New Insight into the Role of the Interfacial Molecular Structure on Growth and Scaling in Organic Heterostructures

详细信息    查看全文

• 作者：Yi Zhang ; Esther Barrena ; Xuena Zhang ; Ayse Turak ; Felix Maye ; Helmut Dosch
• 刊名：Journal of Physical Chemistry C
• 出版年：2010
• 出版时间：August 19, 2010
• 年：2010
• 卷：114
• 期：32
• 页码：13752-13758
• 全文大小：453K
• 年卷期：v.114,no.32(August 19, 2010)
• ISSN：1932-7455

文摘

In this combined atomic force microscopy and X-ray diffraction study, we explore the microscopic origin of the scaling properties of the growth of organic−organic heterostructures formed here by F₁₆CoPc and diindenoperylene (DIP) molecules as representative systems for electron and hole transporting materials. We evaluate the influence of the morphological properties of the first organic layer (DIP) on further temporal evolution of the morphology and structure of F₁₆CoPc films. From the derived scaling exponents, we conclude that the morphology evolution is dominated by mound formation. The microscopic origin of such morphology is ascribed to structural changes occurring during the first stages of F₁₆CoPc growth as revealed by grazing incidence X-ray diffraction (GIXD). The microstructure of organic materials should be taken into account, the challenging task of modeling growing surfaces and interfaces of organic materials.