Abstract
Ordered arrays of ZnO nanodots were fabricated by pulsed laser deposition (PLD)using an anodic aluminium oxide (AAO) nanopore membrane. Hexagonal-shapedZnO nanodots with an average diameter of 60 nm and a periodicity of 100 nmwere uniformly assembled into hexagonally ordered nanopores of the AAOmembrane. Control of the oxygen pressure used in PLD resulted in a preferentialphotoluminescence (PL) at 380 nm from the ZnO nanodots: keeping the higherO2 pressure gave a dominant PL peak in the UV range over the visible range, which isattributed to the reduction of the number of oxygen vacancies.
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