Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping

We determine the influence of substitutional defects on perovskite quantum dots through experimental and theoretical investigations. Substitutional defects were introduced by trivalent dopants (In, Sb, and Bi) in CsPbBr(3) by ligand-assisted reprecipitation. We show that the photoluminescence (PL) e...

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Detalles Bibliográficos
Autores principales: Jung, Sujeong, Kim, Jae Ho, Choi, Jin Woo, Kang, Jae-Wook, Jin, Sung-Ho, Kang, Youngho, Song, Myungkwan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221998/
https://www.ncbi.nlm.nih.gov/pubmed/32283620
http://dx.doi.org/10.3390/nano10040710
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author Jung, Sujeong
Kim, Jae Ho
Choi, Jin Woo
Kang, Jae-Wook
Jin, Sung-Ho
Kang, Youngho
Song, Myungkwan
author_facet Jung, Sujeong
Kim, Jae Ho
Choi, Jin Woo
Kang, Jae-Wook
Jin, Sung-Ho
Kang, Youngho
Song, Myungkwan
author_sort Jung, Sujeong
collection PubMed
description We determine the influence of substitutional defects on perovskite quantum dots through experimental and theoretical investigations. Substitutional defects were introduced by trivalent dopants (In, Sb, and Bi) in CsPbBr(3) by ligand-assisted reprecipitation. We show that the photoluminescence (PL) emission peak shifts toward shorter wavelengths when doping concentrations are increased. Trivalent metal-doped CsPbBr(3) enhanced the PL quantum yield (~10%) and air stability (over 10 days). Our findings provide new insights into the influence of substitutional defects on substituted CsPbBr(3) that underpin their physical properties.
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spelling pubmed-72219982020-05-22 Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping Jung, Sujeong Kim, Jae Ho Choi, Jin Woo Kang, Jae-Wook Jin, Sung-Ho Kang, Youngho Song, Myungkwan Nanomaterials (Basel) Communication We determine the influence of substitutional defects on perovskite quantum dots through experimental and theoretical investigations. Substitutional defects were introduced by trivalent dopants (In, Sb, and Bi) in CsPbBr(3) by ligand-assisted reprecipitation. We show that the photoluminescence (PL) emission peak shifts toward shorter wavelengths when doping concentrations are increased. Trivalent metal-doped CsPbBr(3) enhanced the PL quantum yield (~10%) and air stability (over 10 days). Our findings provide new insights into the influence of substitutional defects on substituted CsPbBr(3) that underpin their physical properties. MDPI 2020-04-09 /pmc/articles/PMC7221998/ /pubmed/32283620 http://dx.doi.org/10.3390/nano10040710 Text en © 2020 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 Communication
Jung, Sujeong
Kim, Jae Ho
Choi, Jin Woo
Kang, Jae-Wook
Jin, Sung-Ho
Kang, Youngho
Song, Myungkwan
Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping
title Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping
title_full Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping
title_fullStr Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping
title_full_unstemmed Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping
title_short Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr(3) Perovskite Quantum Dots by Trivalent Doping
title_sort enhancement of photoluminescence quantum yield and stability in cspbbr(3) perovskite quantum dots by trivalent doping
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221998/
https://www.ncbi.nlm.nih.gov/pubmed/32283620
http://dx.doi.org/10.3390/nano10040710
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