| Abstract Scope |
Dry processes such as CVD process, Spray pyrolysis process and PVD process have been developed for mass-production of Ni nanopowders applied to the internal electrode of MLCC at high production rate and low cost. However, the range of particle sizes that dry process can mass-produce is more than 50 nm, so that a development of new process for mass-production of 1-50 nm size nanoparticles are required. Thereby, we have invented a unique method named Flow Cell Reactor (FCR) to synthesize 1-50 nm nanoparticles at low cost with high productivity. In this study, various developments have been conducted to improve size distribution of InP-based QD such as modifying process conditions and optimizing raw material condition with FCR systems. We have successfully achieved InP which has very narrow size distribution and shows narrowest spectrum in the world. This FCR system can be applied also to mass-production of Ni nanopowders for the future generation of MLCC. |