The Effect of the ِAcid HCl Concentration on the Optical Properties of P-Crystal Violet

Experimental study has been presented for calculation the optical properties of organic semiconductor crystal violet in the range(300-1000)nm .This material has high absorption in the visible range, so it can be used as solar cell. Also the study gave the result that this material is opaque in the visible range . The energy gap is (2.51eV) in the range (300-440) nm. The optical conductivity was increased by increasing the incident photon energy .It appeared that by adding HCl to the crystal violet, the band gap value was affected and it was (2.2 eV). The crystal violet has optical activity property with rotatory coefficient 5.2*10.