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Additive-Stabilized Emission Centers for Blue Perovskite Light-Emitting Diodes.
Zou, Shibing; Fan, Kezhou; Liu, Zidan; Yuan, Ligang; Yin, Qixin; Bai, Jinke; Wang, Jiarong; Li, Jiong; Yang, Min; Wei, Jianwu; Wu, Liqin; Xu, Shuang; Xue, Qifan; Xie, Jiangsheng; Wong, Kam Sing; Xu, Jianbin; Yan, Keyou.
Afiliação
  • Zou S; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Fan K; Department of Physics and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, P. R. China.
  • Liu Z; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Yuan L; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Yin Q; School of Materials, Sun Yat-sen University, Guangzhou 510275 P. R. China.
  • Bai J; Department of Physics, Harbin Institute of Technology, Harbin 150001, P. R. China.
  • Wang J; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Li J; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Yang M; School of optics and photonics, Beijing Institute of Technology, Beijing 100081, P. R. China.
  • Wei J; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Wu L; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Xu S; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Xue Q; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
  • Xie J; School of Materials, Sun Yat-sen University, Guangzhou 510275 P. R. China.
  • Wong KS; Department of Physics and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, P. R. China.
  • Xu J; Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, 999077 Hong Kong, P. R. China.
  • Yan K; School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, P. R. China.
ACS Appl Mater Interfaces ; 15(22): 26778-26786, 2023 Jun 07.
Article em En | MEDLINE | ID: mdl-37219503
ABSTRACT
The performance of the blue perovskite light-emitting diodes (PeLEDs) is limited by the low photoluminescence quantum yields (PLQYs) and the unstable emission centers. In this work, we incorporate sodium bromide and acesulfame potassium into a quasi-2D perovskite to control the dimension distribution and promote the PLQYs. Benefiting from the efficient energy cascade channel and passivation, the sky-blue PeLED has an external quantum efficiency of 9.7% and no shift of the electroluminescence center under operation voltages from 4 to 8 V. Moreover, the half lifetime of the devices reaches 325 s, 3.3 times that of control devices without additives. This work provides new insights into enhancing the performance of blue PeLEDs.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article