Here, we investigate p-type and n-type porous silicon (PS) reactivity towards oxygen and ammonia in the gas phase. We show that in both the environments, a clear correlation exists between the reaction rate and the confinement energy. In the frame of Marcus theory and starting from basic assumptions, a theoretical model has been developed correlating the charge transfer mechanism to the confinement size. The model well explains the experimental findings, predicting, moreover, the existence of a resonance in the reaction rate, function of the confinement energy. © 2005 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Electrical and Electronic Engineering
Di Francia, G., Quercia, L., Rea, I., Maddalena, P., & Lettieri, S. (2005). Nanostructure reactivity: Confinement energy and charge transfer in porous silicon. Sensors and Actuators, B: Chemical, 111-112(SUPPL.), 117 - 124. https://doi.org/10.1016/j.snb.2005.07.005