The absorption spectrum for each of these dopants is characterized by a single broad peak, the individual absorption maxima were found at 450, 460, 522 and 570 nm for Yellow GN, AgNPs, Red G and AuNPs respectively. It is clear that AgNPs have their maximum absorption at 460 nm in PMMA which represents the wavelength having the lowest percentage of the visible solar spectrum since it has the highest intensity at about 550 nm.