Journal
SYNTHETIC METALS
Volume 190, Issue -, Pages 72-78Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2014.01.006
Keywords
Organic photovoltaics; Bilayers; P3HT nanowires; Self-assembly; AFM
Funding
- FCT-Portugal [PTDC/CTM/111263/2009, PTDC/CTM-NAN/116931/2010, PEst-OE/EEI/LA0008/2013]
- FCT [SFRH/BPD/73682/2010, SFRH/BPD/75338/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/73682/2010, PTDC/CTM-NAN/116931/2010, SFRH/BPD/75338/2010] Funding Source: FCT
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Nanowires of the conjugated polymer poly(3-hexylthiophene) (P3HT) were produced by solution self-assembly and incorporated into bilayer photovoltaic devices with PCBM as the electron-acceptor material. Atomic Force Microscopy enabled a full assessment of the self-assembled P3HT fibrils network. It also revealed the effect the pre-existing nanowires have on the evaporated PCBM overlayer, strongly suggesting a master role. The power conversion efficiency of the bilayer with P3HT nanowires dramatically increases, when compared to the non-structured bilayer photovoltaic devices of P3HT. Photovoltaic devices characterization ensured a comparative overview of the performance parameters for both structured and non-structured P3HT:PCBM bilayers and blend devices. (c) 2014 Elsevier B.V. All rights reserved.
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