Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices

In this study, blue perovskite quantum dots (PQDs) were prepared using didodecyldimethylammonium bromide (DDAB), which can passivate surface defects caused by the loss of surface ligands and reduce particle size distribution. After the passivation of DDAB, blue CsPbCl(x)Br(3−x) PQDs dispersed in n-o...

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Autores principales: Hung, Wei-Kuan, Tseng, Yi-Hsun, Lin, Chun-Cheng, Chen, Sih-An, Hsu, Chih-Hung, Li, Chen-Feng, Chen, Yen-Ju, Tseng, Zong-Liang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693500/
https://www.ncbi.nlm.nih.gov/pubmed/36432243
http://dx.doi.org/10.3390/nano12223957
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author Hung, Wei-Kuan
Tseng, Yi-Hsun
Lin, Chun-Cheng
Chen, Sih-An
Hsu, Chih-Hung
Li, Chen-Feng
Chen, Yen-Ju
Tseng, Zong-Liang
author_facet Hung, Wei-Kuan
Tseng, Yi-Hsun
Lin, Chun-Cheng
Chen, Sih-An
Hsu, Chih-Hung
Li, Chen-Feng
Chen, Yen-Ju
Tseng, Zong-Liang
author_sort Hung, Wei-Kuan
collection PubMed
description In this study, blue perovskite quantum dots (PQDs) were prepared using didodecyldimethylammonium bromide (DDAB), which can passivate surface defects caused by the loss of surface ligands and reduce particle size distribution. After the passivation of DDAB, blue CsPbCl(x)Br(3−x) PQDs dispersed in n-octane produced a more compact and uniform PQD thin film than the non-passivated ones. The resulting device showed a stabile lifetime, and an EL peak of 470 nm and a maximum EQE of 1.63% were obtained at an operating voltage of 2.6 V and a current density of 0.34 mA/cm(2). This work aims to provide a simple method to prepare blue-emitting PQDs and high-performance PQD-based light-emitting devices.
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spelling pubmed-96935002022-11-26 Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices Hung, Wei-Kuan Tseng, Yi-Hsun Lin, Chun-Cheng Chen, Sih-An Hsu, Chih-Hung Li, Chen-Feng Chen, Yen-Ju Tseng, Zong-Liang Nanomaterials (Basel) Communication In this study, blue perovskite quantum dots (PQDs) were prepared using didodecyldimethylammonium bromide (DDAB), which can passivate surface defects caused by the loss of surface ligands and reduce particle size distribution. After the passivation of DDAB, blue CsPbCl(x)Br(3−x) PQDs dispersed in n-octane produced a more compact and uniform PQD thin film than the non-passivated ones. The resulting device showed a stabile lifetime, and an EL peak of 470 nm and a maximum EQE of 1.63% were obtained at an operating voltage of 2.6 V and a current density of 0.34 mA/cm(2). This work aims to provide a simple method to prepare blue-emitting PQDs and high-performance PQD-based light-emitting devices. MDPI 2022-11-10 /pmc/articles/PMC9693500/ /pubmed/36432243 http://dx.doi.org/10.3390/nano12223957 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 Communication
Hung, Wei-Kuan
Tseng, Yi-Hsun
Lin, Chun-Cheng
Chen, Sih-An
Hsu, Chih-Hung
Li, Chen-Feng
Chen, Yen-Ju
Tseng, Zong-Liang
Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices
title Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices
title_full Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices
title_fullStr Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices
title_full_unstemmed Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices
title_short Anion-Exchange Blue Perovskite Quantum Dots for Efficient Light-Emitting Devices
title_sort anion-exchange blue perovskite quantum dots for efficient light-emitting devices
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693500/
https://www.ncbi.nlm.nih.gov/pubmed/36432243
http://dx.doi.org/10.3390/nano12223957
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