دراسة الخواص الطيفية لصبغة الرودامين RB) B) داخل غشاء بوليمير PMMA

This Paper studies the absortion spectra and the fluorescence of RB dye in addition to polymath metha acrelate (PMMA) as a thin film with different concentration (1* 10-3 , 1*10-4 ,1* 10-5) M at the room temperature.The quantum efficiency of the film for each concentration has been calculated resulting (70.5% - 68.5% - 67%) respectively and it calculated the differences bet weer spectrum properties of the polymer film itself in each concentration which mixed with dye RB in accordance with spectra range, band width at the middle of the intensity FWHM, and wave -lengths of the absorption peaks and the fluorescence.