Photoconductivity of 1,2-(1 ',1 ',2 ',2 '-tetracyanomethanoxymethano)[60]fullerene-doped PVK

1,2-(1',1',2',2'-Tetracyanomethanoxymethano)[60]fullerene, a derivative of C-60, is a better electron acceptor than the parent C-60. The film of PVK d oped with 1.6 wt % of this derivative was prepared and characterized. The m icromorphology of the film was studied by transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The pho toinduced discharge curves and photoconduction spectra of the films were me asured. The results showed that PVK doped with the C-60 derivative displaye d more photoconductivity than that of PVK doped with pure C-60 or a mixture of C-60 and C-70. (C) 1999 John Wiley & Sons, Inc.