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Dielectric and electrical properties of an organic device containing benzotriazole and fluorene bearing copolymer
Author(s) -
Yildiz Dilber Esra,
Apaydın Dogukan Hazar,
Toppare Levent,
Cirpan Ali
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38315
Subject(s) - dielectric , benzotriazole , materials science , copolymer , capacitance , electrical resistivity and conductivity , fluorene , equivalent series resistance , conductivity , conductance , polymer chemistry , biasing , analytical chemistry (journal) , voltage , polymer , composite material , chemistry , condensed matter physics , electrical engineering , organic chemistry , physics , optoelectronics , electrode , metallurgy , engineering
Dielectric and electrical properties of a benzotriazole and fluorene copolymer were investigated using current‐voltage ( I – V ), capacitance‐voltage ( C – V ), and conductance–voltage ( G/w–V ) measurements at room temperature. The electrical parameters, barrier height (φ Bo ), and ideality factor ( n ) obtained from the forward bias LnI ‐ V plot were found as 0.453 eV and 2.08, respectively. The R s values were found as 2.20, 2.12, 1.90 Ω using dV/dLnI versus I, H(I) versus I and F(V)‐V plots, respectively. The dielectric constant (ε′), the dielectric loss (ε″), and the ac electrical conductivity ( σ ac ) are a strong function of voltage and frequency. Decrease in ε′ and ε″ values with increasing frequency was observed. On the other hand, the increase of σ ac with increasing frequency was observed. Experimental results show that the conjugated copolymer plays an important role in the values of barrier height, ideality factor, series resistance, and dielectric parameters. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013