Afterglow luminescence phenomena in the porous anodic alumina
Source abstract
Abstract
Abstract A series of mesoporous alumina layers obtained by anodic oxidation in solutions of H2SO4, H3PO4 and H2C2O4 were subjected to spectroscopic studies. Their photoluminescence was investigated mainly by the afterglow luminescence (A-Lum) method using a low-pressure mercury lamp emitting at 254 nm as the source of excitation. All mesoporous alumina samples (PAA) showed short-time emission (a few to a few 10 s) of biexponential decay. The intensity and shape of the emission spectra were proved to depend on the thermal treatment of Al/AL2O3 samples, type of electrolyte used in their synthesis and excitation time. On the basis of the determined kinetic parameters of emission decay curves and emission spectra, significant differences were found between the A-Lum and photoluminescence phenomena for all systems studied.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Anodic Oxide Films and Nanostructures · Smart Materials for Construction · Silicon Nanostructures and Photoluminescence
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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