Laser Irradiation Time Effect on the Optical Properties of Copper Phthalocyanine Solution

Abstract

Copper phthalocyanine (CuPc) solution are prepared with concentration 0.15 gm/l. The samples are irradiated by different laser wavelengths for different irradiation times (0, 4, 8, and 16 mins). The optical properties are investigated to study the effect of the laser irradiation. The absorption spectrum shows decreasing in the solution absorbance with increasing the laser irradiation times. The reflectance spectrum performs the same behavior of the absorbance. The energy gap is also estimated to show that it increase with increasing the irradiation time. The optical constants (absorbitivity, molar absorbitivity, absorption coefficient, refractive Index, extinction coefficient, real dielectric constant, imaginary dielectric constant, optical conductivity) are increased with increasing the laser irradiation time.