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Which effect arises when applying strain to a silicon crystal?

A)Modulated band gap energy
B)Increased Fermi level solely
C)Enhanced electron-phonon coupling
D)Elevated intrinsic carrier concentration

💡 Explanation

Applying strain modifies the crystal lattice, deforming electronic bands, because this causes a change in the band gap energy via the deformation potential mechanism; therefore, the band gap becomes modulated to varying degrees of compression, rather than solely affecting carrier concentration.

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