Laser-induced inverted patterning of nanocrystals embedded glass for micro-light-emitting diodes

doi:10.1016/j.jmst.2022.11.055

Abstract

Abstract: High resolution and full-color light-emitting diodes require precise and efficient patterning of light-emitting structures containing quantum dots or nanocrystals. We report light-induced inverted patterning of nanocrystals in glasses for micro-light-emitting diodes. Ultrafast laser pulse induces structural destruction and amorphization of nanocrystals in glasses, forming inverted luminescent patterns. High-throughput patterning of micrometer-scale, thermally stable, and highly photoluminescent structures in nanocrystals embedded glass is realized. This patterning method provides a novel way to fabricate high-performance and ultrahigh-resolution color conversion layers for micrometer-scale light-emitting diodes.

Key words: Nanocrystals, Ultrafast laser, Sub-micro patterning, Micro-light-emitting-diodes

Yuzhou Hu, Ying Ye, Wenchao Zhang, Kai Li, Yao Zhou, Yudong Zhang, Zhao Deng, Jianjun Han, Xiujian Zhao, Chao Liu. Laser-induced inverted patterning of nanocrystals embedded glass for micro-light-emitting diodes[J]. J. Mater. Sci. Technol., 2023, 150: 138-144.

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