Nanostructured organic layers via polymer demixing for interface-enhanced photovoltaic cells

Nenhuma Miniatura disponível

Data

2006-11-14

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

Amer Chemical Soc

Tipo

Artigo

Direito de acesso

Acesso restrito

Resumo

Significant progress is being made in the photovoltaic energy conversion using organic semiconducting materials. One of the focuses of attention is the morphology of the donor-acceptor heterojunction at the nanometer scale, to ensure efficient charge generation and loss-free charge transport at the same time. Here, we present a method for the controlled, sequential design of a bilayer polymer cell architecture that consists of a large interface area with connecting paths to the respective electrodes for both materials. We used the surface-directed demixing of a donor conjugated/guest polymer blend during spin coating to produce a nanostructured interface, which was, after removal of the guest with a selective solvent, covered with an acceptor layer. With use of a donor poly(p-phenylenevinylene) derivative and the acceptor C-60 fullerene, this resulted in much-improved device performance, with external power efficiencies more than 3 times higher than those reported for that particular material combination so far.

Descrição

Palavras-chave

Idioma

Inglês

Como citar

Chemistry of Materials. Washington: Amer Chemical Soc, v. 18, n. 23, p. 5504-5509, 2006.

Itens relacionados

Financiadores