For both Si and GaAs the maximum valence band energy of an electron occurs at Â¯p= 0. The minimum energy of the conduction band electron in GaAs also occurs for Â¯p= 0, hence a transition across the bandgap only requires an E g energy absorbtion or emission. Because of this, GaAs is called a direct semi-conductor.
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Empire comes to Fox with an interesting pedigree: It was created by Danny Strong (who's written multiple award-winning projects for HBO) and Lee Daniels, who made Precious and The Butler â both films with a sheen of prestige, but both films to which people reacted in complex ways.