Clif Fonstad, 9/29/09Lecture 6 - Slide 1•AnnouncementsFirst Hour Exam - Oct. 7, 7:30-9:30 pm; thru 10/2/09, PS #4•ReviewMinority carrier flow in QNRs:1. Lmin<< w, 2. Lmin>> w•I-V relationship for an abrupt p-n junctionAssume:1.Low level injection2. All applied voltage appears across junction:3. Majority carriers in quasi-equilibrium with barrier4. Negligible SCL generation and recombinationRelate minority populations at QNR edges, -xpand xn, to vABUse n'(-xp), p'(xn) to find hole and electron currents in QNRsConnect currents across SCL to get total junction current, iD•Features and limitations of the modelEngineering the minority carrier injection across a junctionDeviations at low and high current levelsDeviations at large reverse bias6.012 - Microelectronic Devices and CircuitsLecture 6 - p-n Junctions: I-V Relationship- Outline
has intentionally blurred sections.
Sign up to view the full version.