High performance micromachined GaN on Si HEMT with backside diamondlke-carbon/titanium heat dissipation layer

Hsien Chin Chiu, Chih Wei Yang, Hsiang Chun Wang, Ming Chi Kan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work, a thermally stable air-bridged matrix (ABM) AlGaN/GaN high electron mobility transistor (HEMT) with micromachined diamondlke carbon (DLC)/Titanium thermal-distributed layers was demonstrated. After removing the Si substrate beneath the HEMT, the DLC/Ti heat dissipation layers were deposited on the backside of the HEMT, and a significant breakdown voltage improvement was observed. The drain and source terminals were arranged as the matrix type. Compared to the traditional multi-fingers HEMT, the current density was doubled. In addition, the self-heating phenomenon of power cell was also suppressed by the backside DLC/Ti heat dissipation layer.

Original languageEnglish
Title of host publicationProceedings of the 26th International Symposium on Power Semiconductor Devices and ICs, ISPSD 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages229-232
Number of pages4
ISBN (Print)9781479929177
DOIs
StatePublished - 2014
Event26th International Symposium on Power Semiconductor Devices and ICs, ISPSD 2014 - Waikoloa, HI, United States
Duration: 15 06 201419 06 2014

Publication series

NameProceedings of the International Symposium on Power Semiconductor Devices and ICs
ISSN (Print)1063-6854

Conference

Conference26th International Symposium on Power Semiconductor Devices and ICs, ISPSD 2014
Country/TerritoryUnited States
CityWaikoloa, HI
Period15/06/1419/06/14

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