Critical kinetic control of non-stoichiometric intermediate phase transformation for efficient perovskite solar cells.

@article{Rong2016CriticalKC,
  title={Critical kinetic control of non-stoichiometric intermediate phase transformation for efficient perovskite solar cells.},
  author={Yaoguang Rong and Swaminathan Venkatesan and Rui Guo and Yanan Wang and Jiming Bao and Wenzhi Li and Zhiyong Fan and Yan Yao},
  journal={Nanoscale},
  year={2016},
  volume={8 26},
  pages={
          12892-9
        }
}
Organometal trihalide perovskites (OTP) have attracted significant attention as a low-cost and high-efficiency solar cell material. Due to the strong coordination between lead iodide (PbI2) and dimethyl sulfoxide (DMSO) solvent, a non-stoichiometric intermediate phase of MA2Pb3I8(DMSO)2 (MA = CH3NH3(+)) usually forms in the one-step deposition method that plays a critical role in attaining high power conversion efficiency. However, the kinetic understanding of how the non-stoichiometric… CONTINUE READING