Electronic Devices and Communication MCQ with Answers

in n-type semiconductor majority carriers and minority carriers are respectively electrons and holes

in p-type semiconductor the dopant is acceptor

The addition of trivalent impurities?such as boron, aluminium or gallium to an intrinsic semiconductor?creates deficiencies of valence electrons,called holes. It is typical to use B2H6?diborane gas to diffuse boron into the silicon material.

The electron and hole concentration in a semiconductor in thermal equilibrium is given by 2n_en_h=n²_i

Diffusion in a p-n junction is due to concentration gradient