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Oxygen precipitation in heavily phosphorus-doped silicon wafer annealed at high temperatures

机译:高温退火的重掺杂磷的硅片中的氧沉淀

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摘要

Oxygen precipitation in heavily phosphorus-doped (P-doped) Czochralski (CZ) silicon subjected to single-step annealing at high temperatures in the range of 1050-1150℃ has been investigated. It was indicated that in the heavily P-doped CZ silicon there were more grown-in oxygen precipitates, thus promoting the generation of induced defects and accelerating the Ostwald ripening of oxygen precipitates during the high temperature annealing, in comparison with the control lightly P-doped CZ silicon with comparable initial oxygen concentration and thermal history. Moreover, it was found that, during the annealing at 1050℃, oxygen precipitation in the outer region about 2.5 cm in width was noticeably retarded with respect to that in the inner region across the heavily P-doped CZ silicon wafer. The mechanism for the enhanced formation of grown-in oxygen precipitates and the retardation of oxygen precipitation at high temperature, as mentioned above, has been tentatively explained.
机译:研究了重掺杂磷(P掺杂)的切克劳斯基(CZ)硅在1050-1150℃的高温下进行单步退火的过程中的氧析出。结果表明,与轻度P-掺杂相比,在高P掺杂的CZ硅中,有更多的氧析出物生长,从而促进了高温退火过程中氧缺陷的诱导缺陷的产生并加速了Ostwald熟化。掺杂的CZ硅具有可比的初始氧浓度和热历史。此外,发现在1050℃的退火期间,相对于整个重掺杂P的CZ硅晶片的内部区域中的氧沉淀,在约2.5cm宽的外部区域中的氧沉淀被显着延迟。如上所述,已经尝试性地解释了在高温下增加形成的氧沉淀物的形成和延迟氧沉淀的机理。

著录项

  • 来源
    《Materials Science and Engineering》 |2009年第2009期|145-148|共4页
  • 作者单位

    State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China;

    State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China;

    State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China;

    State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China;

    State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    heavily doped czochralski silicon; phosphorus; oxygen precipitation;

    机译:重掺杂czochralski硅;磷;氧气沉淀;

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