Silicon surface chemistry remains rich with mechanistic questions and intrigue.  A pervasive question has been the parallels between molecular silicon chemistry, reactions on flat surfaces, and those on (potentially quantum-confined) nanocrystalline silicon materials.  In this talk, dedicated to Professor Hamers, we will discuss recent work on understanding the role of excitons in nanocrystalline silicon - the electron-hole pair can be used to drive surface reactions, particularly those involving silicon-carbon bond formation.  Through the use of electron- and hole-trapping agents, kinetics, and surface coverage analyses, we attempt to provide a general reaction scheme for the mechanism of exciton-driven hydrosilylation chemistry .

Probing the mechanism of exciton-based hydrosilylation on silicon

243rd National Meeting (2012)

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