Recent content by sunnyleekr

We usually learn semiconductor physics based on the fact that dopant ionization is present. The simplest doped device we can think of will be pn-diode. And we know analytically what the depletion width, built-in potential and band diagram will be with given temperature and doping (Na/Nd)...

Thank you for the reply but if the band diagram doesn't change much, how can we describe the built-in potential since there is no mobile(ionized) charge present?

Hi What could be the band diagram of pn-junction diode at very low temperature where dopant ionzation is completely frozen out? Would it still be like the band diagram at room temperature?