High brightness III-V light-emitting diodes on diamond/silicon composite substrate

Tai Min Chang, Jen Li Hu, Bo Wen Lin, Yew-Chuhg Wu

Research output: Contribution to journalArticlepeer-review


Thermal management of LED is currently an important issue because the increase of junction temperature degrades LED's performance and reliability. Replace that substrate to high thermal conductivity substrate can improved this problem. Diamond has the highest thermal conductivity (~2000W/mK) in all material but is hard to process and has low reactivity with other material. In this study, high-brightness ?-? light-emitting diodes on Si/diamond composite substrate can be fabricate by filled diamond particle into the blind-hole of the silicon substrate, wafer-bonding and lift-off process. In order to confirm that diamond particle provided a direct thermal path for heat dissipation, a simple sandwich structure was also been done.

Original languageEnglish
Pages (from-to)33-37
Number of pages5
JournalECS Transactions
Issue number42
StatePublished - 1 Dec 2012


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