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<h2 class="hd hd-2 unit-title">In-Lecture Question 2.3</h2>
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<p>For very pure silicon, the carrier recombination time is \(1ms\). When Au is present in a concentration of \(10^{15} cm^{-3}\), the recombination time is \(1 \mu s\). Why does gold change the recombination time?</p>
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<h2 class="hd hd-2 unit-title">Time Dependence of Carrier Concentration</h2>
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<h2 class="hd hd-2 unit-title">Crystal Colors and Summary</h2>
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