Polarization Dependence of Water Adsorption to CH3NH3PbI3 (001) Surfaces.

  title={Polarization Dependence of Water Adsorption to CH3NH3PbI3 (001) Surfaces.},
  author={Nathan Z. Koocher and Diomedes Saldana-Greco and Fenggong Wang and Shi Liu and Andrew M Rappe},
  journal={The journal of physical chemistry letters},
  volume={6 21},
The instability of organometal halide perovskites when in contact with water is a serious challenge to their feasibility as solar cell materials. Although studies of moisture exposure have been conducted, an atomistic understanding of the degradation mechanism is required. Toward this goal, we study the interaction of water with the (001) surfaces of CH3NH3PbI3 under low and high water concentrations using density functional theory. We find that water adsorption is heavily influenced by the… CONTINUE READING

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