Preparation of conducting polyanilines doped with Keggin-type polyoxometalates and their application as counter electrode in dye-sensitized solar cells

Autor(es)

Almeida, Luiz C. P. ^[1] ; Goncalves, Agnaldo D. ^[1] ; Benedetti, Joao E. ^[1] ; Miranda, Paulo C. M. L. ^[1] ; Passoni, Luis C. ^[2] ; Nogueira, Ana F. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, Inst Chem, BR-13083970 Campinas, SP - Brazil

^[2] Univ Estadual Norte Fluminense, Lab Ciencias Quim CCT, BR-28013612 Campos Dos Goytacazes, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Materials Science; v. 45, n. 18, p. 5054-5060, SEP 2010.
• Citações Web of Science: 20

Resumo

Conducting polyanilines doped with two Keggin-type polyoxometalates (POMs) were synthesized by chemical oxidation of aniline. Both conducting polymers provided electrical conductivity values up to 0.1 S cm(-1), as measured by the standard four-probe technique. Structural and morphological characterizations for these materials were achieved by FTIR spectra, X-ray diffraction, scanning electron microscopy (SEM), and thermogravimetric analysis. These conducting polyanilines doped with Keggin-type polyoxometalates (PANI-POMs) were also used to prepare a new type of counter electrode for application in dye-sensitized solar cells (DSCs). Promising results were achieved from DSCs based on PANI-POMs as the materials for the counter electrode, which provides evidence for the dopant role in enhancing the electrical conductivity of PANI. (AU)

• Processo FAPESP: 08/53059-4 - Celulas solares organicas e hibridas baseadas em nanotubos de carbono e fulerenos modificados.
• Beneficiário: Luiz Carlos Pimentel Almeida
• Modalidade de apoio: Bolsas no Brasil - Doutorado