Abstract
Self-heating effects in a molecular beam epitaxy-grown GaN/AlGaN/GaN structure on a single crystalline diamond is investigated. A transient interferometric method, in combination with a three dimensional model, is used to describe a pulsed operation of a transistor-like heater, and a micro-Raman technique is used in a steady state. Good agreement is found between the techniques. The thermal conductivity of the diamond is found to be 2200 W/m K, and the thermal boundary resistance to the III-N epi-structure is < 1 × 10−8 m2 K/W. The excellent cooling efficiency of the diamond is manifested by the fast saturation of the temperature at 1 μs and by a record low normalized thermal resistance of 3.5 K mm/W.
References
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Dates
Type | When |
---|---|
Created | 14 years, 3 months ago (April 27, 2011, 6:55 p.m.) |
Deposited | 2 years ago (Aug. 1, 2023, 9:31 p.m.) |
Indexed | 3 weeks, 1 day ago (July 30, 2025, 6:56 a.m.) |
Issued | 14 years, 4 months ago (April 15, 2011) |
Published | 14 years, 4 months ago (April 15, 2011) |
Published Online | 14 years, 3 months ago (April 27, 2011) |
Published Print | 14 years, 4 months ago (April 15, 2011) |
@article{Kuzmik_2011, title={Thermal characterization of MBE-grown GaN/AlGaN/GaN device on single crystalline diamond}, volume={109}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.3581032}, DOI={10.1063/1.3581032}, number={8}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Kuzmik, J. and Bychikhin, S. and Pogany, D. and Pichonat, E. and Lancry, O. and Gaquière, C. and Tsiakatouras, G. and Deligeorgis, G. and Georgakilas, A.}, year={2011}, month=apr }