Enhanced Power Conversion Efficiency of Polymer Solar Cells Through the Use of 4-Fluorobenzonitrile as an Additive
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- Enhanced Power Conversion Efficiency of Polymer Solar Cells Through the Use of 4-Fluorobenzonitrile as an Additive
- Woo, Sungho; Kwon, Hyeok Yong; Jeong, Seonju; Lee, Sang Ju; Park, Lee Soon; Kim, Youngkyoo; Han, Yoon Soo
- PHOTOVOLTAIC CELLS; INTERPENETRATING NETWORK; MORPHOLOGY; POLY(3-HEXYLTHIOPHENE); METHANOFULLERENES; PERFORMANCE; FILMS; 4-Fluorobenzonitrile; Additive; Thermal Annealing; Polymer Solar Cell; P3HT; PCBM
- Issue Date
- AMER SCIENTIFIC PUBLISHERS
- JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS, v.6, no.3, pp.338 - 342
- In this work, 4-fluorobenzonitrile (4-FBN) was introduced as a new additive compound into the photoactive layer of a polymer solar cell (PSC) based on a poly(3-hexylthiophene):[6,6]-phenyl-C-61-butyric acid methyl ester (P3HT:PCBM) blend system. The incorporation of 4-FBN allowed both increased light absorption (pi-pi* transition efficiency) in the visible region and enhanced X-ray diffraction peak of (100), which is attributed to the enhanced crystallinity of the P3HT chains, leading to a higher short-circuit current (J(sc)) and fill factor (FF). Thus, the overall efficiency of the annealed PSCs was considerably improved from 3.57% (without 4-FBN) to 4.41% (with 4-FBN)
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