@article{BaumannTvingstedtHeiberetal.2014,
  author    = {A. Baumann and K. Tvingstedt and M. C. Heiber and S. V{\"a}th and C. Momblona and H. J. Bolink and V. Dyakonov},
  title     = {Persistent photovoltage in methylammonium lead iodide perovskite solar cells},
  journal   = {APL Materials},
  volume    = {2},
  number    = {8},
  doi       = {10.1063/1.4885255},
  year      = {2014},
}