Abstract
This review on the formation of organic heterostructures is focused around two specific topics: the templating effect of crystalline organic films in growth of organic heterostructures and the heteromolecular bilayer. With examples of chain-like molecules (sexiphenyl, pentacene, and sexithiophene), it will be shown that the molecular orientation in the first deposited film is the main determinant in aligning the molecules of the second film. The importance of lattice matching and epitaxial relationship is discussed. For the simplest organic heterostructure—the bilayer—it will be shown that the newly established method of photoemission tomography is ideal for such systems. Specifically, the possibility of an inversion of layers after deposition of the second molecular layer is argued.
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