Photoluminescence properties of a single tapered CuO nanowire
| Autor: | C.-Y. Huang, Chia-Liang Cheng, Sheng Yun Wu, Shih-Bin Liu, Anindita Chatterjee |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Thermal oxidation
Copper oxide Photoluminescence Materials science business.industry Nanowire General Physics and Astronomy Mineralogy chemistry.chemical_element Surfaces and Interfaces General Chemistry Condensed Matter Physics Copper Surfaces Coatings and Films Blueshift law.invention chemistry.chemical_compound chemistry law Optoelectronics Crystallization business Spectroscopy |
| Zdroj: | Applied Surface Science. 256:3688-3692 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2010.01.007 |
| Popis: | Photoluminescence spectroscopy has been employed in order to explore the optical emission properties of a single CuO nanowire, grown on a copper grid in static air by simple thermal oxidation method. As the diameter of the single tapered CuO nanowire decreases, the green emission of the nanowire gradually shifts towards the higher energy side. A steady blue shift of 20 nm of the photoluminescence (PL) peak has been attributed to nanosize effect. Higher surface to volume ratio and enhanced surface defects along the growth direction of the nanowire might be responsible for the observed PL behavior. In addition, crystallization process along the length of the nanowire during growth to form pure CuO structure from the precursor state may also have some role in observed shift in the PL peak. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect