| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5403768 | Journal of Luminescence | 2008 | 4 Pages |
Abstract
ZnO-CdO-TeO2 was employed as a host of Tb3+ and Yb3+ ions. The matrix doped with Tb3+ presents a crystalline/amorphous structure, while the same matrix shows an amorphous structure when it is doped with Yb3+. Optical absorption spectra, measured by using photoacoustic (PA) spectroscopy, allowed to determine the band gap, which is localized in the range 3.47-3.60Â eV. Both kinds of ions Tb3+ and Yb3+ in the ZnO-CdO-TeO2 matrix show emissions that are characteristic of such ions. For Tb3+ the signals were allocated in 548, 586, 622Â nm, respectively, while for Yb3+ only one signal was registered at 1000Â nm.
Related Topics
Physical Sciences and Engineering
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Physical and Theoretical Chemistry
Authors
C. Ruvalcaba-Cornejo, M. Flores-Acosta, Ma. Elena Zayas, R. Lozada-Morales, R. Palomino-Merino, J.E. Espinosa, O. Portillo-Moreno, J. MartÃnez-Juárez, O. Zelaya-Angel, S.A. Tomás, A.B. Soto,