How electron -hole pairs are created in a semiconductor material ?

How are electron-hole pairs created in a semiconductor?

Electron hole pairs are generated in a photodiode

A hole in a semiconductor is

What are holes in a semiconductor?

What are holes in semiconductor?

Electron Holes pairs are generated in photodiode

In an n-type semiconductor if n and p are the concentration of electrons and holes respectively and n_(i) is the concentration of electron-hole pairs in a pure semiconductor then

" The cut-off wavelength for a photon able to create electron-hole pair in a semiconductor having energy band gap of "1.6eV" is "

The ratio of electron and hole currents in a semiconductor is 7/4 and the ratio of drift velocities of electrons and holes is 5/4, then the ratio of concentrations of electrons and holes will be