Anthracene and metal-free phthalocyanine (H2Pc) are well-known organic semiconductors, and are reported to be photoconductive in the UV-VIS and IR regions, respectively. Hence H2Pc-doped anthracene crystal formed is expected to be active in the entire region UV-VIS-IR, and the compound material could be a viable alternative for a possible solar cell material for the entire range of UV, VIS and IR regions of solar radiation. In the present study, cocrystals of H2Pc-doped anthracene are formed using DNISO as the common solvent, and subjected to conductivity studies. The activation energy decreases as the concentration of H2Pc increases up to 1 % and decreases beyond I %, In the UV spectrum, the absorption decreases when the concentration of H2Pc exceeds 1%. Though the traps play a major role in the electrical and optical conductivity of organic molecular solids, their presence beyond a limit decreases the conductivity. The samples are found to be photoactive and could be a possible alternative material for a semiconductorbased solar cell. 2001 Elsevier Science B.V. All rights reserved.