Mariotti, D, Svrcek, V, Hamilton, JWJ, Schmidt, M and Kondo, M (2012) Silicon Nanocrystals in Liquid Media: Optical Properties and Surface Stabilization by Microplasma-Induced Non-Equilibrium Liquid Chemistry. Advanced Functional Materials, 22 (5). pp. 954-964. [Journal article]
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Surface engineering of silicon nanocrystals directly in water or ethanol by atmospheric-pressure dc microplasma is reported. In both liquids, microplasma processing stabilizes the optoelectronic properties of silicon nanocrystals. The microplasma treatment induces non-equilibrium liquid chemistry that passivates the silicon nanocrystals surface with oxygen-/organic-based terminations. In particular, the microplasma treatment in ethanol drastically enhances the silicon nanocrystals photoluminescence intensity and causes a clear red-shift (â��80 nm) of the photoluminescence maximum. The photoluminescence properties are stable after several days of storage in either ethanol or water. The surface chemistry induced by the microplasma treatment is analyzed and discussed.
|Item Type:||Journal article|
|Keywords:||silicon quantum dots, microplasma, photoluminescence|
|Faculties and Schools:||Faculty of Computing & Engineering|
Faculty of Computing & Engineering > School of Engineering
|Research Institutes and Groups:||Engineering Research Institute|
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
|Deposited By:||Professor Davide Mariotti|
|Deposited On:||07 Mar 2012 11:43|
|Last Modified:||09 Dec 2015 11:02|
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