Codoping effect of O2 into Er-doped InP epitaxial layers grown by OMVPE

The temperature dependence of ESR in View the MathML source and the O2 codoping effect in View the MathML source have been studied by X-band ESR measurement at low temperature. The ESR at around g=6, which corresponds to Er3+ site with Td symmetry, lost itʹs intensity quickly as the temperature is increased and disappeared above View the MathML source. The temperature dependence of the integrated intensity turned out to be different from simple Curie law. The intensity of the ESR at around g=6 decreased as O2 is codoped into View the MathML source. No new ESR was observed in O2 codoped View the MathML source in contrast to the results of O2 codoped View the MathML source. These results are discussed in connection with the O2 codoping effect of photoluminescence spectra.