Dispersion of CdX(X=Se,Te) nanoparticles in P3HT conjugated polymer

Abstract

Hybrid absorber layers of P3HT having surfactant free CdTe and CdSe nanoparticles dispersed in it were deposited using spin coating technique. 1HNMR spectra confirmed the chemical interaction between the P3HT and the nanoparticles, which differs for the two nanoparticles. Optical absorbance extended from 350nm to near IR region for higher concentrations of the nanoparticles and the effect of charge transfer complex (CTC) were also seen. Photoluminence measurements on the hybrid films confirmed the photo-induced charge transfer between the polymer and nanoparticles. The difference in the properties of hybrid P3HT films shows the role of nanoparticles dispersion.