@article{VollbrechtTokmoldinSunetal.2022,
  author    = {Joachim Vollbrecht and Nurlan Tokmoldin and Bowen Sun and Viktor V. Brus and Safa Shoaee and Dieter Neher},
  title     = {Determination of the charge carrier density in organic solar cells},
  journal   = {Journal of applied physics},
  series    = {a tutorial},
  volume    = {131},
  number    = {22},
  doi       = {10.1063/5.0094955},
  year      = {2022},
}