biostudies-literatureMcGinn CKNINDS NIH HHS2300390https://www.ebi.ac.uk/biostudies/studies/S-EPMC10977661biostudies-literatureUnknown8(19)MicroLEDs provide unrivaled luminance and operating lifetime, which has led to significant activity using devices for display and non-display applications. The small size and high power density of microLEDs, however, causes increased adverse heating effects which can limit performance. A new generation of electrically insulating high thermal conductivity materials, such as alumina, has been proposed to mitigate these thermal effects when used as a substrate as an alternative to glass. This strategy then could be used as a method of passive heatsinking to improve the overall performance of the microLED. In this work, a newly available material, an 80 micron thick alumina ceramic substrate, is shown to yield a 30 % improvement on average in the maximum current drive over a glass substrate.Advanced materials technologiesUltra-Thin Ceramic Substrates for Improved Heatsinking for microLEDs.PMC10977661UF1 NS116241McGinn CKKumar VKymissis ILamport ZNoga MfalseUltra-Thin Ceramic Substrates for Improved Heatsinking for microLEDs.MicroLEDs provide unrivaled luminance and operating lifetime, which has led to significant activity using devices for display and non-display applications. The small size and high power density of microLEDs, however, causes increased adverse heating effects which can limit performance. A new generation of electrically insulating high thermal conductivity materials, such as alumina, has been proposed to mitigate these thermal effects when used as a substrate as an alternative to glass. This strategy then could be used as a method of passive heatsinking to improve the overall performance of the microLED. In this work, a newly available material, an 80 micron thick alumina ceramic substrate, is shown to yield a 30 % improvement on average in the maximum current drive over a glass substrate.2023-01-01T00:00:00Z2023 Oct2025-04-18T15:57:27.724Z2025-04-07T02:55:19.165ZS-EPMC109776613855940310.1002/admt.202300390