Citation: WANG Xia, HU Hui, BAI Yan. Enhancement of Upconversion Luminescence in TeO₂:Tm³⁺/Er³⁺/Yb³⁺ Nanoparticles by Li⁺ Doping[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(4): 659-664. doi: 10.3969/j.issn.1001-4861.2013.00.072 shu

Enhancement of Upconversion Luminescence in TeO₂:Tm³⁺/Er³⁺/Yb³⁺ Nanoparticles by Li⁺ Doping

1.
Chemistry Departerment, Jinan Univercity, Guangzhou 510632, China

Received Date: 26 July 2012
Available Online: 8 September 2012
Fund Project: 国家自然科学基金(No.21075053)资助项目。 (No.21075053)

α-TeO₂:Tm³⁺/Er³⁺/Yb³⁺ and β-TeO₂:Tm³⁺/Er³⁺/Yb³⁺ nanoparticles with Li⁺ doping had been prepared via a hydrothermal method. The nanoparticles were characterized by X-ray diffraction, transmission electron microscopy and upconversion luminescence spectra. The results indicated that the doping of Li⁺ ions does not change the crystal form and structure of the as-prepared nanoparticles basically. The as-prepared nanoparticles showed the blue emission (476 nm), green emissions (525 nm, 545 nm) and red emissions (659 nm, 667 nm) under 980 nm near-infrared light excitation, respectively, corresponding to energy level transition of ¹G₄→³H₆ of Tm³⁺ ions, ²H_11/2 →⁴I_15/2 and ⁴S_3/2→⁴I_15/2 of Er³⁺ ions, ⁴F_9/2→⁴I_15/2 of Er³⁺ ions and ³F₂→³H₆ of Tm³⁺ ions. The results also indicated that doping of Li⁺ ions can increase the luminous intensity of the white light system, and it does not change the white color of the nanoparticles basically. In addition, the upconversion luminescence mechanism of the nanoparticles was analyzed.
- Li⁺ doping;upconversion;TeO₂ nanoparticles;hydrothermal method
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Enhancement of Upconversion Luminescence in TeO2:Tm3+/Er3+/Yb3+ Nanoparticles by Li+ Doping

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通讯作者: 陈斌, bchen63@163.com

Enhancement of Upconversion Luminescence in TeO₂:Tm³⁺/Er³⁺/Yb³⁺ Nanoparticles by Li⁺ Doping