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Which risk significantly increases when a semiconductor crystal contains dislocations?

A)Increased electron-hole recombination rate
B)Higher thermal expansion coefficient
C)Decreased piezoelectric voltage generation
D)Suppressed superconduction critical temperature

💡 Explanation

Increased electron-hole recombination happens because dangling bonds within dislocations act as traps. The mechanism is Shockley-Read-Hall recombination; therefore, the recombination rate rises rather than thermal expansion being affected, or superconduction being enabled.

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