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Although traditional perovskite solar cells have made tremendous progress in terms of efficiency, the presence of toxic lead has restricted their commercialization. Herein, we report the first example of a facile synthesis and a newly designed highly stable lead free methylammonium bismuth chloride in the form of 1D-polymeric chain based perovskite. The formation of a 1D-polymeric chain with formula [(CH 3 NH 3 ) 3 Bi 2 Cl 9 ] n ( 1 ) has been authenticated by its single crystal X-ray diffraction (SCXRD) studies. The lead free 1 has been employed as an alternative to the traditional CH 3 NH 3 PbX 3 perovskite with an excellent open circuit voltage of 430 mV.
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Ahmad et al. (2018) studied this question.
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