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Improved Photovoltaic Properties of Polymer Solar Cells with a Phenyl Compound as an Additive
- Improved Photovoltaic Properties of Polymer Solar Cells with a Phenyl Compound as an Additive
- Jeong, S[Jeong, Seonju]; Woo, SH[Woo, Sung-Ho]; Lyu, HK[Lyu, Hong-Kun]; Kim, C[Kim, Cham]; Kim, WH[Kim, Wook Hyun]; Han, YS[Han, Yoon Soo]
- DGIST Authors
- Jeong, S[Jeong, Seonju]; Woo, SH[Woo, Sung-Ho]; Lyu, HK[Lyu, Hong-Kun]; Kim, C[Kim, Cham]; Kim, WH[Kim, Wook Hyun]
- Issue Date
- Journal of Nanoscience and Nanotechnology, 14(8), 5988-5992
- Article Type
- [6,6]-Phenyl-C61-Butyric Acid Methyl Esters; Additives; Chemistry; Electron-Withdrawing Substituents; Hole Mobility; P3HT; PCBM; Phenyl Compound; Phenyl Compounds; Polymer; Polymer Solar Cells (PSCs); Polymers; Power Conversion Efficiencies; Solar Cells; Solar Energy; UV-Visible Absorption Spectrum
- A phenyl compound with electron withdrawing substituents, 3-fluoro-4-cyanophenol (FCP), was used as an additive in polymer solar cells with a P3HT [poly(3-hexyl thiophene)]:PCBM [[6,6]-phenyl-C61-butyric acid methyl ester] blend film. Under simulated solar illumination of AM 1.5 (100 mW/cm 2), the devices fabricated using a P3HT:PCBM (1:0.9 w:w) layer blended with 5 wt% of FCP achieved an enhanced power conversion efficiency (PCE) of 4.8% due to the improved short circuit current and fill factor, as compared to reference cells with PCE = 4.1%. UV-visible absorption spectra, X-ray measurements and carrier mobility studies revealed that FCP facilitated the ordering of the P3HT chains, resulting in higher absorbance, larger crystal size, closer packing and enhanced hole mobility. Copyright © 2014 American Scientific Publishers.
- American Scientific Publishers
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