title: Tailoring the interface using thiophene small molecules in TiO2/P3HT hybrid solar cells.
abstract: In this paper we focus on the effect of carboxylated thiophene small molecules as interface modifiers in TiO(2)/P3HT hybrid solar cells. Our results show that small differences in the chemical structure of these molecules, for example, the presence of the -CH(2)- group in the 2-thiopheneacetic acid (TAA), can greatly increase the TiO(2) surface wettability, improving the TiO(2)/polymer contact. This effect is important to enhance exciton splitting and charge separation.
authors: Laboratório de Nanotecnologia e Energia Solar, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil. anaflavia@iqm.unicamp.br
authors: Flavio S
authors: FS
authors: Freitas
authors: John N
authors: JN
authors: Clifford
authors: Emilio
authors: E
authors: Palomares
authors: Ana F
authors: AF
authors: Nogueira