| 摘要 |
PURPOSE: A silicon single crystal pulling quartz glass crucible is provided to rapidly melt a silicon material by optimizing the radial distribution of bubbles included in an opaque quartz glass layer. CONSTITUTION: A silicon single crystal pulling quartz glass crucible comprises a side wall portion(10A), a bent portion(10C), and a bottom portion(10B). The crucible additionally includes a transparent quartz glass layer(12) formed on the inner side of the crucible, and an opaque quartz glass layer(11) formed on the outer side of the crucible. The bubble content rate of the transparent quartz glass layer is less than 0.1%.
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