A Suitable Polysulfide Electrolyte for CdSe Quantum Dot-Sensitized Solar Cells

Table 1

Performance parameters of CdSe QDSSCs with 0.1 M Na₂S electrolytes having various solvent ratio.

Solution composition of the electrolyte	𝐽SC (mA/cm^2)	𝑉OC (V)	Fill factor (%)	Efficiency, 𝜂 (%)
Methanol 100%	0.42	0.305	16.0	0.02
Ethanol 100%	2.09	0.375	27.0	0.21
Ethanol : water = 9 : 1	2.21	0.365	33.0	0.27
Ethanol : water = 8 : 2	2.07	0.405	37.0	0.31
Ethanol : water = 7 : 3	1.97	0.350	27.0	0.19
Ethanol : water = 6 : 4	0.65	0.340	26.0	0.06
Ethanol : water = 1 : 1	0.81	0.360	35.0	0.10
Ethanol : water = 4 : 6	0.85	0.345	29.0	0.09
Ethanol : water = 3 : 7	0.82	0.340	14.0	0.04
Ethanol : water = 2 : 8	0.62	0.360	22.0	0.05
Ethanol : water = 1 : 9	1.21	0.340	24.0	0.10
Water 100%	2.09	0.395	23.0	0.19