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

Autor(es)

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 Flavia ^[1]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Journal of Power Sources; v. 215, p. 99-108, OCT 1 2012.
• Citações Web of Science: 10

Resumo

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. (AU)

• Processo FAPESP: 09/15428-0 - Células fotovoltaicas híbridas com nanopartículas inorgânicas: investigação da função das nanopartículas e desenvolvimento de dispositivos mais eficientes
• Beneficiário: Jilian Nei de Freitas
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado