All Problems

Molecules and Crystals

Problem 6.207

Find the minimum energy of electron-hole pair formation in an impurity-free semiconductor whose electric conductance increases \(\eta=5.0\) times when the temperature increases from \(T_{1}=\) \(=300 \mathrm{~K}\) to \(T_{2}=400 \mathrm{~K}\)

Reveal Answer
Emin⁡=2kT1T2T2−T1ln⁡η=0.33eVE_{\min }=\frac{2 k T_{1} T_{2}}{T_{2}-T_{1}} \ln \eta=0.33 \mathrm{eV}
Prev
Next