Determination and analysis of dispersive optical constants of some organic thin films
Date
2010-04
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Natl Inst Optoelectronics
Abstract
The optical behaviour of the complexes of (2E)-3-aza-1-(hydroxyimino)-2,4-diphenylpent-2-ene (HL) was investigated by optical reflectance and transmittance measurements. The optical constants (refractive index, n; extinction coefficient, k and dielectric constant, e) of some organic thin films were determined using reflectance and transmittance spectra. The optical absorption studies show that the transition is direct with band gap energy values, which are calculated. Analysis of the basis absorption spectra was also carried out to determine optical band gap (E-g) and Urbach parameter (E-o). The analysis of the optical absorption data revealed optical direct transition with band gaps of 3.7-3.9 eV. A surface observation of these thin films was also carried out by an Atomic Force Microscope.
Description
Keywords
Optical band gaps, Urbach parameter, Atomic force microscope, Materials science, Optics, Physics, Energy gap, Light absorption, Optical constants, Reflection, Refractive index, Extinction coefficients, Optical absorption studies, Optical reflectance, Organic thin films, Surface observation, Transmittance measurements, Transmittance spectra
Citation
Kaya, Y. vd. (2010). "Determination and analysis of dispersive optical constants of some organic thin films". Journal of Optoelectronics and Advanced Materials, 12(4), 948-952.