Morphology Control and Photoluminescent Properties of Bundled ZnO Nanorods Array Based on Silicon Nanoporous Pillar Array

Abstract:

A silicon nanoporous pillar array (Si-NPA) is a silicon hierarchical structure with regularly patterned surface morphology. An array of bundled ZnO nanorods was grown based on Si-NPA by a catalyst-free thermal evaporation method. The morphology of ZnO/Si-NPA was found to be greatly affected by the growth parameters such as the grown temperature and the ratio nitrogen and oxygen. The room-temperature photoluminescence (PL) spectrum of ZnO/Si-NPA showed a violet emission at ∼410 nm and a blue-green emission around 500 nm, which were attributed to the PL of Si-NPA substrate and oxygen vacancies of ZnO, respectively. The results indicated that ZnO/Si-NPA is a promising optical material.

• Periodical: Key Engineering Materials (Volume 727)
• Pages: 598-603
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.727.598
• Online since: January 2017
• Authors: Ling Li Wang, Shi Quan Feng, Hai Yan Wang
• Keywords: Photoluminescent, Silicon Nanoporous Pillar Array (Si-NPA), ZnO/Si-NPA

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