Patent ID: 7517817
Filing Date: 2009-04-14
Classification: H01L

Abstract:
1. A method of forming a silicon oxide layer on a semiconductor substrate comprising: forming a spin-on-glass (SOG) layer on the semiconductor substrate, the SOG layer including polysilazane; and treating the SOG layer with an oxidant solution to convert the polysilazane to silicon oxide, the oxidant solution including at least one selected from the group consisting of an aqueous ozone solution, an aqueous solution of hydrogen peroxide and ammonium hydroxide, permanganates, hypochlorites, chlorites, chlorates, perchlorates, hypobromites, bromites, bromates, hypoiodites, iodites, iodates, and an aqueous solution of hydrogen peroxide having the concentration of hydrogen peroxide between about 0.5 weight percent and about 30 weight percent, wherein the aqueous ozone solution comprises the concentration of ozone being between about 1 ppm and about 200 ppm, and the aqueous solution of hydrogen peroxide and ammonium hydroxide comprises the concentration of hydrogen peroxide being between about 3 weight percent and about 10 weight percent and the concentration of the ammonium hydroxide being between about 0.5 weight percent and about 5 weight percent.