Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1496264 | Optical Materials | 2011 | 4 Pages |
Abstract
Europium-doped La2O3 nanocrystalline powders with sizes in the range of 50–200 nm have been obtained by the modified sol–gel Pechini method. These nanocrystals have been deagglomerated using sonication for 3 h and have been dispersed into a semiconductor P3HT polymeric matrix. We studied and analysed the spectroscopic properties of the trivalent europium in the hexagonal La2O3 nanocrystals dispersed in the polymer. The luminescence spectrum of Eu3+ in these nanocrystals is dominated by the 5D0 → 7F2 transition with a maximum intensity peak located at 626 nm. We observed that P3HT absorbs part of the light emitted by the nanoparticles. These properties look promising for using this material as a down-converter material in solar cells.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M. Méndez, Y. Cesteros, L.F. Marsal, E. Martínez-Ferrero, P. Salagre, P. Formentín, J. Pallarès, M. Aguiló, F. Díaz, J.J. Carvajal,