Naslov
Rare-earth-activated glasses for solar energy conversion

Autori
Alombert Goget, Guillaume ; Ristic, Davor ; Dieudonne, Belto ; Moser, Enrico ; Varas, Stefano ; Berneschi, Simone ; Ivanda, Mile ; Monteil, A. ; Arfuso Duverger, Claire ; Righini, Giancalo Cesare ; Boulard, Brigitte ; Ferrari, Maurizio

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Transparent Optical Networks (ICTON), 2011 13th International Conference on / - , 2011, 1-4

Skup
ICTON 2011

Mjesto i datum
Stockholm, Švedska, 26.06.2011. - 30.06.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ceramics; Energy exchange; Glass; Ions; Photonics; Photovoltaic cells

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA