Peak Position To Band Gap Filter

Converts a detected peak position to a band gap in eV.

Category	Peak Position to Band Gap
Node
Parameters	(none)
Inputs	Input: the input peak position
Outputs	Band Gap: the resulting band gap

Effect of the Filter

The filter will perform a simple multiplication or division to automatically convert a peak position (as determined by a peak finder filter) into a band gap value. It uses the formula

$E = \frac{hc}{\lambda}$

to perform the conversion (when the input is a peak position in the wavelength domain), where h is Planck’s constant, c is the speed of light.

The filter automatically detects the unit of the input data. It will always output the corresponding energy in electron Volts (eV).

The input data may specify the peak position in either wavelengths, wavenumber, frequency or period. The filter will then automatically select the appropriate conversion factor.