Module 6 : PHYSICS OF SEMICONDUCTOR DEVICES
Lecture 35 : Photoconductivity
 
   Recap
   In this course you have learnt the following
As the band gap in semiconductors is less than the energy of optical photons, carriers can move across the gap
  when light is incident on semiconductor. This is known as photoconductivity.
When there is a gradient of concentration, charge carriers move from a region of higher concentration to that of lower
  concentration. The process is known as diffusion.
Einstein relations provide connectivity between mobility of carriers and temperature for diffusive motion.
 

 

 

 

 

 

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