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<h2 class="hd hd-2 unit-title">Photodevices: An Introduction</h2>
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<h3 class="hd hd-2">Photodevices: An Introduction</h3>
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<h2 class="hd hd-2 unit-title">Photoconductors</h2>
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<h3 class="hd hd-2">Photoconductors</h3>
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<h2 class="hd hd-2 unit-title">Photodetectors and Photovoltaics: An Overview</h2>
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<h2 class="hd hd-2 unit-title">The PIN Photodiode</h2>
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<h3 class="hd hd-2">The PIN Photodiode</h3>
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<h2 class="hd hd-2 unit-title">Photovoltaics</h2>
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<h2 class="hd hd-2 unit-title">Photovoltaic Materials and Design</h2>
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<h2 class="hd hd-2 unit-title">In-Lecture Question 5.1</h2>
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<p>Why is the maximum possible efficiency of a solar cell only about 30%</p>
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<h2 class="hd hd-2 unit-title">In-Lecture Question 5.2</h2>
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<p>Give three methods that can be used to improve the efficiency of a silicon solar cell.</p>
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<h2 class="hd hd-2 unit-title">Amorphous Silicon</h2>
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<h2 class="hd hd-2 unit-title">In-Lecture Question 5.3</h2>
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<p>Solar cells can be made from amorphous silicon, and are commonly used in devices such as calculators. Explain the reason for using amorphous silicon in place of crystalline silicon.</p>
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<h2 class="hd hd-2 unit-title">Summary: Photodevices</h2>
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<h3 class="hd hd-2">Summary: Photodevices</h3>
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<p>Note: There is an error in the video above. Photovoltaics operate in the 4th quadrant. </p>
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