Cation and anion substitutions in hybrid perovskites: solubility limits and phase stabilizing effects

• DOI: 10.48550/arxiv.1810.07108
• Publication Date: 2018-01-01
• Authors: Frederike Lehmann; Silvia Binet; Alexandra Franz; Andreas Taubert; Susan Schorr
• Keywords: Formamidinium

Organic or inorganic (A) metal (M) halide (X) perovskites (AMX3) are semiconductor materials setting the basis for development of highly efficient, low-cost and multijunction solar energy conversion devices. The best efficiencies nowadays obtained with mixed compositions containing methylammonium, formamidinium, Cs Rb as well iodine, bromine chlorine anions. understanding fundamental properties such crystal structure its effect on band gap, their phase stability is essential. In this systematic study X-ray diffraction photoluminescense spectroscopy were applied to evaluate structural optoelectronic hybrid compositions.