@inbook{9cb1fa03225b4f889f84f718b655edb9,
title = "Integration of high performance GaN LEDs for communication systems and smart society",
abstract = "In this work, we report on releasing GaN-on-Si LEDs from their original substrate and micro-transfer printing them into miniature reflective cavities with different depths to enhance the forward directed optical power. Results show that the 10 μm-deep cavities can redirect the light effectively, with the collected power increased by 80\% compared to devices transferred on flat surface. With polymeric lenses deposited on the device in the cavity, the power is increased by a further 18\% when compared to those without lenses. Combining all the steps, a total 9-times enhancement in collected light is achieved after transfer printing compared to LEDs on the original substrate. Finally, the capability of the printed LEDs in visible light communication is demonstrated. A higher signal-to-noise ratio and lower bit-error-rate is observed for printed LED into cavity compared with that of on flat target due to higher optical power. The strategy would be also useful for many other applications in miniaturized integration and colour conversion based displays.",
keywords = "GaN LED, Heterogeneous Integration, Micro-transfer Printing, Release, Visible Light Communication",
author = "Zeinab Shaban and Mehrdad Saei and Brian Corbett and Zhi Li",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 72nd IEEE Electronic Components and Technology Conference, ECTC 2022 ; Conference date: 31-05-2022 Through 03-06-2022",
year = "2022",
doi = "10.1109/ECTC51906.2022.00333",
language = "English",
series = "Proceedings - Electronic Components and Technology Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2111--2115",
booktitle = "Proceedings - IEEE 72nd Electronic Components and Technology Conference, ECTC 2022",
address = "United States",
}