Method of manufacturing silicon oxide

1. A method of manufacturing silicon oxide, the method comprising:

mixing silicon and silicon dioxide to obtain a mixture of silicon and silicon dioxide;

placing the mixture of silicon and silicon dioxide in a reactor of a reaction chamber;

depressurizing a pressure of the reaction chamber to obtain a high degree of vacuum while increasing a temperature in the reaction chamber to a final reaction temperature;

providing a reducing atmosphere including a mixed gas of H2/N2 having a hydrogen content of 2 % to the reaction chamber; and

reacting the mixture of silicon and silicon dioxide in the reaction chamber with the reducing atmosphere,

wherein the final reaction temperature is in a range of 1300° C. to 1500° C. and is held for 2 hours to 4 hours,

wherein the final reaction temperature is achieved by gradually increasing the temperature in the reaction chamber from room temperature to 800° C. for 1 hour and 30 minutes and from 800° C. to 1400° C. for 2 hours and 30 minutes,

wherein the mixed gas of H2/N2 is supplied at a flow rate of 800 sccm,

wherein the high degree of vacuum is at 1.2×10 −1 torr,

wherein the high degree of vacuum is maintained until the reaction of silicon and silicon dioxide is completed, and the reducing atmosphere is continuously injected into one side of the reaction chamber and continuously removed from another side of the reaction chamber, and

wherein the silicon oxide is SiO x , 0<x≦0.9.

2. The method of claim 1 , wherein the reducing atmosphere is supplied into the reaction chamber after the pressure in the reaction chamber reaches the high degree of vacuum.

3. The method of claim 1 , wherein x=0.9.