The absorption spectra plotted together shows a decrease of intensity with Mn doping indicating a decrease in lattice defect (Similar decrease in intensity observed in PL spectra). The same trend in UV absorption spectra was also obtained for the solid (precipitated) samples (Fig ). The absorption peaks were however less prominent and a change in the peak positions was observed. The difference in exciton bands is usually 1 eV which matched with the peaks obtained for the solutions with 298 nm (4.14 eV) and 394 nm (3.15 eV). The peaks obtained in case of the solid samples with one peak at 388 nm (3.2 eV) and the other at 436 nm (2.8 eV) giving a difference of 0.4 eV indicating the energy levels are closely packed. The absorption peaks in case of the solid samples were broader and overlapping which is due to the crystallization that has taken place resulting in lattice vibrations.