Optical Studies of Poly (N-Carbazole) (PVK) Blending with Polyvinylpyrrolidone (PVP) Using Tauc/Davis-Mott Model Academic Article uri icon

abstract

  • The optical absorption spectra of blended poly (N-carbazole) (PVK) with polyvinylpyrrolidone (PVP) in various compositions are investigated. A doctor blade technique was used to coat the blended polymer on a quartz substrate. The electronic parameters such as absorption edge (Ee), allowed direct band gap (Ed), allowed indirect band gap (Ei), Urbach edge (Eu) and steepness parameter (γ) were calculated using Tauc/Davis-Mott Model. The results reveal that the Ee, Ed and Ei increase with increasing of PVP ratio. There also have variation changing in Urbach energy and steepness parameter.

authors

  • Alias, A.N.
  • Kudin, T.I. Tunku
  • Zabidi, Z.M.
  • Harun, M.K.
  • Marwan Bin Ali, Abdul Malik
  • Yahya, Mohamad Faizul

publication date

  • 2013

number of pages

  • 4

start page

  • 527

end page

  • 531

volume

  • 652-654