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Author(s): José C. S. Costa
Ricardo J. S. Taveira
Carlos F. R. A. C. Lima
Adélio Mendes
Luís M. N. B. F. Santos
Title: Optical band gaps of organic semiconductor materials
Issue Date: 2016
Abstract: UV-Vis can be used as an easy and forthright technique to accurately estimate the band gap energy oforganic p-conjugated materials, widely used as thin films/composites in organic and hybrid electronicdevices such as OLEDs, OPVs and OFETs. The electronic and optical properties, including HOMOeLUMOenergy gaps of p-conjugated systems were evaluated by UVeVis spectroscopy in CHCl3 solution for alarge 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 alsoexplored by quantum chemical calculations. The experimental UVeVis data are in accordance with theDFT predictions and indicate that the band gap energies of the OSCs dissolved in CHCl3 solution areconsistent with the values presented for thin films.
Subject: Ciências Tecnológicas
Technological sciences
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FCUP - Artigo em Revista Científica Internacional
FEUP - Artigo em Revista Científica Internacional

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