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Effect of Al 2 O 3 on the Structure and Photoluminescence Properties of Sol‐gel Glass Doped with Rare Earth Organic Complex
Author(s) -
Jing Xiao,
GuiJun Fu,
HanXing Liu,
ShiXi Ouyang
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200590685
Subject(s) - photoluminescence , europium , chemistry , doping , luminescence , sol gel , analytical chemistry (journal) , ion , glass transition , emission spectrum , mineralogy , spectral line , materials science , nanotechnology , polymer , organic chemistry , physics , optoelectronics , astronomy
Both silica glass materials singly doped with rare earth organic complex and co‐doped with Al 3+ were prepared by in situ sol‐gel method respectively. XRD and SEM measurements were performed to verify the non‐crystalline structure of the glass. The excitation spectra, emission spectra and IR spectra were measured to analyze the influence of the glass contents on the structure of the glass and the energy level of the doped Eu(III) ions. The effect of Al 3+ on the photoluminescence properties of rare earth organic complex in silica glass was investigated. The IR spectra indicated that the in situ synthesized europium complex molecule was confined to the micropores of the host and the vibration of the ligands was frozen. When Al 2 O 3 was doped into the silica host gel, the rare earth ions in the silica network were wrapped up and dispersed by Al 2 O 3 , so the distribution of Eu(III) complex in the host was more homogeneous, and the luminescence intensity of 5 D 0 ‐ 7 F 2 transition emission of the Eu 3+ ions was improved. The results showed that an appropriate amount of Al 3+ added to the gel glass improved the emission intensity of the complex in the silica glass, and when the content of Al 2 O 3 reached 4 mol%, the maximum emission intensity could be obtained compared with that of other samples containing different Al 2 O 3 contents.