Nanocomposites of gold and poly(3-hexylthiophene) containing fullerene moieties: Synthesis, characterization and application in solar cells

JOURNAL OF POWER SOURCES

卷:215

Article

de Freitas, Jilian N.¹  Mamo, Messai A.^2,3  Maubane, Manoko^2,3  van Otterlo, Willem A. L.^3,4  Coville, Neil J.^2,3  Nogueira, Ana Flavia¹ 

[1] Univ Campinas UNICAMP, Inst Chem, Lab Nanotechnol & Solar Energy, BR-13083970 Campinas, SP, Brazil

[2] Univ Witwatersrand, DST NRF Ctr Excellence Strong Mat, ZA-2050 Johannesburg, South Africa

[3] Univ Witwatersrand, Sch Chem, Inst Mol Sci, ZA-2050 Johannesburg, South Africa

[4] Univ Stellenbosch, Dept Chem & Polymer Sci, ZA-7600 Stellenbosch, Western Cape, South Africa

关键词: Poly(3-hexylthiophene);    Fullerene;    Gold nanoparticles;    Nanocomposites;    Dye-sensitized solar cells;    Organic solar cells;   

DOI  :  10.1016/j.jpowsour.2012.04.066

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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