colloidal quantum dot heterojunction photodetector for night-sky radiation},

journal = {Journal of Alloys and Compounds},

year = {2018},

volume = {764},

publisher = {Elsevier},

month = {oct},

url = {https://doi.org/10.1016/j.jallcom.2018.06.105},

pages = {446--451},

doi = {10.1016/j.jallcom.2018.06.105}

}

Found error?

Publisher

Elsevier

Journal

Journal of Alloys and Compounds

Quartile SCImago

Quartile WOS

Impact factor

6.2

ISSN

09258388 (Print)