Understanding the role of organic polar solvent induced nanoscale morphology and electrical evolutions of P3HT:PCBM composite film

作者：Lee Seung Joo; Kim Hyeong Pil; Yusoff Abd Rashid bin Mohd; Jang Jin

来源：Organic Electronics, 2015, 25: 50-56.

DOI：10.1016/j.orgel.2015.06.019

• Organic polar solvent
• Phase separation
• High conductivity
• High surface area

We investigated the effect of organic polar solvent on the properties of [6,6]-phenyl-C-71-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/cm(2), 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/cm(2). 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.

• 出版日期2015-10