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

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, https://doi.org/10.1002/adfm.202215032

• Journal Article Type: Article
• Acceptance Date: Feb 10, 2023
• Online Publication Date: Feb 12, 2023
• Publication Date: Feb 12, 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
• 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.