Abstract
Well aligned zinc oxide nanorod arrays (ZNAs) synthesized by a simple chemical bath deposition method were fabricated on pre-treated Si substrates. By keeping the molar VI/II ratio constant, the effect of precursor concentration on the growth and optical quality of the ZNAs was investigated. The as-synthesized ZNAs were characterized by field emission scanning electron microscopy (FESEM), x-ray diffraction (XRD) and photoluminescence spectroscopy (PL). FESEM images show that both the diameter and aspect ratio of the ZNAs increase dramatically as the precursor concentration increases. The XRD analysis indicates that all the as-grown ZNAs are crystalline and are preferentially oriented along the c-axis. The high intensity ratio of the UV emission to visible emission in the room temperature PL spectra illustrate that high optical quality ZNAs were produced.
| Original language | English |
|---|---|
| Pages (from-to) | 1543-1545 |
| Number of pages | 3 |
| Journal | Physica B: Condensed Matter |
| Volume | 407 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 15 May 2012 |
| Externally published | Yes |
Keywords
- Chemical bath deposition
- Nanorod arrays
- Si substrate
- ZnO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering