Two-color patterned display of perovskite thin films by laser direct writing technology

Teng Ma; Weishu Guo; Lumeng Liang; Jinning Hu; Ziyi Chen; Yucong Ji; Jian Lu; Haibo Zeng; Zhenhua Li; Jun Chen

doi:10.1117/12.3005503

24 November 2023 Two-color patterned display of perovskite thin films by laser direct writing technology

Teng Ma, Weishu Guo, Lumeng Liang, Jinning Hu, Ziyi Chen, Yucong Ji, Jian Lu, Haibo Zeng, Zhenhua Li, Jun Chen

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 1293513 (2023) https://doi.org/10.1117/12.3005503
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Full-color display has always been a research focus and technical difficulty in the field of display. One of the current research hotspots is the use of color conversion layer (CCL) technology to achieve full-color display. Ultraviolet or blue LEDs can be converted by CCL to achieve full-color pixel display. Compared with traditional technologies, this technology does not require steps such as mass transfer. This method greatly simplifies the processing of full-color display. In this paper, we propose a method to achieve two-color patterned display of perovskite thin films by laser direct writing technology. The laser acts on the perovskite quantum dot thin film covered by the polymer film to form pattern or array based on photo-quench. Then other color perovskite quantum dot solutions is spin-coated. At last, the upper quantum dot film is washed off with solvent. Due to the protective effect of the polymer film, the coexistence of two-color quantum dots is realized. This method not only broadens the application of quantum dots in display, but also provides a new idea for the subsequent laser direct writing technology to realize multi-color or even full-color display.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Teng Ma, Weishu Guo, Lumeng Liang, Jinning Hu, Ziyi Chen, Yucong Ji, Jian Lu, Haibo Zeng, Zhenhua Li, and Jun Chen "Two-color patterned display of perovskite thin films by laser direct writing technology", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 1293513 (24 November 2023); https://doi.org/10.1117/12.3005503

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KEYWORDS

Quantum dots

Perovskite

Laser applications

Laser processing

Thin films

Luminescence

Ultraviolet radiation

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