“…biased below the breakdown voltage). Impact ionization models range from simple local analytical expressions [1], [2], where experimental impact ionization coefficients (α for electrons and β for holes) are fitted by exponential functions, all the way to Full Band Monte Carlo transport simulators [3], [4], [5], [6]. Alessandro Pilotto was with the Dipartimento Politecnico di Ingegneria e Architettura, University of Udine, 33100 Udine, Italy.…”