An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)

The effects of surface passivation on the photoluminescence (PL) properties of CdS nanoparticles oxidized by straightforward H(2)O(2) injection were examined. Compared to pristine cadmium sulfide nanocrystals (quantum efficiency ≅ 0.1%), the surface-passivated CdS nanoparticles showed significantly...

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Detalles Bibliográficos
Autores principales: Lee, Woojin, Kim, Hoechang, Jung, Dae-Ryong, Kim, Jongmin, Nahm, Changwoo, Lee, Junhee, Kang, Suji, Lee, Byungho, Park, Byungwoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2012
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3570443/
https://www.ncbi.nlm.nih.gov/pubmed/23234569
http://dx.doi.org/10.1186/1556-276X-7-672
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author Lee, Woojin
Kim, Hoechang
Jung, Dae-Ryong
Kim, Jongmin
Nahm, Changwoo
Lee, Junhee
Kang, Suji
Lee, Byungho
Park, Byungwoo
author_facet Lee, Woojin
Kim, Hoechang
Jung, Dae-Ryong
Kim, Jongmin
Nahm, Changwoo
Lee, Junhee
Kang, Suji
Lee, Byungho
Park, Byungwoo
author_sort Lee, Woojin
collection PubMed
description The effects of surface passivation on the photoluminescence (PL) properties of CdS nanoparticles oxidized by straightforward H(2)O(2) injection were examined. Compared to pristine cadmium sulfide nanocrystals (quantum efficiency ≅ 0.1%), the surface-passivated CdS nanoparticles showed significantly enhanced luminescence properties (quantum efficiency ≅ 20%). The surface passivation by H(2)O(2) injection was characterized using X-ray photoelectron spectroscopy, X-ray diffraction, and time-resolved PL. The photoluminescence enhancement is due to the two-order increase in the radiative recombination rate by the sulfate passivation layer.
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spelling pubmed-35704432013-02-13 An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2) Lee, Woojin Kim, Hoechang Jung, Dae-Ryong Kim, Jongmin Nahm, Changwoo Lee, Junhee Kang, Suji Lee, Byungho Park, Byungwoo Nanoscale Res Lett Nano Express The effects of surface passivation on the photoluminescence (PL) properties of CdS nanoparticles oxidized by straightforward H(2)O(2) injection were examined. Compared to pristine cadmium sulfide nanocrystals (quantum efficiency ≅ 0.1%), the surface-passivated CdS nanoparticles showed significantly enhanced luminescence properties (quantum efficiency ≅ 20%). The surface passivation by H(2)O(2) injection was characterized using X-ray photoelectron spectroscopy, X-ray diffraction, and time-resolved PL. The photoluminescence enhancement is due to the two-order increase in the radiative recombination rate by the sulfate passivation layer. Springer 2012-12-12 /pmc/articles/PMC3570443/ /pubmed/23234569 http://dx.doi.org/10.1186/1556-276X-7-672 Text en Copyright ©2012 Lee et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Lee, Woojin
Kim, Hoechang
Jung, Dae-Ryong
Kim, Jongmin
Nahm, Changwoo
Lee, Junhee
Kang, Suji
Lee, Byungho
Park, Byungwoo
An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)
title An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)
title_full An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)
title_fullStr An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)
title_full_unstemmed An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)
title_short An effective oxidation approach for luminescence enhancement in CdS quantum dots by H(2)O(2)
title_sort effective oxidation approach for luminescence enhancement in cds quantum dots by h(2)o(2)
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3570443/
https://www.ncbi.nlm.nih.gov/pubmed/23234569
http://dx.doi.org/10.1186/1556-276X-7-672
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