Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots

Two-dimensional (2D) transition-metal dichalcogenides (TMDCs) quantum dots (QDs) are the vanguard due to their unique properties. In this work, WSe(2) QDs were fabricated via one step ultrasonic probe sonication. Excitation wavelength dependent photoluminescence (PL) is observed from WSe(2) QDs. Roo...

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Autores principales: Ren, Pengpeng, Zhang, Wenfei, Ni, Yiqun, Xiao, Di, Wan, Honghao, Peng, Ya-Pei, Li, Ling, Yan, Peiguang, Ruan, Shuangchen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6070907/
https://www.ncbi.nlm.nih.gov/pubmed/30018255
http://dx.doi.org/10.3390/nano8070538
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author Ren, Pengpeng
Zhang, Wenfei
Ni, Yiqun
Xiao, Di
Wan, Honghao
Peng, Ya-Pei
Li, Ling
Yan, Peiguang
Ruan, Shuangchen
author_facet Ren, Pengpeng
Zhang, Wenfei
Ni, Yiqun
Xiao, Di
Wan, Honghao
Peng, Ya-Pei
Li, Ling
Yan, Peiguang
Ruan, Shuangchen
author_sort Ren, Pengpeng
collection PubMed
description Two-dimensional (2D) transition-metal dichalcogenides (TMDCs) quantum dots (QDs) are the vanguard due to their unique properties. In this work, WSe(2) QDs were fabricated via one step ultrasonic probe sonication. Excitation wavelength dependent photoluminescence (PL) is observed from WSe(2) QDs. Room-temperature lasing emission which benefits from 3.7 times enhancement of PL intensity by thermal treatment at ~470 nm was achieved with an excitation threshold value of ~3.5 kW/cm(2) in a Fabry–Perot laser cavity. To the best of our knowledge, this is the first demonstration of lasing emission from TMDCs QDs. This indicates that TMDCs QDs are a superior candidate as a new type of laser gain medium.
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spelling pubmed-60709072018-08-09 Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots Ren, Pengpeng Zhang, Wenfei Ni, Yiqun Xiao, Di Wan, Honghao Peng, Ya-Pei Li, Ling Yan, Peiguang Ruan, Shuangchen Nanomaterials (Basel) Article Two-dimensional (2D) transition-metal dichalcogenides (TMDCs) quantum dots (QDs) are the vanguard due to their unique properties. In this work, WSe(2) QDs were fabricated via one step ultrasonic probe sonication. Excitation wavelength dependent photoluminescence (PL) is observed from WSe(2) QDs. Room-temperature lasing emission which benefits from 3.7 times enhancement of PL intensity by thermal treatment at ~470 nm was achieved with an excitation threshold value of ~3.5 kW/cm(2) in a Fabry–Perot laser cavity. To the best of our knowledge, this is the first demonstration of lasing emission from TMDCs QDs. This indicates that TMDCs QDs are a superior candidate as a new type of laser gain medium. MDPI 2018-07-17 /pmc/articles/PMC6070907/ /pubmed/30018255 http://dx.doi.org/10.3390/nano8070538 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ren, Pengpeng
Zhang, Wenfei
Ni, Yiqun
Xiao, Di
Wan, Honghao
Peng, Ya-Pei
Li, Ling
Yan, Peiguang
Ruan, Shuangchen
Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots
title Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots
title_full Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots
title_fullStr Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots
title_full_unstemmed Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots
title_short Realization of Lasing Emission from One Step Fabricated WSe(2) Quantum Dots
title_sort realization of lasing emission from one step fabricated wse(2) quantum dots
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6070907/
https://www.ncbi.nlm.nih.gov/pubmed/30018255
http://dx.doi.org/10.3390/nano8070538
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