El Instituto Politécnico Nacional
Contribuye al desarrollo económico y social de la nación, a través de la formación integral de personas competentes; de la investigación, el desarrollo tecnológico y la innovación. Además tiene reconocimiento internacional por su calidad e impacto social.
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http://repositoriodigital.ipn.mx/handle/123456789/11514| Título : | Characterization of luminescent samarium doped HfO2 coatings synthesized by spray pyrolysis technique |
| Palabras clave : | LUMINESCENT PROPERTIES HfO2 COATINGS SPRAY PYROLYSIS |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | IOP PUBLISHING |
| Descripción : | Trivalent samarium (Sm3+) doped hafnium oxide (HfO2) films were deposited using the spray pyrolysis deposition technique. The films were deposited on Corning glass substrates at temperatures ranging from 300 to 550 ◦C using chlorides as raw materials. Films, mostly amorphous, were obtained when deposition temperatures were below 350 ◦C. However, for temperatures higher than 400 ◦C, the films became polycrystalline, presenting the HfO2 monoclinic phase. Scanning electron microscopy of the films revealed a rough surface morphology with spherical particles. Also, electron energy dispersive analysis was performed
on these films. The photoluminescence and cathodoluminescence characteristics of the
HfO2 : SmCl3 films, measured at room temperature, exhibited four main bands centred at 570,610, 652 and 716 nm, which are due to the well-known intra-4f transitions of the Sm3+ ion. Itwas found that the overall emission intensity rose as the deposition temperature was increased.
Furthermore, a concentration quenching of the luminescence intensity was also observed. INVESTIGACION INSTITUTO POLITECNICO NACIONAL Y CONACYT |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11514 |
| Otros identificadores : | J. Phys. D: Appl. Phys. 41 (2008) 015104 (7pp) 0022-3727 http://hdl.handle.net/123456789/1080 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| CHARACTERIZATION OF LUMINESCENT SAMARIUM DOPED HfO2 COATINGS SYNTHESIZED BY SPRAY PYROLYSIS TECHNIQUE.pdf | 31.47 kB | Adobe PDF | Visualizar/Abrir |
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