Y. Yoshida et al., EVALUATION OF THIN-FILMS OF FUNCTIONAL ORGANIC MATERIALS BY TOTAL-REFLECTION X-RAY-DIFFRACTION, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 280, 1996, pp. 271-276
The crystal structure and molecular orientation of lead phthalocyanine
(PbPc) thin films onto a silicon (Si) and potassium bromide (KBr) wer
e in-situ observed by using the new system combined a total reflection
X-ray diffraction (TRXD) with an organic molecular beam deposition (O
MBD). When the substrate was kept at a temperature of 25 degrees C, th
e deposited films consisted of monoclinic crystals and the PbPc molecu
les tend to orient with the column axis parallel to the surface. Furth
er, the films deposited on Si at 100 degrees C consisted of the tricli
nic crystals with the column axis parallel to the surface. While, the
thin films on KBr exhibited much higher crystallinity than on Si, and
same structures even if the substrate temperature of 180 degrees C was
raised after deposition.