Methods for producing light-emitting body containing silicon fine particles and light-emitting silicon fine particles

摘要

The present invention is a method for producing a light-emitting body containing silicon fine particles that emit visible light, comprising: a baking step of baking a mixture containing a silicon source and a carbon source in an inert atmosphere; a rapid cooling step of rapidly cooling a gas generated by baking the mixture to obtain a composite powder; and a removing step of removing a portion of the composite powder, wherein in the removing step, a portion of silicon monoxide and a portion of silicon dioxide are removed from the composite powder containing silicon fine particles, silicon monoxide, and silicon dioxide.

主权项

1. A method for producing a light-emitting body containing silicon particles that emit visible light, comprising:
a baking step of baking a mixture containing a silicon source and a carbon source in an inert atmosphere; a cooling step of cooling a gas generated by baking the mixture to obtain a composite powder at a temperature below 1600° C.; and a removing step of removing a portion of the composite powder using an acid consisting of hydrofluoric acid, wherein in the removing step, a portion of silicon monoxide and a portion of silicon dioxide are removed by only the acid consisting of hydrofluoric acid from the composite powder containing silicon particles, silicon monoxide, and silicon dioxide, and wherein the light-emitting body containing silicon particles has an average particle diameter of 1 μm or less.