Efficient homo-tandem and triple-junction polymer solar cells are constructed by stacking identical subcells composed of the wide-bandgap polymer PBDTTPD, achieving power conversion efficiencies >8% paralleled by open-circuit voltages >1.8 V. The high-voltage homo-tandem is used to demonstrate PV-driven electrochemical water splitting with an estimated solar-to-hydrogen conversion efficiency of ≈6%. © 2016 WILEY-VCH Verlag GmbH & Co.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors acknowledge financial support under Baseline Research Funding from King Abdullah University of Science and Technology (KAUST). Part of this work was supported by the Solar and Photovoltaic Energy Research Center (SPERC) at KAUST. Y.G. thanks Tatsuya Shinagawa for assisting in the water splitting study.