Study of Local Structure in Selected Organic–Inorganic Perovskites in the Pm3jm Phase

نویسندگان

  • Richard J. Worhatch
  • HyunJeong Kim
  • Ian P. Swainson
  • André L. Yonkeu
  • Simon J. L. Billinge
چکیده

The local structures of the inorganic component of selected organic–inorganic perovskites (OIPs) are studied by analyzing the X-ray pair distribution function. Whereas the long-range structure of each perovskite is the untilted Pm3jm phase, all the OIPs showed significant internal distortion of the octahedra. Varying the halide has a significant impact on the lattice constant. There is evidence of local lone-pair distortions for certain compositions. The most complex case of disorder appears to be that of CH3NH3SnBr3.

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تاریخ انتشار 2008