拋光工藝對硅片表面Haze值的影響
[Abstract]:With the rapid development of VLSI, more and more attention has been paid to the influence of the Haze value on the modern semiconductor device process. The effect of finishing process parameters on the surface Haze value of silicon wafer was studied experimentally. The results show that with the prolongation of polishing time, the removal amount of silicon increases and the Haze value of silicon wafer decreases gradually, and the synergistic effect of mechanical and chemical action on Haze value is also significant. With the decrease of the polishing temperature and the volume flow of the polishing liquid, the chemical action is weakened, and the Haze value of the wafer surface decreases gradually. With the increase of polishing pressure, mechanical action gradually plays a leading role, and the Haze value of silicon wafer surface decreases gradually. However, when the Haze value is reduced to a certain value, with the increase of the silicon removal amount, the temperature of the polishing liquid, the volume flow rate of the polishing fluid and the polishing pressure increase, the Haze value on the surface of the silicon wafer remains basically unchanged.
【作者單位】: 有研半導(dǎo)體材料有限公司;
【基金】:國家科技重大專項資助項目(2008ZX02401)
【分類號】:TN305.2
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