Photoluminescent characteristics of MgxZn1-xO (0 <= x <= 0.18) nanorods

Abstract

We report on continuous wave and time-resolved photoluminescent characteristics of MgxZn1-x O (0 <= x <= 0.18) alloy nanorods grown on Si substrates using catalyst-free metal-organic chemical vapor deposition. Low temperature time- integrated photoluminescence (PL) spectra of the alloy nanorods clearly exhibited a dominant PL peak of a single MgxZn1-xO phase without showing any PL peak from ZnO. In addition, dominant PL peak positions of the alloy nanorods were blueshifted with increasing Mg content in the nanomaterials. Using temperature-dependent PL spectra and time- resolved PL spectra of MgxZn1-xO nanorods, we discuss the composition fluctuations in MgxZn1-xO(0 <= x <= 0.18) nanorods.