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← ScienceWhich consequence results when impurities distort a semiconductor's band structure?
A)Reduced electron-hole recombination lifetimes
B)Increased thermal energy dissipation rate
C)Enhanced intrinsic carrier concentration
D)Modified semiconductor optical absorption spectrum✓
💡 Explanation
Modified optical absorption results because impurities create energy states within the band gap, which affects the wavelengths of light absorbed through the mechanism of photon excitation. Therefore, the absorption spectrum changes, rather than effects regarding carrier lifetime or thermal generation, which are secondary.
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