Abstract This paper introduced the fabrication and characterization of a new organic–inorganic perovskite hybrid film basing on the pseudohalide SCN−. Well crystallized layered (CH3NH3)2Pb(SCN)2I2 hybrid films with high crystallinity and… Click to show full abstract
Abstract This paper introduced the fabrication and characterization of a new organic–inorganic perovskite hybrid film basing on the pseudohalide SCN−. Well crystallized layered (CH3NH3)2Pb(SCN)2I2 hybrid films with high crystallinity and compact surface morphology were obtained by in-situ spin-coating from a tetrahydrofuran precursor combining CH3NH3I, and Pb(SCN)2 in stoichiometric ratios. Solar cells utilizing the (CH3NH3)2Pb(SCN)2I2 films as light absorbing material were fabricated to study their photovoltaic performance. The effect of substrate (FTO/BL-TiO2 and FTO/BL-TiO2/Meso-TiO2) on the performance of (CH3NH3)2Pb(SCN)2I2 perovskite solar cells were investigated. Results showed that higher performance of the devices was obtained when Meso-TiO2 was used as substrate, which was due to the enhanced light harvesting by the infiltrated perovskite and reduced charge recombination at the perovskites/TiO2 interface.
Journal Title: Polyhedron
Year Published: 2018
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