Effect of substrate temperature on the optical constants of zincphthalocyanine thin films by S. Senthilarasu and R. Sathyamoorthy

Crystal Research and Technology

Cryst. Res. Technol. 41, 1136 (2006) - Abstract -

Effect of substrate temperature on the optical constants of zincphthalocyanine thin films

S. Senthilarasu and R. Sathyamoorthy

R&D Department of Physics, Kongunadu Arts & Science College, Coimbatore 641 029, Tamilnadu, India

Keywords	optical absorption, extinction coefficient, refractive index
PACS	78.20.–e, 78.20.Ci, 78.20.Ci
DOI	10.1002/crat.200610734

The influence of the film thickness and substrate temperature on optical constants of the vacuum evaporated ZincPhthalocyanine (ZnPc) thin films have been reported in this paper. The direct and allowed optical band gap energy has been evaluated. The optical constants such as extinction coefficient and refractive index have been evaluated from the transmittance values and the observed results strongly dependent on substrate temperature and film thickness. The low values of the refractive index have been observed for the films prepared at 200°C. The change in crystallanity and phase transformation affect the optical constants and the lower values of the optical constants will leads to the good quality of the ZnPc thin films.

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