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<h2 class="hd hd-2 unit-title">An Introduction to the pn Junction</h2>
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<h2 class="hd hd-2 unit-title">pn Junction Electrostatics</h2>
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<h2 class="hd hd-2 unit-title">Band Diagram of a pn Junction</h2>
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<h2 class="hd hd-2 unit-title">The Depletion Approximation & Summary</h2>
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<h2 class="hd hd-2 unit-title">In-Lecture Question 3.1</h2>
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In-Lecture Question 3.1
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<p>What is the Depletion Approximation?</p>
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