Synthesis and photovoltaic properties of new europium complex Eu(DBM)3(CPyBM)

A new europium（Ⅲ） complex, tris（dibertzoylmethanate）{ 1-[9-hexyl-9-carbazole]-2-（2-pyridyl）-bertzimidazole}europium（Ⅲ） [Eu（DBM）a（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/cm^2. 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.

Synthesis, Structure of Organophosphonyl Polyoxotungstates of Formula [C_6H_(11)P (O)]_2 X^(n+)W_(11)O^((8-n)-)_(39) (X^(n+)=P^(5+), Si^(4+), B^(3+), Ga^(3+))

Cyclohexanephosphonyl heteropolyundecatungstates of formula [C6H11P(O)]2 Xn+ W11O398-n- (Xn+=P5+, Si4+, B3+, Ga3+ have been prepared. purified and characterized by elemental analysis .IR and 1H. 31P and 183W NMR.