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p-n Junction Diode

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**Basic device technology**

Structure and principle of operation Electrostatic analysis of a p-n diode Depletion region and depletion capacitance Abrupt junction Linearly graded junction Current - voltage characteristics Shockley equation Generation-Recombination Process High injection Diffusion capacitance Reverse bias breakdown Thermal instability Tunneling effect Avalanche multiplication Transient behavior

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**Structure and principle of operation**

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**Energy band diagram of a p-n junction (a) before and (b) after merging the n-type and p-type regions**

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Thermal equilibrium

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**Energy band diagram of a p-n junction under reverse and forward bias**

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**General discussion - Poisson's equation**

Não é trivial de resolver!

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**The full-depletion approximation**

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**1. Região de carga espacial**

2. Nível de Fermi em equilíbrio 3. Built-in voltage 4. Built-in voltage e densidade de dopantes 5. Largura da região de carga espacial 6. Capacitância de depleção

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**The linearly graded p-n junction**

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**The ideal diode current**

The p-n diode current The ideal diode current

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p-n Junction Diode Exemplos e Exercícios

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