Study of some commercially fabricated semiconductor p-n junction characteristics and characterization of impurity levels present therein / Ms Khondaker Selima Begum. [Mphil Thesis] Begum, Ms Khondaker Selima author Junction transistors 621.3815282 BES Thesis (MS )--Department of Physics, University of Dhaka, Session : 1985-1986 Includes bibliographical references. Dhaka : University of Dhaka, 1992. 1992. 1992 Text v, 177, [4] p. : eng