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Process for determination of concentrations of metal impurities in Czochralski single crystal silicon
Process for determination of concentrations of metal impurities in Czochralski single crystal silicon
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机译:测定直拉单晶硅中金属杂质浓度的方法
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摘要
In the Czochralski method comprising charging polycrystalline silicon in a quartz crucible, heating and melting the polycrystal, immersing a seed single crystal in the melt, pulling the single crystal from the melt as single crystal silicon, a process for determination of concentrations of metal impurities in Czochralski single crystal silicon, wherein the solidification ratio of the single crystal silicon is maintained at a level of at least 95% and the analysis is effected on the residual melt left in the quartz crucible.
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