Patent ID: 7829159
Filing Date: 2010-11-09
Classification: C23C,H01J,H01L

Abstract:
1. A method of forming a multilayer resist structure, comprising: forming a first resist layer on a substrate; forming an organosilicon oxide film as a mask on the first resist layer by a method comprising: adjusting a temperature of a susceptor on which the substrate is placed to lower than 300° C.; introducing at least tetraethylorthosilicate (TEOS) gas and oxygen-supplying gas into a reactor in which the susceptor is disposed, wherein the reactor is a capacitively-coupled plasma CVD reactor wherein a showerhead and the susceptor are disposed parallel to each other, wherein the TEOS gas is introduced at a flow rate of 60 to 80 sccm, and the oxygen-supplying gas is introduced at a flow rate of 1,400 to 2,600 sccm; applying high-frequency RF power and low-frequency RF power between the showerhead and the susceptor, wherein the high-frequency RF power has a frequency of 10 MHz to 30 MHz and the low-frequency RF power has a frequency of 350 kHz to 500 kHz, the low-frequency RF power is 0.4 W/cm thereby depositing the organosilicon oxide film on the substrate; and forming a second resist layer on the organosilicon oxide film.