| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1530980 | Materials Science and Engineering: B | 2007 | 4 Pages |
Abstract
Luminescence properties of NaAl1−xTixP2O7 (x = 0–1) double phosphates under VUV excitation are studied. Partial densities of electronic states are calculated for perfect NaAlP2O7, NaTiP2O7 and Ti-doped NaAlP2O7 crystals. Pure NaAlP2O7 crystals exhibit emission bands peaking near 300 and 770 nm. Doping of NaAlP2O7 crystals with Ti ions leads to appearance of emission bands in blue-green spectral region with main peak near 500 nm. NaTiP2O7 exhibit emission in blue-green region with similar shape as for NaAlP2O7:Ti. The luminescence mechanisms in Ti-doped phosphates are discussed using both experimental and theoretical results. Observed emission bands in blue-green region of spectrum are ascribed to emission centers like Ti4+ + F-centers.
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Authors
Y. Hizhnyi, A. Oliynyk, O. Gomenyuk, S. Nedilko, P. Nagornyi, R. Boiko, V. Boyko,