Te hexagonal nanotubes: formation and optical properties

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• 作者：Jing Wang ; Ming Fang ; Guang Tao Fei ; Mao Liu…
• 刊名：Journal of Materials Science
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：51
• 期：15
• 页码：7170-7178
• 全文大小：1,819 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Characterization and Evaluation Materials
  Polymer Sciences
  Continuum Mechanics and Mechanics of Materials
  Crystallography
  Mechanics
  
• 出版者：Springer Netherlands
• ISSN：1573-4803
• 卷排序：51

文摘

Hexagonal Te nanotubes have been synthesized via hydrothermal method. To demonstrate the formation mechanism, the effect of experimental parameters, such as concentration, surfactant, reducing agent, and reaction time, has been investigated. It is found the Te-tubular nanostructure in our experiments is the result of synergistic effect of surfactant, reducing agent, and reaction agent. Further investigation on the photoluminescence (PL) of the Te nanotubes indicates a broad PL peak at about 532 nm (2.33 eV), which is about 6.6 times over its bandgap (0.32 eV). By analyzing the temperature-related Raman spectra, the PL peak has been tentatively ascribed to the surface oxygen-related defect of the Te nanotubes.