In the case of an intrinsic semiconductor (say Si) where each Si is having 4 outermost electrons, its crystal structure consists of making 4 covalent bonds with 4 negihbouring Si atoms. Each bond consists of two eletrons.
Now if one of the bonds get broken due to some reason (collisions or high temperature) then one electron gets freed and it will be having sufficient energy to cross the band gap and be ready for conduction. So in intrinsic semiconductors, current flows due to breakage of crystal bonds.
Was this answer helpful?
0
0
Top Questions on Semiconductor electronics: materials, devices and simple circuits
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
Lesser power losses.
Uses of Semiconductor:
Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.
