Methylammonium tin halide

Methylammonium tin halides are solid compounds with perovskite structure and a chemical formula of CH3NH3SnX3, where X = I, Br or Cl. They are promising lead-free alternatives to lead perovskites as photoactive semiconductor materials. Tin-based perovskites have shown excellent mobility in transistors [1] which gives them an opportunity to be explored more for solar cell applications.

CH3NH3SnX3 crystal structure

Tin halide perovskites, despite being regarded as semiconductors, often display metallic-like behavior due to the inadvertent and/or spontaneous hole carrier doping resulting from the easy oxidation of Sn2+ to Sn4+.[2] [3]

See also

References
  1. Kagan, Cherie R.; Mitzi, David B.; Dimitrakopoulos, Christos D. (1999). "Organic-inorganic hybrid materials as semiconducting channels in thin-film field-effect transistors". Science. 286 (5441): 945–947. doi:10.1126/science.286.5441.945. PMID 10542146.
  2. Takahashi, Yukari; et al. (2011). "Charge-transport in tin-iodide perovskite CH3NH3SnX3: origin of high conductivity". Dalton Transactions. 40 (20): 5563–5568. doi:10.1039/C0DT01601B. hdl:2115/48597. PMID 21494720.
  3. Stoumpos, Constantinos C.; Kanatzidis, Mercouri G. (2015). "The renaissance of halide perovskites and their evolution as emerging semiconductors". Accounts of Chemical Research. 48 (10): 2791–2802. doi:10.1021/acs.accounts.5b00229. PMID 26350149.
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