Electrophoretic Codeposition of MoO_x/MoS₂ Thin Film for Platinum-Free Counter Electrode in Quantum Dot Solar Cells

Table 1

Cathodic peak current density- (A.m^-2) and peak potential (vs. Ag/AgCl) of MoS₂ thin films and Pt electrode measured in polysulfide solution containing 5.00 mM sulfur, 20.0 mM Na₂S, and 0.100 M KCl at scan rate of 10 mV.s^-1.

		t (min)
		5	10	15	20	25
U (V)	15	N/A	0.81; -0.67 V	6.0; -0.74 V	2.0; -0.67 V	N/A
	20	13; -0.82 V	22; -0.72 V	33; -0.84 V	5.1; -0.67 V	N/A
	25	17; -0.82 V	47; -0.84 V	6.4; -0.74 V	N/A	N/A
	30	11; -0.74 V	1.5; -0.80 V	12; -0.78 V	N/A	N/A
Pt electrode (area 0.13 cm^2)				0.21; at -0.57V

N/A means not available, indicating that there is no detected cathodic peak.