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Inkjet printed uniform quantum dots as color conversion layers for full-color OLED displays

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Abstract

Quantum dots (QDs) have shown great potential for next generation displays owing to their fascinating optoelectronic characteristics. In this work, we present a novel full-color display based on blue organic light emitting diodes (BOLEDs) and patterned red and green QD color conversion layers (CCLs). To enable efficient blue-to-green or blue-to-red photoconversion, micrometer-thick QD films with a uniform surface morphology are obtained by utilizing UV-induced polymerization. The uniform QD layers are directly inkjet printed on red and green color filters to further eliminate the residual blue emissions. Based on this QD-BOLED architecture, a 6.6-inch full-color display with 95% Broadcasting Service Television 2020 (BT.2020) color gamut and wide viewing-angles is successfully demonstrated. The inkjet printing method introduced in this work provides a cost-effective way to extend the applications of QDs for full-color displays.

Graphical abstract: Inkjet printed uniform quantum dots as color conversion layers for full-color OLED displays

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Article information


Submitted
24 Oct 2019
Accepted
13 Dec 2019
First published
18 Dec 2019

Nanoscale, 2020, Advance Article
Article type
Paper

Inkjet printed uniform quantum dots as color conversion layers for full-color OLED displays

Z. Hu, Y. Yin, M. U. Ali, W. Peng, S. Zhang, D. Li, T. Zou, Y. Li, S. Jiao, S. Chen, C. Lee, H. Meng and H. Zhou, Nanoscale, 2020, Advance Article , DOI: 10.1039/C9NR09086J

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