Enhancing the Efficiency of Polymer Solar Cells by Modifying Buffer Layer with N,N-Dimethylacetamide

Table 1

The performance parameters of solar cell based on P3HT:PCBM with different volume ratios of nitrobenzene added in blend solutions.

Devices	PEDOT:PSS; thickness (nm)	/(mA/cm^2)	/V	FF/%	/(Ω·cm^2)	/(Ω·cm^2)	/%
A	35 ± 1	7.82	0.58	0.52	14.1	328	2.35%
B	32 ± 1	8.52	0.58	0.55	11.2	406	2.63%
C	30 ± 1	9.39	0.58	0.56	10.8	453	3.03%
D	30 ± 1	11.74	0.58	0.55	9.6	496	3.74%
E	31 ± 1	11.18	0.58	0.55	9.8	522	3.55%