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← ScienceWhich outcome results when a high-energy electron impacts semiconductor crystal lattice?
A)Impact ionization generates electron-hole pairs✓
B)Phonon emission increases lattice temperature
C)Raman scattering shifts photon energy
D)Bremsstrahlung radiation emits X-rays
💡 Explanation
When a high-energy electron impacts a semiconductor, impact ionization occurs because the electron's energy exceeds the bandgap, creating electron-hole pairs, exponentially increasing free carriers. Therefore, impact ionization is favored, rather than other effects better achieved through other forms of input.
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