• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Materials Engineering Innovation >Optical and AC conductivity studies of Co doped TiO_2 nanotubes
【24h】

Optical and AC conductivity studies of Co doped TiO_2 nanotubes

机译：Co掺杂TiO_2纳米管的光学和交流电导率研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cobalt doped TiO_2 nanotubes are prepared by the combination of sol-gel process with hydrothermal treatment. The morphology and crystalline structure of TiO_2 nanotubes are characterised by transmission electron microscopy (TEM) and X-ray diffraction respectively. Optical studies are done by UV-Vis reflectance spectra and photoluminescence spectra (PL). Co doping induces a structural transformation from anatase to rutile. PL spectrum shows the presence of surface oxygen vacancies and self trapped excitons in Co doped and undoped TiO_2 nanotubes. Co doped sample show a peak in PL spectrum at 526 nm, which is not in the undoped sample. An AC conductivity data analysis is carried out in the temperature range 303 to 423 K for the TiO_2 nanotubes and Co doped TiO_2 nanotubes. The temperature at which the transition to the positive temperature coefficient of resistance occurs differs in undoped and Co doped TiO_2 nanotubes.
机译：溶胶-凝胶法与水热处理相结合制备了钴掺杂的TiO_2纳米管。分别通过透射电子显微镜（TEM）和X射线衍射表征了TiO_2纳米管的形貌和晶体结构。光学研究是通过UV-Vis反射光谱和光致发光光谱（PL）进行的。共掺杂诱导从锐钛矿到金红石的结构转变。 PL光谱显示在Co掺杂和未掺杂的TiO_2纳米管中存在表面氧空位和自陷激子。共掺杂样品在526 nm的PL光谱中显示出一个峰，未掺杂样品中没有。对于TiO_2纳米管和Co掺杂的TiO_2纳米管，在303至423K的温度范围内进行AC电导率数据分析。在未掺杂和Co掺杂的TiO_2纳米管中，发生向电阻正温度系数转变的温度不同。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号