Large-Area and Efficient Sky-Blue Perovskite Light-Emitting Diodes via Blade-Coating

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 16 vom: 21. Apr., Seite e2108939
1. Verfasser: Chu, Shenglong (VerfasserIn)
Weitere Verfasser: Zhang, Yihan, Xiao, Peng, Chen, Wenjing, Tang, Rongfeng, Shao, Yi, Chen, Tao, Zhang, Xiaoqiang, Liu, Fengguang, Xiao, Zhengguo
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article blade coating crystallization control large-area fabrication metal halide perovskites sky-blue light-emitting diodes
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520 |a Large-area fabrication of perovskite light-emitting diodes (PeLEDs) through mass-production techniques has attracted growing attention due to their potential applications in lighting. Several breakthroughs are made for red/infrared and green emissions. Nevertheless, large-area blue/sky-blue PeLEDs, a requisite color for lighting, have not yet been reported. Here, efficient and large-area sky-blue PeLEDs are fabricated through blade-coating supersaturated precursors. The volume ratio of dimethyl sulfoxide to dimethylformamide is tuned to obtain a supersaturated CsPb(Br0.84 Cl0.16 )3 solution. Blade-coating this supersaturated precursor results in nucleation in the solution phase with much higher nucleation sites, and a faster crystallization rate. The uniform films formed by this approach exhibit smaller grain size, lower trap density, and higher radiative recombination rate. The peak external quantum efficiency of the blade-coated PeLEDs reaches 10.3% with sky-blue emission (489 nm). Benefitting from the robustness of this blade-coating technique, large-area sky-blue PeLEDs with a device area of 28 cm2 are also achieved with uniform emission. This work represents a significant step forward toward flat-panel lighting and full-color display for the PeLEDs 
650 4 |a Journal Article 
650 4 |a blade coating 
650 4 |a crystallization control 
650 4 |a large-area fabrication 
650 4 |a metal halide perovskites 
650 4 |a sky-blue light-emitting diodes 
700 1 |a Zhang, Yihan  |e verfasserin  |4 aut 
700 1 |a Xiao, Peng  |e verfasserin  |4 aut 
700 1 |a Chen, Wenjing  |e verfasserin  |4 aut 
700 1 |a Tang, Rongfeng  |e verfasserin  |4 aut 
700 1 |a Shao, Yi  |e verfasserin  |4 aut 
700 1 |a Chen, Tao  |e verfasserin  |4 aut 
700 1 |a Zhang, Xiaoqiang  |e verfasserin  |4 aut 
700 1 |a Liu, Fengguang  |e verfasserin  |4 aut 
700 1 |a Xiao, Zhengguo  |e verfasserin  |4 aut 
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773 1 8 |g volume:34  |g year:2022  |g number:16  |g day:21  |g month:04  |g pages:e2108939 
856 4 0 |u http://dx.doi.org/10.1002/adma.202108939  |3 Volltext 
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