Fractals in C-60 doped tetracyanoquinodimethane thin films are reporte
d. The fractal patterns and their microscopic features have been chara
cterized by transmission electron microscopy (TEM). The results indica
te that the observed fractals can be compared to the cluster-diffusion
-limited-aggregation model. The fractal dimension has been determined
to be 1.69+/-0.04. In addition, the formation mechanism of the fractal
s is discussed.