Amplification of space charge waves of millimeter wave range in transversely inhomogeneous n-GaN Films

  title={Amplification of space charge waves of millimeter wave range in transversely inhomogeneous n-GaN Films},
  author={V. V. Grimalsky and S. V. Koshevaya and F. Diaz-A and J. A. Hernandez-P},
  journal={2008 Microwaves, Radar and Remote Sensing Symposium},
Amplification of space charge waves (SCW) due to the negative differential conductivity in n-GaN films placed onto a semi-infinite substrate is investigated theoretically. A general case of transverse inhomogeneous films is considered. The diffusion-drift equations for volume electron concentration were used jointly with the Poisson equation for the electric field. The transverse inhomogeneity results in a decrease of the electron mobility near the surfaces of the film due to surface scattering… CONTINUE READING


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