| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1263620 | Organic Electronics | 2015 | 7 Pages |
•The effect of organic polar solvent on the properties of P3HT:PCBM has been explored.•The morphology and the electrical properties can be controlled via organic polar solvent.•A favorable phase separation is obtained through organic polar solvent.
We investigated the effect of organic polar solvent on the properties of [6,6]-phenyl-C71-butyric acid methyl ester (PCBM) films and poly(3-hexylthiophene) (P3HT):PCBM blend films employed as active layer in organic photovoltaic. The nanoscale morphology and the electrical characteristics of the P3HT:PCBM film can be controlled through organic polar solvent exposure, which exhibited with a short-circuit current density of 8.64 mA/cm2, an open circuit voltage of 0.63 V, and a power conversion efficiency of 3.29% under AM 1.5 illumination with a light intensity of 100 mW/cm2. By exposing the active layer films to organic polar solvent a favorable phase separation in the P3HT:PCBM films is obtained. The improved power conversion efficiency can be to the high conductivity and high surface area of the P3HT:PCBM layer treated with organic polar solvent.
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