Abstract
Organic-inorganic hybrid perovskites attract attentions because of their unique electro-optical properties which are expected to be applied to various devices. The perovskite compounds are generally prepared from precursor solutions consisting of two materials, AX and BX2 for ABX3. Generally, methylammonium lead triiodide (MAPbI3) perovskite is formed from the precursor solution consisting of methylammonium iodide (MAI) and lead iodide (PbI2). In this report, we select Pb(-S-C(S)-OR)2 (lead xanthate, abbreviated as Pb(XT)2) as the perovskite precursor instead of PbI2. We found that the precursor solutions consisting of the MAI and the Pb(XT)2 give nanocomposites consisting of MAPbI3 and PbS nanomaterials including PbS quantum dot without changing the MAPbI3 bandgap. In this report, nanocomposites prepared from precursors consisting of Pb(XT)2/MAI with various ratios are analysed by using XRD, XPS, TG-DTA, TEM and UV/VIS spectroscopy.
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