Effect of Modulating Spin-Coating Rate of TiO₂ Precursor for Mesoporous Layer on Hysteresis of Solar Cells with Polar CH₃NH₃PbI₃ Perovskite Thin Film

Table 1

Solar cell performance parameters w/o mp-TiO₂ layer or with the spin-coating rates of the mp-TiO₂ precursor for 3000 rpm and 1500 rpm.

	HI (0.8)	(mA cm^−2)	(mV)	FF	PCE (%)
RS (planar)	0.611	3.01	918	0.37	1.03
FS (planar)		3.21	866	0.11	0.31
RS (3000 rpm)	0.255	9.07	813	0.65	4.82
FS (3000 rpm)		8.70	804	0.49	3.44
RS (1500 rpm)	0.181	10.01	847	0.58	4.93
FS (1500 rpm)		9.77	826	0.46	3.73