dc.contributor.authorHan, Yong
dc.contributor.authorLau, Boon Long
dc.contributor.authorZhang, Xiaowu
dc.contributor.authorLeong, Yoke Choy
dc.contributor.authorChoo, Kok Fah
dc.identifier.citationHan, Y., Lau, B. L., Zhang, X., Leong, Y. C., & Choo, K. F. (2014). Enhancement of Hotspot Cooling With Diamond Heat Spreader on Cu Microchannel Heat Sink for GaN-on-Si Device. IEEE Transactions on Components, Packaging and Manufacturing Technology, 4(6), 983-990.en_US
dc.description.abstractThe diamond heat spreader has been directly attached between the test chip and the Cu microchannel heat sink for thermal performance enhancement of the GaN-on-Si device. In the fabricated test vehicle, the small heater is used to represent one unit of transistor. Experimental tests have been conducted on the fabricated test vehicle to investigate the performance. Two types of simulation models have been constructed in COMSOL, considering the multiphysics features and temperature-dependent material properties. The submodel in conjunction with the main model is constructed to predict the thermal performance of the GaN-on-Si structure. The heating power, which is concentrated on eight tiny heaters of size 350 × 150 μm2, is varied from 10 to 50 W. With the diamond heat spreader attached to the liquidcooled microchannel heat sink, the maximum heater temperature can be reduced by 11.5%-22.9%, while the maximum gate temperature can be reduced by 8.9%-18.5%. Consistent results from the experimental and simulation studies have verified the enhancement of the hotspot cooling capability using directly attached diamond heat spreader.en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en_US
dc.format.extent16 p.en_US
dc.relation.ispartofseriesIEEE Transactions on Components, Packaging and Manufacturing Technologyen_US
dc.rights© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/TCPMT.2014.2315234].en_US
dc.subjectHeat sinksen_US
dc.subjectLogic gatesen_US
dc.titleEnhancement of Hotspot Cooling With Diamond Heat Spreader on Cu Microchannel Heat Sink for GaN-on-Si Deviceen_US
dc.typeJournal Article
dc.contributor.researchTemasek Laboratoriesen_US
dc.description.versionAccepted versionen_US

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