Conducting polymer polythiophene (PT) films incorporated with copper phthalocyanine (CuPc) or fullerene C-60 or both molecules together were synthesized and characterized by photoluminescence measurements. The hybrid materials were also modified by electrochemically applying positive or negative voltage or by adding the donor molecule tetrathiafulvalene (TTF) or acceptor molecule tetracyanoquinodimethane (TCNQ) into the hybrid films and were investigated by photoluminescence measurements in order to obtain fundamental photoluminescence properties of the hybrid materials. The molecule was injected by electrochemical and diffusion methods. A photoluminescence emission peak was observed at 594 nm in the case of a PT sample doped with CuPc by the diffusion method. Adding C-60 molecules to the CuPc diffused PT sample by the diffusion method made the emission peak shift to the higher wavelength at 730 nm, suggesting the molecular interaction between the polymer chain and C-60 in the photoluminescence emission process because double emission peaks were observed at 590 and 735 nm in the case of single doping of C-60. Electrochemically applying voltages to the films or adding donor molecule TTF and acceptor molecule TCNQ to the polymer hybrid films caused the photoluminescence peak shifts, loss, and enhancement. The present study showed the possibility of control of photoluminescence wavelength of the hybrid films. (C) 2008 American Vacuum Society.