Development and Photoluminescence of ZnO-ZnS Core-Shell Nanotube and Nanorod Arrays |
| Journal |
Key Engineering Materials (Volume 351) |
| Volume |
Composite Materials V |
| Edited by |
Di Zhang, Jingkun Guo and Chi Y. A. Tsao |
| Pages |
70-74 |
| DOI |
10.4028/www.scientific.net/KEM.351.70 |
| Online since |
October, 2007 |
| Authors |
Pai Chia Kuo,
San Yuan Chen,
Jong Shing Bow
|
| Keywords |
Core-Shell, Nanorods, Nanotube, Photoluminescence, Zinc Oxide ZnO, ZnS |
| Abstract |
After the wurtzite ZbS nanorods were synthesized by hydrothermal treatment in the
presence of ethylenediamine (en) aqueous solutions at 200oC, ZnS-ZnO core-shell nanorods were
readily obtained by annealing ZnS nanorods under oxygen at 650oC for 3-5 min. A strong broad peak
in the 450–550 nm visible range was clearly detected and its peak intensity could be greatly enhanced
after the ZnO shell was developed on hydrothermal ZnS nanorods. On the other hand, using AAO as
a template, ZnS-ZnO core-shell nanotubes could be synthesized using atomic layer deposition
process along with the sulfuration conversion of the ZnO nanotube array. This ZnO-ZnS core-shell
nanotube structure could be confirmed by x-ray photoelectron spectroscopy (XPS) analysis. In
addition, an enhanced UV emission along with the reduced visible emission was also detected for the
ZnO/ZnS core-shell nanotubes.. |
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