Since the first report of Si–C bound organic monolayers on oxide-free Si almost two decades ago, a substantial amount of research has focused on studying the fundamental mechanical and electronic properties of these Si/molecule surfaces and interfaces. This feature article covers three closely related topics, including recent advances in achieving high-density organic monolayers (i.e., atomic coverage >55%) on oxide-free Si(111) substrates, an overview of progress in the fundamental understanding of the energetics and electronic properties of hybrid Si/molecule systems, and a brief summary of recent examples of subsequent functionalization on these high-density monolayers, which can significantly expand the range of applicability. Taken together, these topics provide an overview of the present status of this active area of research.
- hydrogen-terminated si(111)
- mixed methyl/allyl monolayers
- alkyl monolayers
- porous silicon
- si surfaces
- carrier lifetime
Li, Y., Calder, S. A., Yaffe, O., Cahen, D., Haick, H., Kronik, L., & Zuilhof, H. (2012). Hybrids of Organic Molecules and Flat, Oxide-Free Silicon: High-Density Monolayers, Electronic Properties, and Functionalization. Langmuir, 28(26), 9920-9929. https://doi.org/10.1021/la3010568