Author/Authors :
Veenstra، نويسنده , , S.C. and Malliaras، نويسنده , , G.G. and Brouwer، نويسنده , , H.J. and Esselink، نويسنده , , F.J. and Krasnikov، نويسنده , , V.V. and van Hutten، نويسنده , , P.F. and Wildeman، نويسنده , , J. and Jonkman، نويسنده , , H.T. and Sawatzky، نويسنده , , G.A. and Hadziioannou، نويسنده , , G.، نويسنده ,
Abstract :
Large photovoltaic responses have been recently observed in devices based on donor-acceptor blends. Their enhanced performance, which relies on the formation of a bicontinuous network of internal heterojunctions, is very sensitive to the morphology of the blend. In this paper, we propose sexithiophene-C60 blends, prepared by coevaporation, as a model system for the study of these devices. Preliminary results suggest a microphase-separated morphology with a domain size comparable to the exciton diffusion range. Photovoltaic cells based on the blends are demonstrated.
Keywords :
organic thin films , Photovoltaic effect , blends , morphology
