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← ScienceWhich consequence results when temperature decreases in semiconductors?
A)Increased electron mobility within band
B)Band gap energy magnitude increases✓
C)Electron-hole recombination rate decreases
D)Intrinsic carrier concentration rises
💡 Explanation
The band gap energy increases as temperature decreases, because the thermal vibrations that contribute to the band structure are reduced; therefore, the energy required for electrons to jump the gap increases, rather than alternatives like changes in electron mobility.
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