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Type: 
Journal
Description: 
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.
Publisher: 
Elsevier
Publication date: 
11 Nov 2005
Authors: 

G Di Francia, L Quercia, I Rea, P Maddalena, S Lettieri

Biblio References: 
Volume: 111 Pages: 117-124
Origin: 
Sensors and Actuators B: chemical