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Improved efficiency of bulk heterojunction poly(3-hexylthiophene):[6,6]-phenyl-C-61-butyric acid methyl ester photovoltaic devices using discotic liquid crystal additives

Title
Improved efficiency of bulk heterojunction poly(3-hexylthiophene):[6,6]-phenyl-C-61-butyric acid methyl ester photovoltaic devices using discotic liquid crystal additives
Authors
Jeong, S[Jeong, Seonju]Kwon, Y[Kwon, Younghwan]Choi, BD[Choi, Byeong-Dae]Ade, H[Ade, Harald]Han, YS[Han, Yoon Soo]
DGIST Authors
Jeong, S[Jeong, Seonju]; Choi, BD[Choi, Byeong-Dae]; Han, YS[Han, Yoon Soo]
Issue Date
2010-05-03
Citation
Applied Physics Letters, 96(18)
Type
Article
Article Type
Article
Keywords
Active LayerAdditivesAverage PowerBulk-HeterojunctionButyric AcidsCarrier MobilityConversion EfficiencyDiscotic Liquid CrystalEsterificationEstersFatty AcidsHeterojunctionsHigh EfficiencyHigh MobilityLiquid CrystalsMethyl EstersOrganic PhotovoltaicsPhotovoltaic DevicesPhotovoltaic EffectsPoly (3-Hexylthiophene)Self-Assembling AbilitySolar IlluminationThermal-Annealing
ISSN
0003-6951
Abstract
Well established poly(3-hexylthiophene):[6,6]-phenyl- C61 -butyric acid methyl ester (P3HT: PC61 BM) bulk-heterojunction organic photovoltaics (BHJ OPVs) were improved by incorporating a small portion of the discotic liquid crystal (DLC) additives with a strong self-assembling ability and high mobility. Under simulated solar illumination of AM 1.5 (100 mW/ cm2), the devices fabricated using P3HT: PC61 BM (1:1.2 w:w) layer blended with 3 wt % of 2,3,6,7,10,11-hexaacetoxytriphenylene (DLC 2) achieved an average power conversion efficiency (PCE) of 3.97% after thermal annealing, compared to the reference cells with PCE=3.03%. DLCs have been proven here to be a promising new type of additive that can remain embedded in the active layer of high efficiency P3HT: PC61 BM BHJ OPVs. © 2010 American Institute of Physics.
URI
http://hdl.handle.net/20.500.11750/3524
DOI
10.1063/1.3395391
Publisher
American Institute of Physics Publishing
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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