Cited 20 time in webofscience Cited 21 time in scopus

Effects of a perfluorinated compound as an additive on the power conversion efficiencies of polymer solar cells

Title
Effects of a perfluorinated compound as an additive on the power conversion efficiencies of polymer solar cells
Authors
Jeong, S[Jeong, Seonju]Woo, SH[Woo, Sung-Ho]Lyu, HK[Lyu, Hong-Kun]Han, YS[Han, Yoon Soo]
DGIST Authors
Jeong, S[Jeong, Seonju]; Woo, SH[Woo, Sung-Ho]Lyu, HK[Lyu, Hong-Kun]
Issue Date
2011-07
Citation
Solar Energy Materials and Solar Cells, 95(7), 1908-1914
Type
Article
Article Type
Article
Keywords
AbsorbancesAdditivesBenzonitrilesBlend FilmsButyric AcidConversion EfficiencyCrystal SizeDepth ProfilingEstersFill-FactorFluorineFluorine AtomsHole MobilityMethyl EstersP3HTPCBMPerfluorinated CompoundPerfluorinated CompoundsPoly (3-Hexylthiophene)Polymer Solar Cells (PSCs)PolymersPower Conversion EfficienciesSolar CellsTrifluoromethylUV-Visible Absorption SpectrumX Ray MeasurementsXPS Depth Profiling
ISSN
0927-0248
Abstract
A perfluorinated compound, 4-amino-2-(trifluoromethyl)benzonitrile (ATMB), was applied as an additive to polymer solar cells (PSCs) with P3HT [poly(3-hexylthiophene)]:PCBM [[6,6]-phenyl-C 61-butyric acid methyl ester] blend films. The addition of 6 wt% ATMB to a P3HT:PCBM layer led to an increased power conversion efficiency of 5.03% due to the enhanced short circuit current and fill factor when compared with that of the reference cell without an additive. On the other hand, the devices with 4-aminobenzonitrile as an additive, not containing fluorine atoms in the molecule, displayed lower PCEs than that of the reference cell. The UVvisible absorption spectra, X-ray measurements and carrier mobility studies revealed that ATMB facilitated ordering of the P3HT chains, resulting in higher absorbance, larger crystal size of P3HT and enhanced hole mobility. XPS depth profiling measurements also showed that the additive molecules were predominantly positioned in the range of 25 nm under the surface of the P3HT:PCBM film, leading to improved fill factor. © 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/3447
DOI
10.1016/j.solmat.2011.02.019
Publisher
Elsevier B.V.
Related Researcher
Files:
There are no files associated with this item.
Collection:
Division of IoT∙Robotics Convergence Research1. Journal Articles
Intelligent Devices and Systems Research Group1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE