Journal
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 10, NO 10
Volume 10, Issue 10, Pages 1317-1321Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssc.201200975
Keywords
nanostructures; zinc oxide; pulsed laser deposition; gallium nitride
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Funding
- French Association National de la Recherche et de la Technologie
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Self-forming, vertically-aligned, arrays of black-body-like ZnO moth-eye nanostructures were grown on Si(111), c-Al2O3, ZnO and high manganese austenitic steel substrates using Pulsed Laser Deposition. X-ray diffraction (XRD) revealed the nanostructures to be well-crystallised wurtzite ZnO with strong preferential c-axis crystallographic orientation along the growth direction for all the substrates. Cathodoluminescence (CL) studies revealed emission characteristic of the ZnO near band edge for all substrates. Such moth-eye nanostructures have a graded effective refractive index and exhibit black-body characteristics. Coatings with these features may offer improvements in photovoltaic and LED performance. Moreover, since ZnO nanostructures can be grown readily on a wide range of substrates it is suggested that such an approach could facilitate growth of GaN-based devices on mismatched and/or technologically important substrates, which may have been inaccessible till present. [GRAPHICS] SEM side view of ZnO nanocones grown on Si(111). (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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