Solvent annealing of perovskite-induced crystal growth for photovoltaic-device efficiency enhancement.

  title={Solvent annealing of perovskite-induced crystal growth for photovoltaic-device efficiency enhancement.},
  author={Zhengguo Xiao and Qingfeng Dong and Cheng Bi and Yuchuan Shao and Yongbo Yuan and Jinsong Huang},
  journal={Advanced materials},
  volume={26 37},
Solvent-annealing is found to be an effective method to increase the grain size and carrier diffusion lengths of trihalide perovskite materials. The carrier diffusion length of MAPbI3 is increased to over 1 μm. The efficiency remains above 14.5% when the MAPbI3 thickness changes from 250 nm to 1 μm, with the highest efficiency reaching 15.6%. 
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