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http://hdl.handle.net/10397/4023
| Title: | A thermal model for static current characteristics of AlGaN/GaN high electron mobility transistors including self-heating effect | Authors: | Chang, Y Zhang, Y Zhang, Y Tong, KY |
Issue Date: | 15-Feb-2006 | Source: | Journal of applied physics, 15 Feb. 2006, v. 99, no. 4, 044501, p. 1-5 | Abstract: | A thermal model of AlGaN/GaN high electron mobility transistors HEMTs has been developed based on a quasi-two-dimensional numerical solution of Schrödinger’s equation coupled with Poisson’s equation. The static current characteristics of HEMT devices have been obtained with the consideration of the self-heating effect on related parameters including polarization, electron mobility, saturation velocity, thermal conductivity, drain and source resistance, and conduction-band discontinuity at the interface between AlGaN and GaN. The simulation results agree well with our experimental data. It has also been demonstrated that the reduction of the saturation drain current at high power dissipation is primarily due to the decrease of electron mobility in the channel. The proposed model is valuable for predicting and evaluating the performance of different device structures and packages for various applications. | Keywords: | Aluminium compounds Gallium compounds III-V semiconductors Wide band gap semiconductors High electron mobility transistors Schrodinger equation Poisson equation Thermal conductivity Conduction bands Electrical resistivity Electron mobility Semiconductor device models |
Publisher: | American Institute of Physics | Journal: | Journal of applied physics | ISSN: | 0021-8979 | EISSN: | 1089-7550 | DOI: | 10.1063/1.2171776 | Rights: | © 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Y. Chang et al., J. Appl. Phys. 99, 044501 (2006) and may be found at http://link.aip.org/link/?jap/99/044501. |
| Appears in Collections: | Journal/Magazine Article |
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| Chang_Thermal_model_static.pdf | 85.61 kB | Adobe PDF | View/Open |
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