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Ueda, K., Shimizu, Y., Takashima, H., Massuyeau, F. & Jobic, S. (2017) Photo- and cathodoluminescence of Eu3+ or Tb3+ doped CaZrO3 films prepared by pulsed laser deposition. Optical Materials, 73 504–508.
Added by: Richard Baschera (2017-12-05 15:46:42) Last edited by: Richard Baschera (2017-12-05 15:47:47) |
| Type de référence: Article DOI: 10.1016/j.optmat.2017.09.007 Clé BibTeX: Ueda2017 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, MIOPS Créateurs: Jobic, Massuyeau, Shimizu, Takashima, Ueda Collection: Optical Materials |
Consultations : 1/520
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
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Luminescent films of Eu3+ or Tb3+ doped CaZrO3 were epitaxially grown on SrTiO3 or LaAlO3 (001) single crystal substrates by pulsed laser deposition (PLD). They showed a high transmittance in the visible region and a smooth surface. Uniform red photoluminescence (PL) was observed from Eu3+ 5% doped films, and blue and green PL was observed from Tb3+ 0.5% and 5% doped films, respectively. These PL spectra of the films turned out to be very similar to those of the powder samples. Practically, it has to be noticed the use of a LaAlO3 substrate is necessary for intense blue luminescence for Tb3+ 0.5% doped films to avoid optical absorption of emitted light by the SrTiO3 substrate. The cathodoluminescence (CL) spectra of the red and green luminescent films were almost the same as those PL spectra. In contrast, blue CL was significantly enhanced in CL compared to PL. This was attributed to the shorter lifetime of the D-5(3)-F-7(J) transitions and many excited electron-hole pairs, which were generated rapidly on high energy electron irradiation. (c) 2017 Elsevier B.V. All rights reserved.
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