期刊
NANOSCALE AND MICROSCALE THERMOPHYSICAL ENGINEERING
卷 20, 期 1, 页码 22-32出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15567265.2016.1154630
关键词
Gallium nitride
类别
资金
- National Science Foundation under IGERT [DGE-1069138]
In this work, we investigate the thermal boundary resistance and thermal conductivity of GaN layers grown on Si with 100 nm AlN transition layers using time domain thermoreflectance (TDTR). The GaN layers ranged from 0.31 to 1.27 mu m. Due to the challenges in determining the thermal boundary resistance of the buried interfaces found in this architecture, a new data reduction scheme for TDTR that utilizes a Monte Carlo fitting method is introduced and found to dramatically reduce the uncertainty in certain model parameters. The results show that the GaN thermal conductivity does not change significantly with layer thickness, whereas the resistance of the AlN layer decreases slightly with GaN thickness.
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