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Engineering Commons

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Electrical and Computer Engineering

Electrical and Computer Engineering Publications

2003

LOW-FREQUENCY NOISE; EFFECT TRANSISTORS; HOT-ELECTRONS; TEMPERATURE; HETEROSTRUCTURES; LAYERS; FILMS; MBE

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Full-Text Articles in Engineering

Electric-Field-Induced Heating And Energy Relaxation In Gan, T. A. Eckhause, Ö. Süzer, Ç. Kurdak, F. Yun, Hadis Morkoç Jan 2003

Electric-Field-Induced Heating And Energy Relaxation In Gan, T. A. Eckhause, Ö. Süzer, Ç. Kurdak, F. Yun, Hadis Morkoç

Electrical and Computer Engineering Publications

Electric-field-induced heating is studied using noise measurements in n-type GaN grown on sapphire substrates. The measured electron temperature is found to be an order of magnitude higher than what is expected based on calculations of electron–phonon coupling via acoustic deformation potential scattering processes in GaN. The discrepancy may be explained by a large thermal boundary resistance between the GaN film and the sapphire substrate.