A deterministic solver for the transport of the AlGaN/GaN 2D electron gas including hot-phonon and degeneracy effects |
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Authors: | M Galler F Schürrer |
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Institution: | Institute of Theoretical and Computational Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria |
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Abstract: | The transport of the two-dimensional electron gas formed at an AlGaN/GaN heterostructure in the presence of strain polarization fields is investigated. For this purpose, we develop a deterministic multigroup model to the Boltzmann transport equations. The envelope wave functions for the confined electrons are calculated using a self-consistent Poisson–Schrödinger solver. The electron gas degeneracy and hot phonons are included in our transport equations. Numerical results are given for the dependence of macroscopic quantities on the electric field strength and on time and for the electron and phonon distribution functions. We compare our results to those of Monte Carlo simulations and with experiments. |
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Keywords: | 2DEG AlGaN/GaN heterostructure Multigroup model Hot phonon effects |
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