Rare-earth-activated glasses for solar energy conversion

TitreRare-earth-activated glasses for solar energy conversion
Type de publicationCommunication
TypeCommunication avec actes dans un congrès
Année2011
LangueAnglais
Date du colloque2011
Titre du colloque13th International Conference on Transparent Optical Networks (ICTON)
AuteurAlombert-Goget, G., Ristic, D., Dieudonné, B., Moser, Enrico, Varas, S., Berneschi, S., Ivanda, M., Monteil, André , Duverger, C.A., Righini, Giancarlo C., Boulard, Brigitte, Ferrari, Maurizio
PaysSuède
VilleStockholm
Mots-clésaluminium compounds, Ceramics, down-conversion process, Energy exchange, energy transfer, energy transfer efficiency, fluoride glass, fluoride glasses, gallium compounds, Glass, glass ceramic planar waveguides, glass ceramics, Glass-ceramic waveguides, hafnium compounds, Ions, lanthanum compounds, light concentrators, molar composition, optical fabrication, optical glass, optical planar waveguides, Photonics, photovoltaic cells, praseodymium, Quantum cutting, Rare earth, rare-earth-activated glasses, Silica-Hafnia, SiO2-HfO2:Tb,Yb, sol-gel process, sol-gel processing, Solar cells, solar energy concentrators, solar energy conversion, terbium, ytterbium, zirconium compounds, ZrF4-LaF3-AlF3-GaF3:Pr,Yb
Résumé en anglais

The solar cells efficiency may be improved by better exploitation of the solar spectrum, making use of the down-conversion mechanism, where one high energy photon is cut into two low energy photons. The choice of the matrix is a crucial point to obtain an efficient down-conversion process with rare-earth ions. When energy transfer between rare earth ions is used to activate this process, high emission and absorption cross sections as well as low cut-off phonon energy are mandatory. In this paper we present some results concerning 70SiO2-30HfO2 glass ceramic planar waveguides co-activated by Tb3+/Yb3+ ions, fabricated by sol gel route using a top-down approach, and a bulk fluoride glass of molar composition 70ZrF4 23.5LaF3 0.5AlF3 6GaF3 co-activated by Pr3+/Yb3+ ion. Attention is focused on the assessment of the energy transfer efficiency between the two couples of rare earth ions in the different hosts.

Notes

Date du colloque : 06/2011

URL de la noticehttp://okina.univ-angers.fr/publications/ua5230
DOI10.1109/ICTON.2011.5971092
Lien vers le document en ligne

http://dx.doi.org/10.1109/ICTON.2011.5971092