Cathodoluminescence of single ZnO nanorod heterostructures

Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T=5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied by a spectral blueshift of 10-30 meV. This indicates a rather poor structural quality of the nanorod bottom part, close to the substrate. ZnO/ZnMgO quantum wells grown on top of ZnO nanorods are found to exhibit much stronger confinement effects as compared to their two-dimensional counterparts, suggesting a reduced spontaneous and piezoelectric polarization effects.We acknowledge supports from the France-Korea Associated International Laboratory Center for Photonics and Nanostructures (CPN), the European Union projects STREP FP6-016924 NANDOS and HPRN-CT-2002-00298 Photon Mediated Phenomena in Semiconductor Nanostructures

Diffractive optics development using a modified stack-and-draw technique

Kivachuk V. S. Managed chaos and its consequences - 2 (evolution and prospects