Title: Optical properties of nanoporous structure ZnO

Authors: Aziz Azlinda; Kevin Alvin Eswar; Zuraida Khusaimi; Mohamad Rusop Mahmood

Addresses: NANO-SciTech Centre (NST), Institute of Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia; Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia ' NANO-SciTech Centre (NST), Institute of Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia; Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia ' NANO-SciTech Centre (NST), Institute of Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia; Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia ' NANO-SciTech Centre (NST), Institute of Science, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia; Faculty of Electrical Engineering, NANO-ElecTronic Centre (NET), Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia

Abstract: This paper presents an efficient method to prepare ZnO nanoporous structure via immersion of Si substrate with catalyst assistance (gold) in the mixture of zinc nitrate hexahydrate (Zn(NO₃)₂.6H₂O) and urea (CH₄N₂O). Photoluminescence (PL) spectra of nanoporous ZnO revealed it had strong UV emission with low oxygen defect. Optical properties are found to be significantly affected by varying the Zn2+: urea ratio but from surface morphology observation, the porous structure was stable and seemingly unchanged.

Keywords: ZnO; gold; zinc nitrate hexahydrate; Zn(NO₃)₂.6H₂O; urea; CH₄N₂O; catalytic.

DOI: 10.1504/IJMATEI.2016.084616

International Journal of Materials Engineering Innovation, 2016 Vol.7 No.3/4, pp.175 - 183

Published online: 19 Jun 2017 *

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