V M Goldschmidt 1926 tolerance factor t = (r_A + r_X)/sqrt(2)(r_B + r_X); 0.8 < t < 1.0 cubic perovskite; basis of CaTiO3 to MAPbI3 PSC photovoltaics.
V M Goldschmidt 1926 tolerance factor t = (r_A + r_X)/sqrt(2)(r_B + r_X); 0.8 < t < 1.0 cubic perovskite; basis of CaTiO3 to MAPbI3 PSC photovoltaics.