Journal
SYNTHETIC METALS
Volume 205, Issue -, Pages 185-189Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2015.04.009
Keywords
Bulk heterojunction; Polymer solar cells; Zinc oxide nanostructures; Scattering
Funding
- National Research Foundation of Korea (NRF) of the Ministry of Science, ICT & Future Planning (MSIP) of Korea [NRF-2011-0028320, NRF-2013M2B2A4041436]
- Pioneer Research Center Program [NRF-2013M3C1A3065522]
- National Research Foundation of Korea [2013M2B2A4041436] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The photovoltaic performance of polymer solar cells (PSCs) can be improved by incorporating zinc oxide (ZnO) nanostructures of different particle morphology in combination with poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) in the active layer of the bulk heterojunction (BHJ) PSCs. Special emphasis is made to study the effect of the stabilizer-free ZnO nanoparticles (NPs) geometry - nanospheres, nanoplates and nanopyramids in the active layer of BHJ PSCs. The concentration of ZnO NPs in the active layer of BHJ blends was varied from 1 to 6 wt%. Incorporation of NPs in the blend of active layer material (P3HT:PC71BM) increases the absorptivity with increasing concentration of ZnO NPs due to the light scattering effect of ZnO, which enhances the photovoltaic performance of the resultant polymer solar cells. The influence of the morphology and the concentration of the ZnO NPs on the general performance of the PSC devices are discussed in detail. (C) 2015 Elsevier B.V. All rights reserved.
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