LAT 2010: INTERNATIONAL CONFERENCE ON LASERS, APPLICATIONS, AND TECHNOLOGIES
Issue Date:
2011
Abstract(summary):
The Mg(0.27)Zn(0.73)O/ZnO multiple quantum wells with different well width L(w) have been grown by pulsed laser deposition method. The interface roughness of quantum wells was inherited from the bottom one and did not exceed 1 nm. The quantum confinement effect has been observed. The exciton binding energy of the two-dimensional Mg(0.27)Zn(0.73)O/ZnO structures was two times higher in comparison with the bulk ZnO. A sharp increase of exciton peak intensity in the photoluminescence spectra at well width reduction was observed. The optical excited stimulated emission in quantum wells Mg(0.27)Zn(0.73)O/ZnO with an excitation threshold similar to 210 kW/cm(2) has been demonstrated.