| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8021315 | Materials Letters | 2013 | 4 Pages |
Abstract
Rutile TiO2 microrods (TOMRs) were synthesized using a facile hydrothermal method and subsequently surface-treated with TiCl4 solution at different concentrations. CdSe quantum dots (QDs) were assembled on the TiO2 films as a sensitizer to improve the light harvesting efficiency in visible light, because the TiO2 absorbs only UV light. As the concentration of TiCl4 solution to 200Â mM was increased, the surface coverage of anatase TiO2 nanoparticles and the loading of CdSe QDs also increased. Furthermore, the anatase TiO2 between the rutile TOMR and the CdSe QD facilitates the charge separation, which suppresses the charge recombination. Due to these beneficial effects, the photoelectrochemical performance was significantly enhanced with the increased TiCl4 concentration.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Hyun Sik Kim, Sung-Woo Jung, Si Kyung Yang, Kwang-Soon Ahn, Soon Hyung Kang,