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. 2016 Jul 28;6:30759. doi: 10.1038/srep30759

Table 1. Average values of perovskite photovoltaic cell performances and their diode characteristics according to various hole transport layers.

HTL	Performances				Diode characteristics
	J_sc (mA·cm⁻²)	V_oc (V)	FF	PCE (%)	R_s (Ω·cm²)	R_sh (10² Ω·cm²)	n	J_s (10⁻⁸ mA·cm⁻²)
	Ave. (Std.)	Ave. (Std.)	Ave. (Std.)	Ave. (Std.)	R_s (Ω·cm²)	R_sh (10² Ω·cm²)	n	J_s (10⁻⁸ mA·cm⁻²)
PEDOT:PSS	19.3 (0.5)	0.90 (0.01)	0.67 (0.02)	11.5 (0.3)	4.5	5.11	1.76	23.8
NiO 25 nm	11.4 (1.0)	0.93 (0.02)	0.67 (0.01)	7.3 (0.5)	6.4	4.46
NiO 45 nm	19.0 (1.0)	1.03 (0.01)	0.69 (0.04)	13.4 (1.1)	7.0	6.31	1.88	9.47
NiO 65 nm	14.3 (1.4)	0.99 (0.01)	0.60 (0.03)	8.6 (0.2)	13.3	9.16

R_s: series resistance.

R_sh: shunt resistance.

n: diode ideality factor.

J_s: dark saturation current density. Numbers in parentheses are standard deviations.