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Effects of n-type perylene derivative as an additive on the power conversion efficiencies of polymer solar cells
- Effects of n-type perylene derivative as an additive on the power conversion efficiencies of polymer solar cells
- Jeong, S[Jeong, Seonju]; Han, YS[Han, Yoon Soo]; Kwon, Y[Kwon, Younghwan]; Choi, MS[Choi, Myung-Seok]; Cho, G[Cho, Gwijeong]; Kim, KS[Kim, Ki-Soo]; Kim, Y[Kim, Youngkyoo]
- DGIST Authors
- Jeong, S[Jeong, Seonju]; Han, YS[Han, Yoon Soo]
- Issue Date
- Synthetic Metals, 160(19-20), 2109-2115
- Article Type
- Acids; Additive; Additives; Blend Films; Butyric Acids; Conversion Efficiency; Electron Mobility; Esters; Exciton Dissociation; Fatty Acids; Methyl Esters; P3HT; PCBM; Perylene Derivative; Perylene Derivatives; Perylenes; Poly (3-Hexylthiophene); Polymer Solar Cell (PSC); Polymer Solar Cells (PSCs); Polymers; Power Conversion Efficiencies; Solar Cells; Tetrakis; X Ray Measurements
- The synthesized n-type perylene derivative, N,N′-bis-(5- bromopyridine-2-yl)-1,6,7,12-tetrakis(4-n-butoxyphenoxy)-3,4,9,10-perylene tetracarboxydiimide (PPyB), was applied to polymer solar cells as an additive in P3HT [poly(3-hexylthiophene)]:PCBM [[6,6]-phenyl C61-butyric acid methyl ester] blend films. The addition of 1 wt% PPyB into a P3HT:PCBM layer led to a considerable improvement of over 70% in power conversion efficiency due to the enhanced short circuit current when compared with that of reference cell without an additive. Photoluminescence, X-ray measurements and carrier mobility studies revealed that the perylene additives increased electron mobility and contributed to more effective exciton dissociation due to the presence of the additive, PPyB, in the interfaces between the P3HT and PCBM domains. © 2010 Elsevier B.V. All rights reserved.
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