On the temperature and carrier density dependence of electron saturation velocity in an AlGaN/GaN HEMT

C. H. Oxley, Michael J. Uren, A. J. Coates, D.G. Hayes

IEEE Transactions on Electron Devices · 2006 · 69 citations · 12 references

Concepts

Abstract

The temperature and carrier density dependence of electron intrinsic saturation velocity (v/sub si/) in a 0.3-/spl mu/m gate length AlGaN/GaN HEMT was extracted from multibias S-parameter measurements. It was found that v/sub si/ fell rapidly with increasing sheet carrier concentration (n/sub s/), but was only a very weak function of ambient temperature (T/sub amb/). This behavior is consistent with the hot-phonon model of carrier transport.

References

12