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A simple method to improve the performance of perovskite light-emitting diodes via layer-by-layer spin-coating CsPbBr₃ quantum dots.

ABSTRACT: 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 CsPbBr₃ 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 CsPbBr₃ 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.

SUBMITTER: Li B

PROVIDER: S-EPMC9083367 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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A simple method to improve the performance of perovskite light-emitting diodes via layer-by-layer spin-coating CsPbBr3 quantum dots.

Li Bobo B Li Xiaomeng X Li Xia X Liu Haolin H Li Zhaonan Z Xiang Guohong G Liu Yuhan Y Zhou Taojie T Fang Xuan X Zhang Zhaoyu Z

RSC advances 20180731 48

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 CsPbBr3 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 CsPbBr3 multilayers to balance charge transportat ...[more]

PMID: 35539984

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