- Energy Band Diagram
                   - E-B Diagram of PN junction
                   - E-B Diagram of MOS capacitor
                   - Accumulation, Depletion and Inversion in MOS capacitor

             1. Draw Energy Band Diagram of NPN transistor in the forward active region.
                Using this diagram, briefly explain the operation principle of the transistor.

             2. Draw charge and E-field profiles in MOS capacitor made with P-type Si.
                Use Delta-Depletion approximation.

this homepage was constructed in 1997.2
Microelectronics lab figaro@semicon4.yonsei.ac.kr