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.
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]
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10.1126/science.286.5441.945.
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^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.
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^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.
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