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Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor

Purely organic room‐temperature phosphorescence (RTP) materials generally exhibit low phosphorescence quantum yield (ϕ (P)) and long phosphorescence lifetime (τ (P)) due to the theoretically spin‐forbidden triplet state. Herein, by introducing a donor–acceptor (D–A) skeleton with a phenoxaselenine d...

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Autores principales: Chen, Zijian, Li, Mengke, Gu, Qing, Peng, Xiaomei, Qiu, Weidong, Xie, Wentao, Liu, Denghui, Jiao, Yihang, Liu, Kunkun, Zhou, Jiadong, Su, Shi‐Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10131844/
https://www.ncbi.nlm.nih.gov/pubmed/36806703
http://dx.doi.org/10.1002/advs.202207003
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author Chen, Zijian
Li, Mengke
Gu, Qing
Peng, Xiaomei
Qiu, Weidong
Xie, Wentao
Liu, Denghui
Jiao, Yihang
Liu, Kunkun
Zhou, Jiadong
Su, Shi‐Jian
author_facet Chen, Zijian
Li, Mengke
Gu, Qing
Peng, Xiaomei
Qiu, Weidong
Xie, Wentao
Liu, Denghui
Jiao, Yihang
Liu, Kunkun
Zhou, Jiadong
Su, Shi‐Jian
author_sort Chen, Zijian
collection PubMed
description Purely organic room‐temperature phosphorescence (RTP) materials generally exhibit low phosphorescence quantum yield (ϕ (P)) and long phosphorescence lifetime (τ (P)) due to the theoretically spin‐forbidden triplet state. Herein, by introducing a donor–acceptor (D–A) skeleton with a phenoxaselenine donor, three nonaromatic amine donor containing compounds with high ϕ (P) and short τ (P) in amorphous films are developed. Besides the enhanced spin–orbit coupling (SOC) by the heavy‐atom effect of selenium, the D–A skeleton which facilitates orbital angular momentum change can further boost SOC, and severe nonradiative energy dissipation is also suppressed by the rigid molecular structure. Consequently, a record‐high external quantum efficiency of 19.5% are achieved for the RTP organic light‐emitting diode (OLED) based on 2‐(phenoxaselenin‐3‐yl)‐4,6‐diphenyl‐1,3,5‐triazine (PXSeDRZ). Moreover, voltage‐dependent color‐tunable emission and single‐molecule white emission are also realized. These results shed light on the broad prospects of purely organic phosphorescence materials as highly efficient OLED emitters especially for potential charming lighting applications.
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spelling pubmed-101318442023-04-27 Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor Chen, Zijian Li, Mengke Gu, Qing Peng, Xiaomei Qiu, Weidong Xie, Wentao Liu, Denghui Jiao, Yihang Liu, Kunkun Zhou, Jiadong Su, Shi‐Jian Adv Sci (Weinh) Research Articles Purely organic room‐temperature phosphorescence (RTP) materials generally exhibit low phosphorescence quantum yield (ϕ (P)) and long phosphorescence lifetime (τ (P)) due to the theoretically spin‐forbidden triplet state. Herein, by introducing a donor–acceptor (D–A) skeleton with a phenoxaselenine donor, three nonaromatic amine donor containing compounds with high ϕ (P) and short τ (P) in amorphous films are developed. Besides the enhanced spin–orbit coupling (SOC) by the heavy‐atom effect of selenium, the D–A skeleton which facilitates orbital angular momentum change can further boost SOC, and severe nonradiative energy dissipation is also suppressed by the rigid molecular structure. Consequently, a record‐high external quantum efficiency of 19.5% are achieved for the RTP organic light‐emitting diode (OLED) based on 2‐(phenoxaselenin‐3‐yl)‐4,6‐diphenyl‐1,3,5‐triazine (PXSeDRZ). Moreover, voltage‐dependent color‐tunable emission and single‐molecule white emission are also realized. These results shed light on the broad prospects of purely organic phosphorescence materials as highly efficient OLED emitters especially for potential charming lighting applications. John Wiley and Sons Inc. 2023-02-20 /pmc/articles/PMC10131844/ /pubmed/36806703 http://dx.doi.org/10.1002/advs.202207003 Text en © 2023 The Authors. Advanced Science published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Chen, Zijian
Li, Mengke
Gu, Qing
Peng, Xiaomei
Qiu, Weidong
Xie, Wentao
Liu, Denghui
Jiao, Yihang
Liu, Kunkun
Zhou, Jiadong
Su, Shi‐Jian
Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
title Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
title_full Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
title_fullStr Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
title_full_unstemmed Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
title_short Highly Efficient Purely Organic Phosphorescence Light‐Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
title_sort highly efficient purely organic phosphorescence light‐emitting diodes employing a donor–acceptor skeleton with a phenoxaselenine donor
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10131844/
https://www.ncbi.nlm.nih.gov/pubmed/36806703
http://dx.doi.org/10.1002/advs.202207003
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