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← ScienceWhich mechanism limits heat dissipation within a silicon crystal?
A)Phonon scattering inhibits thermal conductivity✓
B)Electron mobility reduces heat transfer
C)Photon emission cools lattice negligibly
D)Radiative recombination overwhelms conductive cooling
💡 Explanation
Phonon scattering disrupts the ballistic transport of heat through the crystal lattice, because energy dissipates among phonon modes, therefore thermal conductivity reduces, rather than having radiative loses dominate or electrical conductivity directly removing heat.
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