Polar-optical phonon-limited transport in degenerate GaN-based quantum wells - art. no. 245313

A theory of polar-optical phonon-limited electron transport in GaN-based qu antum wells is developed within the Boltzmann equation approach. The linear ized Boltzmann equation is solved for a degenerate two-dimensional electron system using a ladder technique, enabling evaluations of the effective mom entum relaxation time and the low-field electron mobility to be carried out . Variations of the effective momentum relaxation time with the well width, electron energy, lattice temperature, and electron density are explored in these heterostructures. The corresponding mobility is then evaluated and i ts variations with the well width, lattice temperature, and electron densit y displayed. Comparison is made, where appropriate, with the results emergi ng from the application of a low-energy approximation.