Probing the ionic defect landscape in halide perovskite solar cells

@article{Reichert2020ProbingTI,
  title={Probing the ionic defect landscape in halide perovskite solar cells},
  author={S. Reichert and Qingzhi An and Y. Woo and A. Walsh and Yana Vaynzof and C. Deibel},
  journal={Nature Communications},
  year={2020},
  volume={11}
}
Point defects in metal halide perovskites play a critical role in determining their properties and optoelectronic performance; however, many open questions remain unanswered. In this work, we apply impedance spectroscopy and deep-level transient spectroscopy to characterize the ionic defect landscape in methylammonium lead triiodide (MAPbI3) perovskites in which defects were purposely introduced by fractionally changing the precursor stoichiometry. Our results highlight the profound influence… Expand
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