Panchromatic response is essential to increase the light-harvesting efficiency in solar conversion systems. Herein we show increased light harvesting from using multiple energy relay dyes inside dye-sensitized solar cells. Additional photoresponse from 400-590 nm matching the optical window of the zinc phthalocyanine sensitizer was observed due to Förster resonance energy transfer (FRET) from the two energy relay dyes to the sensitizing dye. The complementary absorption spectra of the energy relay dyes and high excitation transfer efficiencies result in a 35% increase in photovoltaic performance. © 2011 Wiley-VCH Verlag GmbH& Co. KGaA.
|Original language||English (US)|
|Number of pages||5|
|State||Published - Jan 5 2011|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1–015–21
Acknowledgements: The EPFL-affiliated authors thank the Swiss National Science Foundation for Financial Support. E. T. Hoke was funded by the Fannie and John Hertz Foundation. M. Grätzel and T. Torres were supported by EU Project ROBUST DSC, FP7-Energy-2007–1-RTD. This publication is partially based on work supported by the Center for Advanced Molecular Photovoltaics (Award No KUS-C1–015–21), made by King Abdullah University of Science and Technology (KAUST) gratefully acknowledged by M. Grätzel and M. McGehee. Financial support by the MEC, Spain (CTQ2008–00418/BQU, CONSOLIDER-INGENIO 2010 CDS 2007–00010, PLE2009–0070), and CAM (MADRISOLAR-2, S2009/PPQ/1533), is gratefully acknowledged by T. Torres.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.