The effect of doping by methyl red and methyl blue on the absorption spectra and the optical energy gap of poly (methyl methacrylat) PMMA film have been studied.The optical transmission (T%) in the Building a System to People Identification Based on Human Hand Geometry wavelength range 190-900 nm for films deposited by using solvent casting method were measured.The Absorptance data reveals that the doping affected the absorption edge as a red and blue shift in its THE RISKS ON THE RUSSIAN FINANCIAL MARKET IN THE CONDITIONS OF GLOBALIZATION values.
The films show indirect allowed interband transitions that influenced by the doping.Optical constants; refractive index, extinction coefficient and real and imaginary part of dielectric constant were calculated and correlated with doping.