The synthesis and characterization of ASnI3 (A = CH3NH3+, HC(NH2)2+) compounds will be presented. These materials consist of a perovskite-type 3D network and behave as medium band gap semiconductors (Eg = 1.20-1.40 eV) with octahedral metal coordination. When doped the compounds also display high electrical conductivity. This combination of properties renders the materials ideal for dye-sensitized solar cell applications.[1] Moreover, CH3NH3SnI3 exhibits intense room temperature photoluminescence (PL) at ~ 970nm and HC(NH2)2SnI3 at ~ 900 nm, a property that can be utilized in Luminescent Solar Concentrators (LSCs). All three properties strongly depend on the synthetic method and are very sensitive to Sn+4 doping level. The synthetic flexibility offered by this reaction system for controlling the isolation of either p- or n-type doped compounds will be discussed. A �hybrid vs. all-inorganic� comparison will also be made in order to highlight the effects of the A cation on the [SnI3]- framework present in the �parent� iodide perovskite CsSnI3.[2] [1] Chung, I.; Lee, B.; He, J.; Chang, R. P. H.; Kanatzidis, M. G. Nature 2012 , 485, 486[2] Chung, I.; Song, J.-H.; Im, J.; Androulakis, J.; Malliakas, C. D.; Li, H.; Freeman, A. J.; Kenney, J. T.; Kanatzidis, M. G. J. Am. Chem. Soc. 2012

Hybrid metal iodide perovskites: Synthesis-dependent optical and charge transport properties

246th National Meeting (2013)

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