Abstract
Patterned ZnO nanodot (ND) arrays and a ND-cavity microstructure were realized on ananodic alumina membrane (AAM) surface through a spin-coating sol–gel process, whichbenefits from the morphology and localized negative charge surface of AAM as well as theoptimized sol concentration. The growth mechanism is believed to be a self-assemblyprocess. This provides a simple approach to fabricate semiconductor quantumdot (QD) arrays and a QD-cavity system with its advantage in low cost andmass production. Strong ultra-violet emission, a multi-phonon process, and itsspecial structure-related properties were observed in the patterned ZnO ND arrays.
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