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Understanding Eu(3+) emission spectra in glass
Hongli Wen1, Guohua Jia, Chang-Kui Duan
1Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong S.A.R., PR China.
Physical Chemistry Chemical Physics : PCCP
|June 10, 2010
Summary
Researchers found a new way to understand europium (Eu3+) ion spectra in solids. This method relates spectral feature width to the zero phonon line intensity, improving analysis of crystal site asymmetry.
Area of Science:
- Solid-state spectroscopy
- Lanthanide luminescence
- Materials characterization
Background:
- Europium (Eu3+) emission spectra are used to study solid-state environments.
- The ratio of magnetic dipole to electric dipole transitions in Eu3+ indicates crystal site asymmetry.
Purpose of the Study:
- To establish a new empirical relationship between spectral feature width and the (5)D(0)-->(7)F(0) zero phonon line intensity in Eu3+-doped glass.
- To develop a theoretical model explaining these spectral characteristics.
Main Methods:
- Site-selective, low-temperature emission spectroscopy of Eu3+ in glass.
- Analysis of spectral feature widths and zero phonon line intensities.
- Development and validation of a quantitative theoretical relation.
Main Results:
- An empirical relation was discovered between spectral width and the relative intensity of the (5)D(0)-->(7)F(0) zero phonon line.
- A generic quantitative relation was developed from theory and validated experimentally.
- Deeper insight into Eu3+ spectral characteristics in the visible region was achieved.
Conclusions:
- The developed relation provides a more profound understanding of Eu3+ luminescence in glasses.
- This work enhances the ability to probe crystal site asymmetry using Eu3+ spectra.
- The findings contribute to the characterization of materials using lanthanide ion spectroscopy.
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