@ARTICLE{
author={Guo Fei,Li Ning,Fecher Frank W,Gasparini Nicola,Quiroz Cesar Omar Ramirez,Bronnbauer Carina,Hou Yi,Radmilovic Vuk V,Radmilovic Velimir R,Spiecker Erdmann,Forberich Karen,Brabec Christoph J},
year={2015},
title={A generic concept to overcome bandgap limitations for designing highly efficient multi-junction photovoltaic cells},
journal={NATURE COMMUNICATIONS},
volume={6},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Guo Fei,Li Ning,Radmilovic Vuk V,Radmilovic Velimir R,Turbiez Mathieu,Spiecker Erdmann,Forberich Karen,Brabec Christoph J},
year={2015},
title={Fully printed organic tandem solar cells using solution-processed silver nanowires and opaque silver as charge collecting electrodes},
journal={ENERGY & ENVIRONMENTAL SCIENCE},
volume={8},
number={6},
pages={1690-1697},
document_type={Article},
}