Semiconductor Ge has forbidden gap of 1.43 eV. Calculate maximum wavelength which result from electron hole combination.

The bank gap of an alloy semiconductor galiumarseide phosphie is 1.98eV . Calculate the wavelength of radiation that is emitted when electrons and holes in this material combine directly. What is the colour of the emitted radiation? Take h=6.6xx10^(-34) Js

The energy gap of silicon is 1.14 eV . The maximum wavelength at which silicon will begin absorbing energy is

The energy gap of silicon is 1.14 eV . The maximum wavelength at which silicon will begin absorbing energy is

For a semiconductor of band energy gap 1.5eV , calculate the wave-length of the emitted radiation when a conduction hand electron combines with a valence band hole. Given Planck's constat 6.6xx10^(-34)Js

Energy band gap of gallium arsenide phosphate is 1.98 eV.Calculate the wavelength of electromagnetic radiation emitted,when electrons and holes combine in this alloy semiconductor directly.

Forbidden energy gap of Ge is 0.75eV , maximum wave length of incident radiation for producing electron-hole pair in germanium semiconductor is