Dielectric and electrical properties of an organic device containing benzotriazole and fluorene bearing copolymer

Yildiz D. E., APAYDIN D. H., TOPPARE L., ÇIRPAN A.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.128, sa.3, ss.1659-1664, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 128 Sayı: 3
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1002/app.38315
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1659-1664
  • Anahtar Kelimeler: copolymers, dielectric properties, properties and characterization, CAPACITANCE-VOLTAGE CHARACTERISTICS, SOLAR-CELLS, SCHOTTKY DIODES, PARAMETERS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Dielectric and electrical properties of a benzotriazole and fluorene copolymer were investigated using current-voltage (IV), capacitance-voltage (CV), and conductancevoltage (G/wV) measurements at room temperature. The electrical parameters, barrier height (phi Bo), and ideality factor (n) obtained from the forward bias LnI-V plot were found as 0.453 eV and 2.08, respectively. The Rsvalues were found as 2.20, 2.12, 1.90 using dV/dLnIversus I, H(I)versus I and F(V)-V plots,respectively. The dielectric constant (epsilon), the dielectric loss (epsilon), and the ac electrical conductivity (sigma ac) are a strong function of voltage and frequency. Decrease in epsilon and epsilon values with increasing frequencywas observed. On the other hand, the increase of sigma 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. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013