Figure 3From: Performance characteristics of polymer photovoltaic solar cells with an additive-incorporated active layerSPM images of P3HT:PCBM films formed using chlorobenzene with different amounts of 1.8-octanedithiol. Chlorobenzene alone. (a), chlorobenzene with 1.5 vol.% of 1.8-octanedithiol (b), chlorobenzene with 3.5 vol.% of 1.8-octanedithiol (c), and 1,2-dichlorobenzene with 5.5 vol.% of 1.8-octanedithiol (d).Back to article page