New robust luminescent solar concentrators were produced by growing Eu(TTA)3phen -containing parylene thin films on PMMA slabs through a novel co- deposition process. The optical measurements demonstrated that Eu(TTA)3phen -containing parylene exhibits higher absorption than the conventional Eu(TTA)3phen films and the luminescence peaks characteristic of Eu(TTA)3phen compound. This indicates that the Eu complex is not affected by the matrix interaction thus maintaining its extremely large Stokes shift. Moreover the parylene matrix improves the luminescence intensity of the films: in fact, under the same absorption these films show a luminescence intensity more than two times higher than standard Eu(TTA)3phen ones. The current-voltage (I-V) measurements show that the Eu(TTA)3phen -containing parylene LSCs produce a current density more than twice as high as conventional Eu(TTA)3phen ones with the same Eu(TTA)3phen quantity and that their efficiency decreases more than ten times slower than organic-based LSCs at increasing illuminating area, thus highlighting the feasibility of developing large size LSCs.
Novel Hybrid Thin Film Luminescent Solar Concentrators
TONEZZER, Michele;VINCENZI, Donato;BARONI, Nicolo';POZZETTI, Luana;BARICORDI, Stefano;GUIDI, Vincenzo;
2013
Abstract
New robust luminescent solar concentrators were produced by growing Eu(TTA)3phen -containing parylene thin films on PMMA slabs through a novel co- deposition process. The optical measurements demonstrated that Eu(TTA)3phen -containing parylene exhibits higher absorption than the conventional Eu(TTA)3phen films and the luminescence peaks characteristic of Eu(TTA)3phen compound. This indicates that the Eu complex is not affected by the matrix interaction thus maintaining its extremely large Stokes shift. Moreover the parylene matrix improves the luminescence intensity of the films: in fact, under the same absorption these films show a luminescence intensity more than two times higher than standard Eu(TTA)3phen ones. The current-voltage (I-V) measurements show that the Eu(TTA)3phen -containing parylene LSCs produce a current density more than twice as high as conventional Eu(TTA)3phen ones with the same Eu(TTA)3phen quantity and that their efficiency decreases more than ten times slower than organic-based LSCs at increasing illuminating area, thus highlighting the feasibility of developing large size LSCs.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
