Energy calibration of a Rowland circle spectrometer for inverse photoemission

Inverse photoemission remains the main spectroscopic technique to explore the unoccupied electronic states of materials for both solids and adsorbed molecules. It also allows collecting information regarding the k-dependence of the electronic bands above the Fermi level. For spectrometers that consider the use of a diffraction grating as a way of analyzing the photon energy, the energy calibration of the collected spectra is a problem that needs to be addressed. In this paper we present results related to the application of an energy calibration procedure applied to a recently completed inverse photoemission spectrometer.