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Efficient All-Perovskite White Light-Emitting Diodes Made of In Situ Grown Perovskite-Mesoporous Silica Nanocomposites

Fan, Meng; Huang, Jinpeng; Turyanska, Lyudmila; Bian, Zhenfeng; Wang, Liancheng; Xu, Chunyang; Liu, Nan; Li, Hongbo; Zhang, Xiaoyu; Zhang, Chengxi; Yang, Xuyong

Efficient All-Perovskite White Light-Emitting Diodes Made of In Situ Grown Perovskite-Mesoporous Silica Nanocomposites Thumbnail


Authors

Meng Fan

Jinpeng Huang

Zhenfeng Bian

Liancheng Wang

Chunyang Xu

Nan Liu

Hongbo Li

Xiaoyu Zhang

Chengxi Zhang

Xuyong Yang



Abstract

Metal halide perovskite quantum dots (QDs) have emerged as potential materials for high brightness, wide color gamut, and cost-effective backlight emission due to their high photoluminescence quantum yields, narrow emission linewidths, and tunable bandgaps. Herein, CsPbX3/SBA-15 nanocomposites are prepared with outstanding optical properties and high stability through an in situ growth strategy using mesoporous silica particles. According to finite-difference time-domain simulations, the mesoporous structure provides a strong waveguide effect on perovskite QDs and the uniform dispersion suppresses reabsorption losses, improving the overall photoconversion efficiency of perovskite QDs. The as-fabricated perovskite monochromatic light-emitting diode (LED) has a maximum luminous efficiency of 183 lm W−1, which is the highest for monochromatic perovskite LEDs reported to date. A further benefit of this work is that the white devices, which combine the green and red perovskite nanocomposites with commercial blue LED, exhibit a high luminous efficiency of 116 lm W−1 and a wide color gamut (125% for NTSC and 94% for Rec. 2020) with coordinates of (0.33,0.31).

Citation

Fan, M., Huang, J., Turyanska, L., Bian, Z., Wang, L., Xu, C., …Yang, X. (2023). Efficient All-Perovskite White Light-Emitting Diodes Made of In Situ Grown Perovskite-Mesoporous Silica Nanocomposites. Advanced Functional Materials, 33(19), Article 2215032. https://doi.org/10.1002/adfm.202215032

Journal Article Type Article
Acceptance Date Feb 10, 2023
Online Publication Date Feb 12, 2023
Publication Date May 8, 2023
Deposit Date Feb 27, 2023
Publicly Available Date Feb 13, 2024
Journal Advanced Functional Materials
Print ISSN 1616-301X
Electronic ISSN 1616-3028
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 33
Issue 19
Article Number 2215032
DOI https://doi.org/10.1002/adfm.202215032
Keywords Perovskite quantum dots; Reabsorption; Waveguide effect; Luminous efficacy; Light-emitting diodes
Public URL https://nottingham-repository.worktribe.com/output/17665729
Publisher URL https://onlinelibrary.wiley.com/doi/10.1002/adfm.202215032
Additional Information This is the peer reviewed version of the following article: Fan, M., Huang, J., Turyanska, L., Bian, Z., Wang, L., Xu, C., Liu, N., Li, H., Zhang, X., Zhang, C., Yang, X., Efficient All-Perovskite White Light-Emitting Diodes Made of In Situ Grown Perovskite-Mesoporous Silica Nanocomposites. Adv. Funct. Mater. 2023, 2215032, which has been published in final form at https://doi.org/10.1002/adfm.202215032 The article must be linked to Wiley’s version of record on Wiley Online Library.

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