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CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion
Colloidal cesium lead halide (CsPbX(3), X = Cl, Br, and I) perovskite nanocrystals (NCs) demonstrate supreme optical properties in the spectra region of infrared, red, and green. High-performance blue-emitting counterparts are still eagerly required for next-generation full-color displays. However,...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231175/ https://www.ncbi.nlm.nih.gov/pubmed/35745367 http://dx.doi.org/10.3390/nano12122026 |
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author | Zhang, Weizhuo Li, Xin Peng, Chencheng Yang, Fei Lian, Linyuan Guo, Runda Zhang, Jianbing Wang, Lei |
author_facet | Zhang, Weizhuo Li, Xin Peng, Chencheng Yang, Fei Lian, Linyuan Guo, Runda Zhang, Jianbing Wang, Lei |
author_sort | Zhang, Weizhuo |
collection | PubMed |
description | Colloidal cesium lead halide (CsPbX(3), X = Cl, Br, and I) perovskite nanocrystals (NCs) demonstrate supreme optical properties in the spectra region of infrared, red, and green. High-performance blue-emitting counterparts are still eagerly required for next-generation full-color displays. However, it is challenging to obtain efficient blue perovskite NCs, especially in a deep blue region with an emission wavelength of around 460 nm or shorter. Herein, calcium halide and ammonium ions are applied simultaneously to modify the CsPb(Br/Cl)(3) NCs in situ to reduce surface defects, finally remarkably enhancing the photoluminescence quantum yield (PLQY) from 13% to 93% with an emission peak at 455 nm and the Commission Internationale de l’Eclairage (CIE) coordinates at (0.147, 0.030), which is close to the requirement of the Rec.2020 standard and also meets the requirement of blue emission in DCI-P3. Bright white emission and a wide color gamut are also achieved by combining the commercial red-emitting and green-emitting phosphors. The combination of time-resolved PL spectra and femtosecond transient absorption results discloses the reason for PLQY improvement as suppressing the nonradiative recombination. |
format | Online Article Text |
id | pubmed-9231175 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92311752022-06-25 CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion Zhang, Weizhuo Li, Xin Peng, Chencheng Yang, Fei Lian, Linyuan Guo, Runda Zhang, Jianbing Wang, Lei Nanomaterials (Basel) Article Colloidal cesium lead halide (CsPbX(3), X = Cl, Br, and I) perovskite nanocrystals (NCs) demonstrate supreme optical properties in the spectra region of infrared, red, and green. High-performance blue-emitting counterparts are still eagerly required for next-generation full-color displays. However, it is challenging to obtain efficient blue perovskite NCs, especially in a deep blue region with an emission wavelength of around 460 nm or shorter. Herein, calcium halide and ammonium ions are applied simultaneously to modify the CsPb(Br/Cl)(3) NCs in situ to reduce surface defects, finally remarkably enhancing the photoluminescence quantum yield (PLQY) from 13% to 93% with an emission peak at 455 nm and the Commission Internationale de l’Eclairage (CIE) coordinates at (0.147, 0.030), which is close to the requirement of the Rec.2020 standard and also meets the requirement of blue emission in DCI-P3. Bright white emission and a wide color gamut are also achieved by combining the commercial red-emitting and green-emitting phosphors. The combination of time-resolved PL spectra and femtosecond transient absorption results discloses the reason for PLQY improvement as suppressing the nonradiative recombination. MDPI 2022-06-13 /pmc/articles/PMC9231175/ /pubmed/35745367 http://dx.doi.org/10.3390/nano12122026 Text en © 2022 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 Zhang, Weizhuo Li, Xin Peng, Chencheng Yang, Fei Lian, Linyuan Guo, Runda Zhang, Jianbing Wang, Lei CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion |
title | CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion |
title_full | CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion |
title_fullStr | CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion |
title_full_unstemmed | CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion |
title_short | CsPb(Br/Cl)(3) Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion |
title_sort | cspb(br/cl)(3) perovskite nanocrystals with bright blue emission synergistically modified by calcium halide and ammonium ion |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231175/ https://www.ncbi.nlm.nih.gov/pubmed/35745367 http://dx.doi.org/10.3390/nano12122026 |
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