explain about energy gap of a semiconductor
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Band gap or energy gap, in solid-state physics, a range of energy levels within a given crystal that are impossible for an electron to possess. Generally, a material will have several band gaps throughout its band structure (the continuum of allowed and forbidden electron energy levels), with large band gaps between core bands and progressively narrower band gaps between higher bands until no more occur. The phenomenon of the band gap occurs when two adjacentallowed bands are not wide enough to span the full range of electron energy levels.
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Band gap or energy gap, in solid-state physics, a range of energy levels within a given crystal that are impossible for an electron to possess. Generally, a material will have several band gaps throughout its band structure (the continuum of allowed and forbidden electron energy levels), with large band gaps between core bands and progressively narrower band gaps between higher bands until no more occur. The phenomenon of the band gap occurs when two adjacentallowed bands are not wide enough to span the full range of electron energy levels.
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