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Growth of organic heterostructures on metal surfaces
Kugler, David ; Novák,, Jiří (oponent) ; Procházka, Pavel (vedoucí práce)
Deposition of organic molecules on metal substrate often results in their spontaneous arrangement driven by intermolecular and molecular-substrate interactions. This phenomenon is called self-assembly and can be used to create functional structures with atomic precision. In particular, thin films of organic semiconductors are of growing interest for their potential application in the semiconductor industry. However, the efficiency of such devices is related to the interfacial resistivity at the metal-organic interface. Therefore, the study of the growth type of organic semiconductors on metal substrates is crucial for their future applications. This diploma thesis focuses on the formation of a cover layer of well-ordered 1,3,5-benzene-tricarboxylic acid (BTB) molecules on Ag(111). The main objective of the thesis is to use this cover layer as a substrate for the subsequent growth of pentacene layers, one of the intensively studied organic semiconductors. Coverage by an ordered layer of pentacene with an area suitable for practical applications was achieved. Low-energy electron microscopy, scanning tunneling microscopy, X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy were used to study the growth and properties of molecular layers.
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