SIZE CLASSIFICATION OF SILICON NANOCRYSTALS

We report on the synthesis of size-classified silicon nanocrystals by differential mobility classification of a polydisperse ultrafine silic on aerosol. Using the described technique, the average nanocrystal siz e can be tuned by simply adjusting an electric field. Samples of nonag glomerated silicon nanocrystals have been obtained and size control ha s been achieved within 15%-20% in the 2-10 nm size regime. (C) 1996 Am erican Institute of Physics.