METHOD FOR PRODUCING OF NANO CRYSTALLINE SILICON

摘要

PURPOSE: A manufacturing method of nano-crystal silicon is provided to synthesize high purity nanocrystalline silicon having luminosity and redispersibility through simple processes. CONSTITUTION: A manufacturing method of the nano-crystal silicon comprises the following steps: adding a reducing agent and a capping agent to an organic solvent; manufacturing capped silicon dispersed solution by adding tetraethoxysilane(TEOS) or tetramethoxysilane(TMOS); adding a phase-separation solvent to the silicon dispersed solution; and separating the silicon solution from the reaction mixture of the previous step. The capping reagent is selected from C5-C20 alcohol, amine, thiol or fatty acid. 2-6 moles of the reducing agent is added for 1mole of tetraethoxysilane(TEOS) or tetramethoxysilane(TMOS). 0.01-100 moles of the capping reagent is added for 1 mole of tetraethoxysilane(TEOS) or tetramethoxysilane(TMOS).