Optical Properties of Lutetium Diphthalocyanine Complex with Silicon Carbide Nanoparticles

Abstract

We have prepared solutions of lutetium diphthalocyanine complexes containing different concentrations of silicon carbide nanoparticles. The silicon carbide nanoparticles were spherical or quasi-spherical in shape. The size of the silicon carbide nanoparticles has been determined to be 10 nm. The optical properties of the solutions were analyzed qualitatively and quantitatively. The results demonstrate that, with increasing lutetium diphthalocyanine concentration, absorption intensity in the spectrum of the silicon carbide increases. This can be accounted for in terms of additional absorption by the lutetium diphthalocyanine molecules because their absorption peak is close in energy to that of the silicon carbide nanoparticles. We have measured photoluminescence spectra of lutetium diphthalocyanine molecules and shown that their peak emission intensity increases by a factor of 1.2 under the effect of the silicon carbide nanoparticles.