Synthesis and luminescence properties for europium oxide nanotubes

Zunli Mo, Zhepeng Deng, Ruibin Guo, Qiangang Fu, Chao Feng, Pengwei Liu, Yu Sun

科研成果: 期刊稿件文章同行评审

12 引用 (Scopus)

摘要

A novel high temperature sensitive fluorescent nanocomposite has been successfully synthesized by an economic hydrothermal method using carbon nanotubes (CNTs), europium oxide, and sodium dodecyl benzene sulfonate (SDBS). To our great interest, the nanocomposites show high temperature sensitivity after calcinations at various temperatures, suggesting a synergetic effect of CNTs and europium oxide which leads to ultrahigh fluorescence intensity of europium oxide nanotubes. When the novel high temperature sensitive fluorescent nanocomposites were calcined beyond 620 °C for 4 h, the obtained nanocomposites have a strong emission peak at around 540 and 580 nm, due to the 5D07Fj (j = 0, 1) forced electric dipole transition of Eu3+ ions. In turn, the emission spectra showed a slight blue shift. The intensity of this photoluminescence (PL) band is remarkably temperature-dependent and promotes strongly beyond 620 °C. This novel feature is attributed to the thermally activated carrier transfer process from nanocrystals and charged intrinsic defects states to Eu3+ energy levels. The novel high temperature sensitive fluorescent nanocomposite has potential applications in high temperature warning materials, sensors and field emission displays. It is also interesting to discover that CNTs have the effect of fluorescence quenching.

源语言英语
页(从-至)121-126
页数6
期刊Materials Science and Engineering: B
177
1
DOI
出版状态已出版 - 25 1月 2012

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