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Enhanced Performance of Polymer Solar Cells with a Fluorocyanophenyl Compound as an Additive

Title
Enhanced Performance of Polymer Solar Cells with a Fluorocyanophenyl Compound as an Additive
Authors
Jeong, S[Jeong, Seonju]Woo, S[Woo, Sungho]Lyu, HK[Lyu, Hong-Kun]Kim, WH[Kim, Wook Hyun]Sung, SJ[Sung, Shi-Joon]Han, YS[Han, Yoon Soo]
DGIST Authors
Woo, S[Woo, Sungho]Lyu, HK[Lyu, Hong-Kun]; Kim, WH[Kim, Wook Hyun]
Issue Date
2014-12
Citation
Journal of Nanoscience and Nanotechnology, 14(12), 9219-9223
Type
Article
Article Type
Article
Keywords
Absorption SpectroscopyAdditiveAdditivesButyric AcidChemistryConversion EfficiencyEfficiencyElectric Power SuppliesFluorine CompoundsFluorine DerivativeFluorocyanophenyl CompoundIncident Photon-to-Current Conversion EfficienciesP3HTPC61BMPhase SeparationPolymer Solar Cell (PSC)Polymer Solar Cells (PSCs)PolymersPower Conversion EfficienciesPower SupplySolar CellsSolar EnergySpectrophotometry, UltravioletTransport EfficiencyUltraviolet SpectrophotometryUV-Visible Absorption Spectroscopy
ISSN
1533-4880
Abstract
The efficiency of polymer solar cells (PSCs) with P3HT [poly(3-hexyl thiophene)]: PC61BM [[6,6]-phenyl C61-butyric acid methyl ester] blend film was improved by the incorporation of a fluorocyanophenyl compound, 3,4,5,6-tetrafluorophthalonitrile (TFP), as an additive. When the amount of TFT additive was 5 wt% based on the total amount of P3HT and PC61BM, the highest efficiency was achieved. The annealed PSC with 5 wt% TFP had a power conversion efficiency of 4.45% compared with that (3.57%) of the reference cell without the additive, which corresponds to an increase of about 18.7% in the efficiency due to an enhancement in the short circuit current (Jsc). A seriese of measurements such as UV-visible absorption spectroscopy, X-ray measurements, atomic force microscopic images and incident photon to current conversion efficiency (IPCE) spectra revealed that the increased Jsc in the PSC with P3HT:PC61BM:TFP blend film was due to an improvement in both exciton generation and charge transport efficiency, resulting from higher absorbance, larger crystal size and more effective phase separation. Copyright © 2014 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2992
DOI
10.1166/jnn.2014.10117
Publisher
American Scientific Publishers
Related Researcher
Files:
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Collection:
Division of IoT∙Robotics Convergence Research1. Journal Articles
Intelligent Devices and Systems Research Group1. Journal Articles


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