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Abstract
Pure SiO2 xerogels and SiO2 xerogels containing SrF2: Eu3+/: Tb3+ crystals were prepared using sol-gel method. Luminescent spectra showed excitation and emission peaks characteristic to Eu3+ and Tb3+ 4f - 4f transitions. ET Tb3+→Eu3+ has been observed. XRD pattern of SiO2 matrix confirmed lack of long range order. Patterns of SiO2-SrF2:Eu3+ and SiO2-SrF2:Tb3+ showed peaks corresponding to SrF2. SEM images have shown agglomerates of particles and presence of pores. FTIR spectra showed bands related to Si-O vibrations and vibrations associated with the OH groups. Thus, SiO2-SrF2 system doped with Eu3+ and Tb3+ could be a potential candidate for LEDs applications. Review of other materials for LED applications is also presented.
Authors (8)
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Irena Bylińska
- Wydział Chemii Katedra Chemii Biomedycznej
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- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- EYEC MONOGRAPH 4th European Young Engineers Conference 2015 strony 180 - 193
- Language:
- English
- Publication year:
- 2015
- Bibliographic description:
- Walas M., Kościelska B., Lewandowski T., Łapiński M., Sadowski W., Kłonkowski A., Wiczk W., Bylińska I.: Luminescence properties of Eu3+ and Tb3+ doped silica-based xerogels// EYEC MONOGRAPH 4th European Young Engineers Conference 2015/ ed. Michał Wojasiński, Bartosz Nowak Warszawa: Faculty of Chemical and Process Engineering, Warsaw University of Technology, 2015, s.180-193
- Verified by:
- Gdańsk University of Technology
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