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Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution
Mn:CsPbBr(3) PQDs are achieved by hot injection method. As the amount of Mn doping is gradually increased, the photoluminescence (PL) spectra shows a slight blue shift. Mn-doped PQDs exhibit higher quantum efficiency of 83.9% and longer lifetimes of 267 ns. The stability test was performed to assess...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9121214/ https://www.ncbi.nlm.nih.gov/pubmed/35693234 http://dx.doi.org/10.1039/d2ra02165j |
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author | Jiang, Mou-Ce Pan, Chun-Yang |
author_facet | Jiang, Mou-Ce Pan, Chun-Yang |
author_sort | Jiang, Mou-Ce |
collection | PubMed |
description | Mn:CsPbBr(3) PQDs are achieved by hot injection method. As the amount of Mn doping is gradually increased, the photoluminescence (PL) spectra shows a slight blue shift. Mn-doped PQDs exhibit higher quantum efficiency of 83.9% and longer lifetimes of 267 ns. The stability test was performed to assess the susceptibility of the PQDs to polar solutions. It was figured out that although the stabilities of CsPbBr(3) PQDs and Mn-doped PQDs decreased as the polarity of solution increased, Mn-doped PQDs still maintained higher PL intensity than undoped PQD. Notably, 73% PL intensity of Mn:PQDs was maintained which is nearly three times as much as undoped PQDs in water. We found polarity would induce drastic degradation of CsPbBr(3) QDs. The steady-state spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD) verified that CsPbBr(3) QDs tend to aggregate to form larger particles under continuous light soaking. Our work reveals the main origin of instability in CsPbBr(3) QDs and provides reference to engineering such QDs towards optimal device application. |
format | Online Article Text |
id | pubmed-9121214 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-91212142022-06-10 Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution Jiang, Mou-Ce Pan, Chun-Yang RSC Adv Chemistry Mn:CsPbBr(3) PQDs are achieved by hot injection method. As the amount of Mn doping is gradually increased, the photoluminescence (PL) spectra shows a slight blue shift. Mn-doped PQDs exhibit higher quantum efficiency of 83.9% and longer lifetimes of 267 ns. The stability test was performed to assess the susceptibility of the PQDs to polar solutions. It was figured out that although the stabilities of CsPbBr(3) PQDs and Mn-doped PQDs decreased as the polarity of solution increased, Mn-doped PQDs still maintained higher PL intensity than undoped PQD. Notably, 73% PL intensity of Mn:PQDs was maintained which is nearly three times as much as undoped PQDs in water. We found polarity would induce drastic degradation of CsPbBr(3) QDs. The steady-state spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD) verified that CsPbBr(3) QDs tend to aggregate to form larger particles under continuous light soaking. Our work reveals the main origin of instability in CsPbBr(3) QDs and provides reference to engineering such QDs towards optimal device application. The Royal Society of Chemistry 2022-05-20 /pmc/articles/PMC9121214/ /pubmed/35693234 http://dx.doi.org/10.1039/d2ra02165j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Jiang, Mou-Ce Pan, Chun-Yang Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution |
title | Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution |
title_full | Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution |
title_fullStr | Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution |
title_full_unstemmed | Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution |
title_short | Research on the stability of luminescence of CsPbBr(3) and Mn:CsPbBr(3) PQDs in polar solution |
title_sort | research on the stability of luminescence of cspbbr(3) and mn:cspbbr(3) pqds in polar solution |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9121214/ https://www.ncbi.nlm.nih.gov/pubmed/35693234 http://dx.doi.org/10.1039/d2ra02165j |
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