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A new europium(Ⅲ) complex, tris(dibenzoylmethanate){1-[9-hexyl-9-carbazole]-2-(2-pyridyl)-benzimidazole}europium(Ⅲ)[Eu(DBM)_3(CPyBM)] was synthesized and used as an electron-acceptor and electron-transport layer in organic photovoltaic (PV) device. Power conversion efficiency achieved from the device was 1.04% under illumination with 365 nm UV light at 1.6 mW/cm2.Compared with the previous reported devices based on Eu(Ⅲ) complexes, the PV performances were improved. The working mechanism of the organic PV device was discussed.
A new europium (Ⅲ) complex, tris (dibenzoylmethanate) {1- [9-hexyl-9- carbazole] -2- (2-pyridyl) -benzimidazole} europium synthesized and used as an electron-acceptor and electron-transport layer in organic photovoltaic (PV) device. Power conversion efficiency achieved from the device was 1.04% under illumination with 365 nm UV light at 1.6 mW / cm2.Compared with the previous reported devices based on Eu (Ⅲ) complexes, the PV performances were improved. The working mechanism of the organic PV device was discussed.