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نوار رسانش
The orbital possesses two energy levels, bonding and anti-bonding, separated by an energy In a solid, these levels widen to become bands, the valence band (VB) and the conduction band (CB) respectively.
If a silicon atom is replaced by an atom from column 5 of the periodic table, such as arsenic (As), the fifth electron is weakly bonded and passes to the conduction band.
The valence band (VB), the forbidden band (FB) and the conduction band (CB).
An electron is excited and passes into the conduction band.
It immediately relaxes with the minimum energy of the conduction band.
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