1. Tardigrade
  2. Question
  3. Physics
  4. The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm, is incident on it. The band gap in (eV) for the semiconductor is:

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than $2480\, nm$, is incident on it. The band gap in ($eV$) for the semiconductor is:

AIEEEAIEEE 2005Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

$E_{g}=h\,v$
$=\frac{h\,c}{\lambda}=\left(\frac{6.63\times10^{-34}\times3\times10^{8}}{2480\times10^{-9}\times1.6\times10^{-19}}\right)eV$
$=0.5\,eV$