Characterization of luminescent samarium doped HfO2 coatings synthesized by spray pyrolysis technique

Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/11613

Título :	Characterization of luminescent samarium doped HfO2 coatings synthesized by spray pyrolysis technique
Palabras clave :	HAFNIUM OXIDE SAMARIUM
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. It was found that the overall emission intensity rose as the deposition temperature was increased. Furthermore, a concentration quenching of the luminescence intensity was also observed.
URI :	http://www.repositoriodigital.ipn.mx/handle/123456789/11613
Otros identificadores :	http://hdl.handle.net/123456789/1145
Aparece en las colecciones:	Doctorado

Ficheros en este ítem:

Fichero	Descripción	Tamaño	Formato
RESUMEN HfO2.docx		12.87 kB	Microsoft Word XML	Visualizar/Abrir

El Instituto Politécnico Nacional