Impurity breakdown and terahertz luminescence in n-GaN epilayers under external electric field

V. A. Shalygin, L. E. Vorobjev, D. A. Firsov, V. Yu Panevin, A. N. Sofronov, G. A. Melentyev, A. V. Antonov, V. I. Gavrilenko, A. V. Andrianov, A. O. Zakharyin, S. Suihkonen, Pekka Törmä, M. Ali, H. Lipsanen