The extent of conductivity depends upon the energy
gap (Eg) between the top of valence band (EV ) and the bottom of the
conduction band EC The electrons from valence band can be excited by
Rationalised 2023-24
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Semiconductor Electronics:
Materials, Devices and
Simple Circuits
heat, light or electrical energy to the conduction band and thus, produce
a change in the current flowing in a semiconductor 11 For insulators Eg > 3 eV, for semiconductors Eg is 0