Quantifying mobile ions and electronic defects in perovskite-based devices with temperature-dependent capacitance measurements: Frequency vs time domain.

  title={Quantifying mobile ions and electronic defects in perovskite-based devices with temperature-dependent capacitance measurements: Frequency vs time domain.},
  author={Moritz H. Futscher and Mahesh K Gangishetty and Daniel N. Congreve and Bruno Ehrler},
  journal={The Journal of chemical physics},
  volume={152 4},
Perovskites have proven to be a promising candidate for highly efficient solar cells, light-emitting diodes, and x-ray detectors, overcoming limitations of inorganic semiconductors. However, they are notoriously unstable. The main reason for this instability is the migration of mobile ions through the device during operation as they are mixed ionic-electronic conductors. Here, we show how measuring the capacitance in both the frequency and the time domain can be used to study ionic dynamics… 
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