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← ScienceWhich outcome occurs when silicon doping alters gallium arsenide molecular orbitals?
A)Decreased Schottky junction barrier height✓
B)Increased covalent bond energy overall
C)Enhanced piezoelectric material properties
D)Reduced thermal expansion coefficient value
💡 Explanation
A Schottky barrier's height decreases because silicon doping introduces donor states modifying the band bending and therefore Fermi level alignment. A lower barrier results, rather than changes in bond strengths or piezoelectricity because those are different mechanisms with varied preconditions.
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