Hybrids of Organic Molecules and Flat, Oxide-Free Silicon: High-Density Monolayers, Electronic Properties, and Functionalization

摘要

Since the first report of Si−C bound organicnmonolayers on oxide-free Si almost two decades ago, ansubstantial amount of research has focused on studying thenfundamental mechanical and electronic properties of these Simolecule surfaces and interfaces. This feature article coversnthree closely related topics, including recent advances innachieving high-density organic monolayers (i.e., atomic coveragen>55%) on oxide-free Si(111) substrates, an overview ofnprogress in the fundamental understanding of the energeticsnand electronic properties of hybrid Si/molecule systems, and anbrief summary of recent examples of subsequent functionalizationnon these high-density monolayers, which can significantlynexpand the range of applicability. Taken together, these topicsnprovide an overview of the present status of this active area of research.