Characterization of Interface in GaAs Epitaxial Wafer by Spatially Resolved Photoluminescence from Cleaved Face

Autor: Masaki Noji, Masaki Noji, Makoto Kiyama, Makoto Kiyama, Michio Tajima, Michio Tajima
Zdroj: Japanese Journal of Applied Physics; May 2000, Vol. 39 Issue: 5 p2585-2585, 1p
Abstrakt: We characterized the interface between the epitaxial layer and substrate of a GaAs wafer by measuring the microscopic photoluminescence (PL) on the cleaved face of the wafer. The intensity of the band-edge PL was higher in the epitaxial layer than in the substrate and locally decreased at the interface. This finding indicates that the non-radiative recombination centers are accumulated at the interface.
Databáze: Supplemental Index