A simple method to improve the performance of perovskite light-emitting diodes via layer-by-layer spin-coating CsPbBr(3) quantum dots

Recently, all-inorganic halide perovskite quantum dots have become a very promising material for light-emitting diodes. Herein, we demonstrate a facile method, namely, layer-by-layer spin-coating of CsPbBr(3) QDs to improve device performance. After optimization of the number of emissive layers, the...

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Detalles Bibliográficos
Autores principales: Li, Bobo, Li, Xiaomeng, Li, Xia, Liu, Haolin, Li, Zhaonan, Xiang, Guohong, Liu, Yuhan, Zhou, Taojie, Fang, Xuan, Zhang, Zhaoyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9083367/
https://www.ncbi.nlm.nih.gov/pubmed/35539984
http://dx.doi.org/10.1039/c8ra05104f
Descripción
Sumario:Recently, all-inorganic halide perovskite quantum dots have become a very promising material for light-emitting diodes. Herein, we demonstrate a facile method, namely, layer-by-layer spin-coating of CsPbBr(3) QDs to improve device performance. After optimization of the number of emissive layers, the maximum EQE can be increased from an initial value of 0.69% to 2.31%. Additionally, we inserted a CBP layer between PEDOT:PSS and CsPbBr(3) multilayers to balance charge transportation and recombination. As a result, a 37% improvement in EQE (up to 3.16%) and highest luminance of 2629 cd m(−2) are obtained.

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