Synergetic Enhancement of Device Efficiency in Poly(3-hexylthiophene-2,5-diyl)/[6,6]-phenyl C<sub>61</sub> Butyric Acid Methyl Ester Bulk Heterojunction Solar Cells by Glycerol Addition in the Active Layer

<div>Optical microscope images; scale is 100 <i>μ</i>m: (a) pristine P3HT layer unannealed, (b) pristine P3HT layer annealed, (c) P3HT layer with 30 vol% glycerol additive unannealed, and (d) P3HT layer with 30 vol% glycerol additive annealed.</div>

International Journal of Photoenergy

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Figure 5

Figure 5: Synergetic Enhancement of Device Efficiency in Poly(3-hexylthiophene-2,5-diyl)/[6,6]-phenyl C<sub>61</sub> Butyric Acid Methyl Ester Bulk Heterojunction Solar Cells by Glycerol Addition in the Active Layer 

Figure 5 | Synergetic Enhancement of Device Efficiency in Poly(3-hexylthiophene-2,5-diyl)/[6,6]-phenyl C61 Butyric Acid Methyl Ester Bulk Heterojunction Solar Cells by Glycerol Addition in the Active Layer 