Publication date: 1st July 2014
Organic and inorganic metal halide perovskites are of interest for their application in high efficiency solar cells. Tin halide perovskites have been reported as light harvesting and high conducting hole transport material for opto-electronic and solar devices. They are an environment friendly alternate to the Pb halide perovskite solar cells, but stability and reactivity of organic and inorganic tin(II) halide perovskites is still not fully understood. In this work we present detailed study on solid state and solution synthesis, characterization and stability study of organic and inorganic tin halides. Recrystallization and grain orientation of Sn and Pb halide perovskites in different polar organic solvents was also studied. As synthesised materials were characterised using X-ray diffraction (XRD), Raman spectroscopy, absorption and emission spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Their application as light absorbing material and as hole transport materials in sensitized solar cells were also investigated. Application of CsSnI3/CsSnBrxI3-x as an alternative for iodide and sulphide electrolytes in CdS-QDSSC was also tested.
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