Journal of Materials Science: Materials in Electronics
Effect of ZnS and PbS shell on mem-behavior of CdS quantum dots
2
Department of Mechanical Engineering, University of Huddersfield, Huddersfield, UK
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Publication type: Journal Article
Publication date: 2021-02-17
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 2.8
ISSN: 09574522, 1573482X
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering
Abstract
In this paper, a systematic study is carried out on mem-behavior of CdS, CdS@ZnS, and CdS@PbS core–shell nanocomposites with emphasis on the effect of ZnS and PbS shell on mem-behavior of CdS quantum dots. From X-ray diffraction, the CdS quantum dots are found to be hexagonal in nature with average crystallite size ~ 10.3 nm. From high-resolution transmission electron microscope images, the particle size is calculated around 3–4 nm for CdS quantum dots. For core–shell nanoparticles, formation of epitaxial shell layer on CdS core is clearly evident with enhancement in particle sizes. Active layer of as-synthesized samples is deposited on Indium tin oxide-coated glass which is used as one electrode. Aluminium is used as counter electrode and deposited over the active layer using thermal evaporation technique. The fabricated devices show bipolar switching characteristics with prominent hysteresis loops. The current–voltage characteristics of the devices show memristive, memcapacitive, and meminductive behavior depending on the type of active layer used. It is also observed that the inclusion of ZnS and $$\mathrm{PbS}$$ shell significantly alters the mem-behavior of the CdS quantum dots which is the major finding of this study. The conduction through the device is found to be due to coulomb blockade which also supports the ON/OFF switching mechanism. The sensitivity of the devices can be determined from RON/ROFF ratio, and it is found to be higher for CdS@ZnS core–shell nanoparticles compared to CdS quantum dots and CdS@PbS nanoparticles.
Top-30
Citations by journals
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1
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Optical and Quantum Electronics
1 publication, 25%
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Nanotechnology
1 publication, 25%
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Russian Chemical Reviews
1 publication, 25%
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Physica E: Low-Dimensional Systems and Nanostructures
1 publication, 25%
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1
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Citations by publishers
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1
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Springer Nature
1 publication, 25%
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IOP Publishing
1 publication, 25%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 25%
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Elsevier
1 publication, 25%
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1
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Das H., Xu Q., Datta P. Effect of ZnS and PbS shell on mem-behavior of CdS quantum dots // Journal of Materials Science: Materials in Electronics. 2021.
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Das H., Xu Q., Datta P. Effect of ZnS and PbS shell on mem-behavior of CdS quantum dots // Journal of Materials Science: Materials in Electronics. 2021.
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TY - JOUR
DO - 10.1007/s10854-021-05415-6
UR - https://doi.org/10.1007/s10854-021-05415-6
TI - Effect of ZnS and PbS shell on mem-behavior of CdS quantum dots
T2 - Journal of Materials Science: Materials in Electronics
AU - Das, Hirendra
AU - Xu, Qiang
AU - Datta, Pranayee
PY - 2021
DA - 2021/02/17 00:00:00
PB - Springer Nature
SN - 0957-4522
SN - 1573-482X
ER -
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@article{2021_Das,
author = {Hirendra Das and Qiang Xu and Pranayee Datta},
title = {Effect of ZnS and PbS shell on mem-behavior of CdS quantum dots},
journal = {Journal of Materials Science: Materials in Electronics},
year = {2021},
publisher = {Springer Nature},
month = {feb},
url = {https://doi.org/10.1007/s10854-021-05415-6},
doi = {10.1007/s10854-021-05415-6}
}