논문 해외 국제전문학술지(SCI급) Optoelectronic system and device integration for quantum-dot light-emitting diode white lighting with computational design framework
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2022-08-03
- 저자명 Chatura Samarakoon, Hyung Woo Choi, Sanghyo Lee, Xiang-Bing Fan, Dong-Wook Shin, Sang Yun Bang, Jeong-Wan Jo, Limeng Ni, Jiajie Yang, Yoonwoo Kim, Sung-Min Jung, Luigi G Occhipinti, Gehan AJ Amaratunga, Jong Min Kim
- 학술지명 Nature Communications
- 발행처명 Nature Publishing Group UK
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 14
- 원문 링크 https://www.nature.com/articles/s41467-022-31853-9
홈페이지논문 초록 (Abstract)
We propose a computational design framework to design the architecture of a white lighting system having multiple pixelated patterns of electric-field-driven quantum dot light-emitting diodes. The quantum dot of the white lighting system has been optimised by a system-level combinatorial colour optimisation process with the Nelder-Mead algorithm used for machine learning. The layout of quantum dot patterns is designed precisely using rigorous device-level charge transport simulation with an electric-field dependent charge injection model. A theoretical maximum of 97% colour rendering index has been achieved with red, green, cyan, and blue quantum dot light-emitting diodes as primary colours. The white lighting system has been fabricated using the transfer printing technique to validate the computational design framework. It exhibits excellent lighting performance of 92% colour rendering index and wide colour temperature variation from 1612 K to 8903 K with only the four pixelated quantum dots as primary.