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http://cio.repositorioinstitucional.mx/jspui/handle/1002/670| UV TO RED UPCONVERSION EMISSION FROM ERBIUM YTTERBIUM CODOPED BARIUM ZIRCONATE | |
| JOSE SAMUEL PEREZ HUERTA | |
| Luis Armando Diaz-Torres | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| BARIUM ZIRCONATE, RARE EARTHS, OPTICAL SPECTROSCOPY, X-RAY, DIFFRACTION | |
| "Visible upconversion emission of Er3+ in nanocrystalline BaZrO3 (BZO) powder is obtained under IR excitation in the range between 900 to 1050 nm. In single Er3+ doped BaZrO3 the blue emission was neglected and when Yb3+ is added then it acts as a sensitizer. The BZO was prepared by a hydrothermal process at low temperature (100◦C). The synthesized nanocrystalline cubic perovskite phase remains stable under subsequent annealing treatment up to 1000◦C. Additional or different crystalline phases or segregation were not detected. Green and red emissions of Er3+ are enhanced in the codoped samples of Yb3+ − Er3+ by three orders of magnitude. The blue emission dependents on both excitation power and pump wavelength. It is the first time that upconversion emission is observed in a BaZrO3 matrix. A possible mechanism for the UV to red emission under NIR excitation is discussed based on experimental results." | |
| 2007-07 | |
| Tesis de maestría | |
| Inglés | |
| León, Guanajuato | |
| Público en general | |
| Pérez Huerta, (2007). "UV to red upconversion emission from Erbium Ytterbium codoped Barium Zirconate". Tesis de Maestría en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. León, Guanajuato. 62 pp. | |
| ÓPTICA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | MAESTRIA EN CIENCIAS (ÓPTICA) |
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