| 摘要 |
A vitreous silica crucible for pulling single-crystal silicon, comprising a surface glass layer having a thickness of 100 mum from an inner surface of the crucible, and a glass layer provided below the surface glass layer in a thickness direction of the crucible and extending to a depth of 1 mm from the inner surface of the crucible. The concentration of OH groups in the surface glass layer is 90 ppm or less, and the concentration of OH groups in the glass layer is equal to or more than 90 ppm and equal to or less than 200 ppm. The bubble content in the glass layer is 0.1% or less.
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