Oxide heterostructures for efficient solar cells.

@article{Assmann2013OxideHF,
  title={Oxide heterostructures for efficient solar cells.},
  author={Elias Assmann and Peter Blaha and Robert Laskowski and Karsten Held and Satoshi Okamoto and Giorgio Sangiovanni},
  journal={Physical review letters},
  year={2013},
  volume={110 7},
  pages={
          078701
        }
}
We propose an unexplored class of absorbing materials for high-efficiency solar cells: heterostructures of transition-metal oxides. In particular, LaVO(3) grown on SrTiO(3) has a direct band gap ∼1.1  eV in the optimal range as well as an internal potential gradient, which can greatly help to separate the photogenerated electron-hole pairs. Furthermore, oxide heterostructures afford the flexibility to combine LaVO(3) with other materials such as LaFeO(3) in order to achieve even higher… 

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