Method for producing silicon fine particles and method for controlling particle diameter of silicon fine particles

摘要

The present invention addresses the aims and problems of providing a method of producing silicon fine particles and a method of controlling the particle size of silicon fine particles, which enable silicon fine particles having a uniform particle size to be efficiently produced. The present invention is characterized in that silicon particles are immersed in an etching solution, a light having greater energy than the band gap energy of the silicon particles is irradiated onto the silicon particles immersed in the etching solution, and thereby silicon fine particles with a smaller particle size than the silicon particles are produced while controlling the particle size.