CONDUCTIVE POLYMER CONTAINING CARBAZOLE, AND ORGANIC PHOTOVOLTAIC DEVICE USING SAME

摘要

The present invention relates to a conductive polymer containing a 2,7-carbazole group as expressed in the following chemical formula 1, and to an organic photovoltaic device using the conductive polymer as a photoelectric conversion material. The present invention provides a conductive polymer in which a specific amount of a carbazole compound is introduced into the polymer comprising a donor functional group alone, containing one or more of various types of aromatic monomers, or to the donor-acceptor type polymer in which a repeating acceptor group is introduced into a donor functional group, to thereby improve photon absorptivity and hole mobility of the conductive polymer. Thus, the conductive polymer of the present invention can be used as a photoelectric conversion material for an organic thin film transistor (OTFT) and an organic light-emitting diode (OLED). Further, the present invention provides an organic photovoltaic device using, as an electron donor, the conductive polymer containing the carbazole compound, to thereby achieve improved photoelectric conversion efficiency in organic thin film solar cells.