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Recent advances in solution-processed organic and perovskite nanocrystal light-emitting devices

Polymer Journal volume 54, pages 969–976 (2022)Cite this article

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Abstract

This paper outlines recent progress in various solution-processed fluorescent polymer tandem organic light-emitting diodes (OLEDs), white phosphorescent tandem OLEDs, and perovskite nanocrystal (NC) LEDs. Tandem OLEDs, which comprise multiple light-emitting units stacked in series through a charge-generation layer, have attracted considerable attention for display applications owing to their high efficiencies and long operational lifetimes. In addition, a nine-layered tandem OLED structure is produced by using a solution process, wherein appropriate coating solvents are carefully selected for each layer. In recent years, metal halide perovskite NCs have also been considered promising light-emitting materials owing to their excellent optoelectrical properties. Herein, the perovskite NC surface was modified by reprecipitation and gel permeation chromatography purification processes, which resulted in enhanced optoelectrical and LED performance.

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Acknowledgements

The author would like to thank Prof. Junji Kido, all the members of our lab, and collaborators for their support. The author would also like to express appreciation for a Grant-in-Aid for Scientific Research C (20K05639) from the Japan Society for the Promotion of Science (JSPS), the Strategic International Collaborative Research Program (JPMJSC2111) of the Japan Science and Technology Agency (JST), and the Extensive Support for Young Promising Researchers from the New Energy and Industrial Technology Development Organization (NEDO).

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  1. Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan

    Takayuki Chiba

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Correspondence to Takayuki Chiba.

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Chiba, T. Recent advances in solution-processed organic and perovskite nanocrystal light-emitting devices. Polym J 54, 969–976 (2022). https://doi.org/10.1038/s41428-022-00640-0

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