Optical band gaps of organic semiconductor materials

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

José C. S. Costa (Autor) FEUP; Ricardo J. S. Taveira (Autor) FCUP; Carlos F. R. A. C. Lima (Autor) FCUP; Adélio Mendes (Autor) FEUP; Luís M. N. B. F. Santos (Autor) FCUP

Revista

Título: Optical Materials

Vol. 58

Páginas: 51-60

ISSN: 0925-3467

Editora: Elsevier

Indexação

ISI Web of Knowledge - 260 Citações

ISI Web of Science

Scopus - 295 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Tecnológicas

Projetos Associados

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

ID Authenticus: P-00K-FSV

DOI: 10.1016/j.optmat.2016.03.041

Abstract (EN): UV-Vis can be used as an easy and forthright technique to accurately estimate the band gap energy of organic p-conjugated materials, widely used as thin films/composites in organic and hybrid electronic devices such as OLEDs, OPVs and OFETs. The electronic and optical properties, including HOMOeLUMO energy gaps of p-conjugated systems were evaluated by UVeVis spectroscopy in CHCl3 solution for a large number of relevant p-conjugated systems: tris-8-hydroxyquinolinatos (Alq3, Gaq3, Inq3, Al(qNO2)3, Al(qCl)3, Al(qBr)3, In(qNO2)3, In(qCl)3 and In(qBr)3); triphenylamine derivatives (DDP, p-TTP, TPB, TPD, TDAB, m-MTDAB, NPB, a-NPD); oligoacenes (naphthalene, anthracene, tetracene and rubrene); oligothiophenes (a-2T, b-2T, a-3T, b-3T, a-4T and a-5T). Additionally, some electronic properties were also explored by quantum chemical calculations. The experimental UVeVis data are in accordance with the DFT predictions and indicate that the band gap energies of the OSCs dissolved in CHCl3 solution are consistent with the values presented for thin films.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10