Cited 22 time in webofscience Cited 23 time in scopus

Effects of Nematic Liquid Crystal Additives on the Performance of Polymer Solar Cells

Title
Effects of Nematic Liquid Crystal Additives on the Performance of Polymer Solar Cells
Authors
Jeong, S[Jeong, Seonju]Kwon, Y[Kwon, Younghwan]Choi, BD[Choi, Byeong-Dae]Kwak, G[Kwak, Giseop]Han, YS[Han, Yoon Soo]
DGIST Authors
Jeong, S[Jeong, Seonju]; Choi, BD[Choi, Byeong-Dae]; Han, YS[Han, Yoon Soo]
Issue Date
2010-12-01
Citation
Macromolecular Chemistry and Physics, 211(23), 2474-2479
Type
Article
Article Type
Article
Keywords
AbsorbancesAdditiveAdditivesAnnealingBlend FilmsConversion EfficiencyCrystallinitiesCrystalsLiquid CrystalsLiquidsNematic Liquid CrystalNematic Liquid CrystalsNematic LiquidsP3HTPC 61BMPolymer Solar Cell (PSC)Polymer Solar Cells (PSCs)PolymersPost-Thermal AnnealingPower Conversion EfficienciesReference DevicesSolar Cells
ISSN
1022-1352
Abstract
Nematic liquid crystals (NLCs), 4-cyano-4′-pentylbiphenyl and 4-cyano-4′-octylbiphenyl, were applied as additives to polymer solar cells with P3HT:PC 61BM blend films. The incorporation of NLC additives led to a higher absorbance of the blend film, a higher crystallinity of P3HT, closer P3HT chains, larger PC 61BM domains and enhanced hole/electron mobilities even without post-thermal annealing. The non-annealed PSC with 4 wt.-% 8CB additives showed an increase in all parameters, resulting in a power conversion efficiency of 3.72% compared to 2.14% of the reference device without NLC additives. Nematic liquid crystals (NLCs) are applied as additives to polymer solar cells consisting of P3HT:PC 61BM blend films. The incorporation of NLC additives leads to a considerable improvement in power conversion efficiency even without post-thermal annealing, due to a higher absorbance of the blend film, a higher crystallinity of P3HT, closer P3HT chains, larger PC 61BM domains and enhanced hole/electron mobilities. Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
http://hdl.handle.net/20.500.11750/3493
DOI
10.1002/macp.201000379
Publisher
Wiley-VCH Verlag
Related Researcher
Files:
There are no files associated with this item.
Collection:
Intelligent Devices and Systems Research Group1. Journal Articles
Division of Nano∙Energy Convergence Research1. Journal Articles


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