Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 18, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3395391
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Funding
- MEST
- DOE
- OS
- BES
- DMSE [DE-FG02-98ER45737]
- Ministry of Education, Science & Technology (MoST), Republic of Korea [10-NB-03] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Well established poly(3-hexylthiophene):[6,6]-phenyl-C-61-butyric acid methyl ester (P3HT:PC61BM) 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/cm(2)), the devices fabricated using P3HT:PC61BM (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:PC61BM BHJ OPVs. (C) 2010 American Institute of Physics. [doi:10.1063/1.3395391]
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