Dielectric constant of indium-tin oxide (ITO) substrate was obtained b
y the basis of free electron model to evaluate the reflection infrared
(IR) spectrum of an organic chin film on the ITO substrate in the wav
enumber region from 3500 to 600 cm(-1). In a wavenumber region of less
than 2000 cm(-1), the given spectrum was approximate to the spectrum
on a metal substrate having high reflectivity. In this region. the thi
ckness of the PVCz thin film under physical Vapor deposition process w
as proportional to the peal, intensity of reflection spectrum. (C) 199
8 Elsevier Science S.A.