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Photoconduction Properties in Tungsten Disulfide Nanostructures

We reported the photoconduction properties of tungsten disulfide (WS(2)) nanoflakes obtained by the mechanical exfoliation method. The photocurrent measurements were carried out using a 532 nm laser source with different illumination powers. The results reveal a linear dependence of photocurrent on...

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Autores principales: Bangolla, Hemanth Kumar, Lee, Yueh-Chien, Shen, Wei-Chu, Ulaganathan, Rajesh Kumar, Sankar, Raman, Du, He-Yun, Chen, Ruei-San
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421469/
https://www.ncbi.nlm.nih.gov/pubmed/37570508
http://dx.doi.org/10.3390/nano13152190
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author Bangolla, Hemanth Kumar
Lee, Yueh-Chien
Shen, Wei-Chu
Ulaganathan, Rajesh Kumar
Sankar, Raman
Du, He-Yun
Chen, Ruei-San
author_facet Bangolla, Hemanth Kumar
Lee, Yueh-Chien
Shen, Wei-Chu
Ulaganathan, Rajesh Kumar
Sankar, Raman
Du, He-Yun
Chen, Ruei-San
author_sort Bangolla, Hemanth Kumar
collection PubMed
description We reported the photoconduction properties of tungsten disulfide (WS(2)) nanoflakes obtained by the mechanical exfoliation method. The photocurrent measurements were carried out using a 532 nm laser source with different illumination powers. The results reveal a linear dependence of photocurrent on the excitation power, and the photoresponsivity shows an independent behavior at higher light intensities (400–4000 Wm(−2)). The WS(2) photodetector exhibits superior performance with responsivity in the range of 36–73 AW(−1) and a normalized gain in the range of 3.5–7.3 10(−6) cm(2)V(−1) at a lower bias voltage of 1 V. The admirable photoresponse at different light intensities suggests that WS(2) nanostructures are of potential as a building block for novel optoelectronic device applications.
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spelling pubmed-104214692023-08-12 Photoconduction Properties in Tungsten Disulfide Nanostructures Bangolla, Hemanth Kumar Lee, Yueh-Chien Shen, Wei-Chu Ulaganathan, Rajesh Kumar Sankar, Raman Du, He-Yun Chen, Ruei-San Nanomaterials (Basel) Article We reported the photoconduction properties of tungsten disulfide (WS(2)) nanoflakes obtained by the mechanical exfoliation method. The photocurrent measurements were carried out using a 532 nm laser source with different illumination powers. The results reveal a linear dependence of photocurrent on the excitation power, and the photoresponsivity shows an independent behavior at higher light intensities (400–4000 Wm(−2)). The WS(2) photodetector exhibits superior performance with responsivity in the range of 36–73 AW(−1) and a normalized gain in the range of 3.5–7.3 10(−6) cm(2)V(−1) at a lower bias voltage of 1 V. The admirable photoresponse at different light intensities suggests that WS(2) nanostructures are of potential as a building block for novel optoelectronic device applications. MDPI 2023-07-27 /pmc/articles/PMC10421469/ /pubmed/37570508 http://dx.doi.org/10.3390/nano13152190 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bangolla, Hemanth Kumar
Lee, Yueh-Chien
Shen, Wei-Chu
Ulaganathan, Rajesh Kumar
Sankar, Raman
Du, He-Yun
Chen, Ruei-San
Photoconduction Properties in Tungsten Disulfide Nanostructures
title Photoconduction Properties in Tungsten Disulfide Nanostructures
title_full Photoconduction Properties in Tungsten Disulfide Nanostructures
title_fullStr Photoconduction Properties in Tungsten Disulfide Nanostructures
title_full_unstemmed Photoconduction Properties in Tungsten Disulfide Nanostructures
title_short Photoconduction Properties in Tungsten Disulfide Nanostructures
title_sort photoconduction properties in tungsten disulfide nanostructures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421469/
https://www.ncbi.nlm.nih.gov/pubmed/37570508
http://dx.doi.org/10.3390/nano13152190
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