PHYSICS OF SEMICONDUCTOR DEVICES J. P Colinge Department of electrical and Computer Engineering University of california, Davis C. A. Colinge Department of Electrical and Electronic Engineering California State University KLUWER ACADEMIC PUBLISHERS NEW YORK, BOSToN, DORDRECHT, LONDON, MOSCOPHYSICS OF SEMICONDUCTOR DEVICES by J. P. Colinge Department of Electrical and Computer Engineering University of California, Davis C. A. Colinge Department of Electrical and Electronic Engineering California State University KLUWER ACADEMIC PUBLISHERS NEW YORK, BOSTON, DORDRECHT, LONDON, MOSCOW