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Studio_1 - Studio 1 Review • P-N Junction Diode –...

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Unformatted text preview: Studio 1 Review • P-N Junction Diode – Reverse bias diode junction capacitance • MOSFET – Physical construction – Circuit symbols • Lab Exercise – PN junction capacitance – MOSFET Gate capacitance • Text: – Sec. 1.1 pp. 1-12 – Sec. 1.2 pp. 16-20; Sec 2.1 pp. 82-94 Semiconductor Physics “Review” • Chemistry Review • Types of Materials – Conductor, Insulator, Semiconductor • PN junction – Depletion region – Junction capacitance P-N Junction Diode • Junction between p-type, n-type materials • Assume structure is simple enough that we can consider only one spatial dimension • Model: only consider “extra” charges • Mobile charges contributed by dopants: each mobile charge was contributed by a fxed charge oF opposite sign P-N Junction Diode • Thought experiment: take isolated p-type, n- type and bring together V A = 0 (t=0) • No electric feld; Thermal diFFusion V A = 0 (equilibrium t > 0) • Internal electric feld balances diFFusion V A positive (forward bias) • Applied V A “overpowers” internal E Feld V...
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Studio_1 - Studio 1 Review • P-N Junction Diode –...

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