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Type: Artigo de periódico
Title: Nanocomposites of gold and poly(3-hexylthiophene) containing fullerene moieties: Synthesis, characterization and application in solar cells
Author: de Freitas, JN
Mamo, MA
Maubane, M
van Otterlo, WAL
Coville, NJ
Nogueira, AF
Abstract: Functionalized C-60 was reacted with 3-hexylthiophene in the presence of FeCl3 to produce a copolymer (P3HT-C-60) containing 3-hexylthiophene units as the main chain, with C60 side groups. Gold nanoparticles (AuNPs) were synthesized in the presence of poly(3-hexylthiophene) (P3HT), or P3HT-C-60 copolymer, using a two-phase, one-pot reaction involving the reduction of HAuCl4 by NaBH4. This approach resulted in the formation of nanocomposites where AuNPs are directly stabilized with P3HT or P3HT-C-60. All the materials were characterized using UV-vis absorption and fluorescence spectroscopy. X-ray diffraction and high-resolution transmission electron microscopy, and were applied as sensitizers or co-sensitizers in dye-sensitized solar cells. The synergistic effect in the ternary component nanocomposite introduced by the presence of C-60 and AuNPs resulted in devices with higher photocurrents compared to standard devices. (C) 2012 Elsevier By. All rights reserved.
Subject: Poly(3-hexylthiophene)
Gold nanoparticles
Dye-sensitized solar cells
Organic solar cells
Country: Holanda
Editor: Elsevier Science Bv
Citation: Journal Of Power Sources. Elsevier Science Bv, v. 215, n. 99, n. 108, 2012.
Rights: fechado
Identifier DOI: 10.1016/j.jpowsour.2012.04.066
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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