ELECTRONICS II Spring 2018 Lec. 3Dr. Mona M. Soliman IT Dept.
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2 Prev. Lect. Charge Carriers n & p carriers Energy levels (Valence & Conduction) Electron-hole pair process Fermi-Dirac distribution Intrinsic (pure) semiconductor At T = 0 K insulator. At T = 300 K very small number of charge carriers. At room temperature (T = 300 K), ni = 1.45 x 1010carriers/cm3 One free electron per 6.9 x 1012Si atoms