Sateesh Prathapani

4 Questions 17 Answers 0 Followers

Questions related from Sateesh Prathapani

Does mass action law deviates in ionic semiconductors due to defects like vacancies or interstitials?

I am working with ionic semiconductors, the intrinsic carrier concentration calculated is about 10^5 /cm3 for a band gap of 1.54 eV. From the value of experimentally determined fermi level (The...

10 October 2017 9,471 0 View

Considering defects or any special case, Does GaAs has extrinsic carrier density of 10^16/cm3 (considering as non-degenerate case)?

For ionic semiconductor, GaAs (Eg=1.42 eV, ni ~10^6/cm3) following mass action law np = ni^2, if p = 1, then the maximum value of n is the square of ni which is ~10^12. I would like to know, due...

10 October 2017 6,972 3 View

Why does graphene can have Electron diffraction pattern?

When we have absolutely single atomic layer graphene, if we pass electron beam (in TEM for SAED pattern) normally to the sheet how diffraction could occur ? For any diffraction condition to be...

03 March 2015 1,277 6 View

How is the hole transported through the metal in an application to a solar cell?

If we sandwich a semiconducting material between two metal electrodes, on shining light, electron jumps from valence band to conduction band generating electron - hole pair in the semiconductor....

03 March 2014 1,666 7 View