Highly oriented thin films of tetrathiafulvalene tetracyanoquinodimethane (
TTF-TCNQ) and of p-nitrophenyl nitronyl nitroxide (p-NPNN) have been grown
on alkali halide substrates by vapor deposition techniques. Their surfaces
reveal clearly differentiated morphologies, as measured with tapping mode a
tomic force microscopy (TMAFM), exhibiting different kinds of defects. Howe
ver, the films order in similar layered molecular structures parallel to th
e substrate plane. (C) 1999 Elsevier Science B.V. All rights reserved.