El Instituto Politécnico Nacional
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http://repositoriodigital.ipn.mx/handle/123456789/10679Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | García Macedo, Jorge | - |
| dc.creator | Valverde Aguilar, Guadalupe | - |
| dc.date | 2012-03-16T16:31:14Z | - |
| dc.date | 2012-03-16T16:31:14Z | - |
| dc.date | 2010 | - |
| dc.date.accessioned | 2013-01-16T09:01:41Z | - |
| dc.date.available | 2013-01-16T09:01:41Z | - |
| dc.date.issued | 2013-01-16 | - |
| dc.identifier | 0277-786X | - |
| dc.identifier | http://hdl.handle.net/123456789/161 | - |
| dc.identifier.uri | http://www.repositoriodigital.ipn.mx/handle/123456789/10679 | - |
| dc.description | In this work the Eu3+ ion was used as optical probe, by considering its hypersensitive transitions to follow changes in the local environment. Eu3+ ions were incorporated into gel via dissolution of soluble species into the initial precursor TiO2 sol. The TiO2/Eu3+ films were spin-coated on glass wafers. A spectroscopic study of the Eu3+ impurity in function of the heat treatment provided to the TiO2 matrix was done. Anatase nanophase was obtained after heat treatment at 600°C for 1h and it was detected by X-ray diffraction. An absorption band located in the UV region between 300-360 nm is due to the band gap of the titania host. Results of emission and excitation spectra at room temperature of Eu3+ inserted in the TiO2 matrix are presented. The ratio of the 7F2/7F1 transitions was calculated. The evolution of this ratio was interpreted in terms of the Eu3+ symmetry site change when the nanocrystalline TiO2 phase was obtained. | - |
| dc.language | en | - |
| dc.publisher | SPIE Proceedings | - |
| dc.subject | luminescence | - |
| dc.subject | rare earth | - |
| dc.title | Eu3+ as optical probe of the structure in amorphous and nanocrystalline TiO2 films prepared by sol-gel method | - |
| dc.type | Article | - |
| Aparece en las colecciones: | Doctorado | |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 7755-02 TiO2_Eu3+ 2010.pdf | 1.62 MB | Adobe PDF | Visualizar/Abrir |
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