ФТТ, 2008, том 50, выпуск 9
ФТТ, 2008, том 50, выпуск 9
| Содержание | Предыдущая статья | Следующая статья | Поиск |
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Luminescent materials based on thin metal oxide films doped
with rare earthions
P.Kanarjov, V.Reedo, I.Oja Acik, L.Matisen, A.Vorobjov, V.Kiisk, M.Krunks, I.Sildos
Institute of Physics, University of Tartu,
51014 Tartu, Estonia
Tallinn University of Technology, Department of Materials Science,
19086 Tallinn, Estonia
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Thin luminescent films of TiO : Sm were prepared by sol-gel-method using spray pyrolysis technique. Various techniques (includind IR absorption, Raman, AFM, XPS, photoluminescence) were to characterize the samples. After a thermal treatment up to C, an intense Sm luminescence with a well-resolved fine structure was observed under optical excitation within the fundamental absorption band of the TiO host. After further thermal treatments up to C the luminescence was quenched yet still no anatase-to-rutile phase transformation was observed. The behavior is attributed to nanocrystallinity and segregation of Sm ions onto surface. Estonian Science Foundation is acknowledged for financial support (grants N 6999, 6660, 6954 and 7102). PACS: 78.30.-j, 64.70.Kb |
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