期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 47, 期 10, 页码 6078-6085出版社
SPRINGER
DOI: 10.1007/s11664-018-6503-3
关键词
GLAD; nanowires; photoluminescence; thin film; TiO2; graphene oxide
资金
- NIT Nagaland
Vertically oriented TiO2 nanowires (NWs) have been fabricated on graphene oxide (GO) thin film (TF) using a catalytic free growth technique called glancing-angle deposition. GO TF was spin coated on Si substrate at different rotation speeds and the surface roughness measured by atomic force microscopy. Field-emission scanning electron microscopy confirmed formation of a heterostructure consisting of GO TF with thickness of similar to 300 nm and TiO2 NWs with length of similar to 800 nm. Selected-area electron diffraction analysis in transmission electron microscopy showed that the TiO2 NWs grown on the GO TF were amorphous in nature, as confirmed by x-ray diffraction analysis. A bandgap close to similar to 4.1 eV was obtained for GO TF, whereas a main band transition edge at 3.3 eV was obtained for a TiO2 NW/GO TF heterostructure sample, related to TiO2. Two subband transitions at 2.9 eV and 2.4 eV were also observed for the heterostructure sample, corresponding to oxygen and Ti3+ defect transitions for the TiO2 NWs. Enhanced photoluminescence and absorption were observed for the heterostructure sample as compared with the GO TF sample.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据