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The role of surface depletion layer effects on the enhancement of the UV emission in ZnO induced by a nanostructured Al surface coating

Fiedler, Saskia; Lee Cheong Lem, Olivier; Ton-That, Cuong; Phillips, Matthew


The UV enhancement of Al-coated ZnO single crystals with a wide range of carrier densities is systematically studied using depth-resolved cathodoluminescence and photoluminescence as well as valence band X-ray photoemission spectroscopy (VB-XPS). An up to 17-fold enhanced PL UV emission for Al-coated ZnO with the highest carrier density was measured, which falls to a 12-fold increase for the lowest carrier density. Depth-resolved cathodoluminescence measurements confirm that the enhancement is...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Applied Surface Science
DOI: 10.1016/j.apsusc.2019.144409


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