The power conversion efficiency (eta) of a dye solar cell (DSC) with a 13 mu m thick TiO2 layer increases with solar AM1.5 light's angle of incidence by 10% at 55 degrees +/- 5 degrees and then decreases at higher angles due to Fresnel reflection at the front air/glass interface. For cells with thin TiO2 (3 mu m), the enhancement in eta is substantially larger (16%). We show, also through spectral quantum efficiency measurements, that the angular enhancement for thin cells is mainly due to optical path lengthening, quantifying the relevant parameters useful for photon management strategies and for understanding the productivity of DSC modules outdoors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3663973]
Angular response of dye solar cells to solar and spectrally resolved light / Daniele, D'Ercole; Dominici, Lorenzo; Thomas M., Brown; Michelotti, Francesco; Andrea, Reale; Aldo Di, Carlo. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 99:21(2011), pp. 213301-213301-3. [10.1063/1.3663973]
Angular response of dye solar cells to solar and spectrally resolved light
DOMINICI, Lorenzo;MICHELOTTI, Francesco;
2011
Abstract
The power conversion efficiency (eta) of a dye solar cell (DSC) with a 13 mu m thick TiO2 layer increases with solar AM1.5 light's angle of incidence by 10% at 55 degrees +/- 5 degrees and then decreases at higher angles due to Fresnel reflection at the front air/glass interface. For cells with thin TiO2 (3 mu m), the enhancement in eta is substantially larger (16%). We show, also through spectral quantum efficiency measurements, that the angular enhancement for thin cells is mainly due to optical path lengthening, quantifying the relevant parameters useful for photon management strategies and for understanding the productivity of DSC modules outdoors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3663973]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
