科研之友
微信
新浪微博
Facebook
分享链接
摘要
We report the preparation and thermal annealing of SnO2-core/TiO2-shell nanorods using a two-step process comprising the thermal evaporation of Snpowders and the sputter-deposition of TiO2. X-ray diffraction analysis revealed that the shells were crystallized by annealing. Photoluminescence measurements showed that the major yellow emission of the SnO2 nanorods was enhanced in intensity by sheathing them with TiO2 and was further enhanced by annealing. A reducing atmosphere was found to be more efficient in enhancing the yellow emission by annealing than an oxidative atmosphere. The origin of the emission enhancement by coating and annealing is also discussed.
- 出版日期2011-2
