科研之友
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摘要
A Si nanoparticle surface was etched in an aqueous HE solution under monochromatic light irradiation in the infrared-to-visible region. The average size of the nanoparticles was controlled by changing the photon energy of the irradiating light. After prolonged photoetching, the size distribution of the nanoparticles was narrowed significantly. The correlation between the photon energy and the final size of the nanoparticles indicated that the band gap energy change due to the quantum size effect played an important role in controlling nanoparticle size.
- 出版日期2011-11-5
