Epitaxial Growth of Crystalline Thin-Films of Perfluorinated Copper Phthalocyanine on the Single-Crystal Copper Phthalocyanine
Journal of crystal growth(2023)
摘要
Understanding and controlling the growth structures of molecular heterojunctions are important for the pursuit of highly efficient organic semiconductor devices. In this study, a well-defined molecular heterojunction was constructed by the deposition of an n-type organic semiconductor molecule, perfluorinated copper phthalocyanine (F16CuPc), on single-crystals of a typical p-type material, copper phthalocyanine (CuPc). The heterojunction was characterized using synchrotron radiation surface X-ray diffraction techniques to unveil the epitaxial growth of crystalline thin-films of F16CuPc on the CuPc surface. The inter-lattice relationships between F16CuPc and CuPc deduced from the present results imply that the in-plane orientation of the F16CuPc crystal lattice was predominantly governed by the molecular-level alignments of the & pi;-backbones of the F16CuPc and CuPc molecules at the nucleation center for crystal growth at the interface.
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关键词
A3,Molecular beam epitaxy,Physical vapor deposition processes,B1,Aromatic compounds,B2,Organic semiconductor materials,B3,Donor-acceptor interface,A1,Grazing-incidence wide-angle X-ray,scattering
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