Título

UV TO RED UPCONVERSION EMISSION FROM ERBIUM YTTERBIUM CODOPED BARIUM ZIRCONATE

Autor

JOSE SAMUEL PEREZ HUERTA

Colaborador

Luis Armando Diaz-Torres (Asesor de tesis)

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

BARIUM ZIRCONATE, RARE EARTHS, OPTICAL SPECTROSCOPY, X-RAY, DIFFRACTION - (AUTOR) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) FÍSICA - (CTI) ÓPTICA - (CTI)

Resumen o descripción

"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."

Fecha de publicación

julio de 2007

Tipo de publicación

Tesis de maestría

Versión de la publicación

Versión publicada

Recurso de información

http://cio.repositorioinstitucional.mx/jspui/handle/1002/670

Formato

application/pdf

Idioma

Inglés

Cobertura

León, Guanajuato

Audiencia

Público en general

Sugerencia de citación

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.

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DEL CIO

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