Impact of exciton dissociation on the metal-enhanced photoluminescence in ZnO/ZnMgO multiple quantum wells
Source abstract
Abstract
We have investigated metal-enhanced excitonic emission from ZnO/ZnMgO multiple quantum wells (MQWs) grown by molecular beam epitaxy. Capping of Al nanoparticles results in ~1.5-fold enhancement of photoluminescence (PL) at room temperature. Temperature-dependent PL analysis suggests that exciton dissociation acts as an additional non-radiative recombination channel when the MQWs are capped with metal. The non-radiative recombination rate is found to be larger than the radiative one by ~21-fold. This explains the relatively low enhancement ratio of PL although significant surface plasmon coupling is present.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Ga2O3 and related materials · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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