A novel D-pi -A-sigma -A' dendritic dye (D3) was synthesized. The dye molecule was successfully transferred onto an ITO electrode by the Langmuir-Blodgett (LB) technique and its photoelectric conversion property in LB monolayer films was investigated. The results show that this dye exhibits good photocurrent generation that is dependent on the deposited pressure. Its photocurrent generation quantum yield at 25 mN m(-1) is 0.32%, while that at 6 mN m(-1) is 0.21%.