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← ScienceWhich outcome will occur when exceeding silicon crystal purification limits?
A)Decreased overall solar cell efficiency✓
B)Increased electron-phonon scattering rate
C)Enhanced thermoelectric energy conversion
D)Elevated crystal lattice vibrational frequency
💡 Explanation
Decreased solar cell efficiency results because increased impurities enable non-radiative electron-hole recombination, resulting in increased energy loss. Therefore, solar cell efficiency drops, rather than alternatives of increased thermal or vibrational properties under such minimal impurity perturbations.
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