Solidification conditions at the early stages for grain control of polycrystalline silicon ingot

Hirofumi Miyahara, Takafumi Nakashima, Kozo Wakasugi, Seiko Nara, Keisaku Ogi

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 引用 (Scopus)

抜粋

The influence of the shape of the crucible base and the solidification condition at an initial stage of unidirectional solidification on the microstructure of the polycrystalline silicon has been investigated. At the slow solidification velocity less than 10 ×10-6m/s, the thin columnar grains grew. However, in above the velocity around 40 ×10 -6m/s, the large grains grew at the base of the crucible. The crystal orientation of 〈211〉 or 〈101〉 was detected at the parallel to the surface of the crucible. Undercooling, anisotropy of growth direction and the twin reentrant corner might cause the priority solidification direction. However, the equiaxed structure was appeared and grains became to be fine at the middle of the crucible. Therefore, the double solidification velocity technique was used. There might be a maximum speed around 10 ×10-6 m/s at the early stage to maintain the large grain size.

元の言語英語
ホスト出版物のタイトルConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
出版者IEEE Computer Society
ページ1223-1226
ページ数4
ISBN(印刷物)1424400163, 9781424400164
DOI
出版物ステータス出版済み - 1 1 2006
イベント2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 - Waikoloa, HI, 米国
継続期間: 5 7 20065 12 2006

出版物シリーズ

名前Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
1

その他

その他2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
米国
Waikoloa, HI
期間5/7/065/12/06

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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  • これを引用

    Miyahara, H., Nakashima, T., Wakasugi, K., Nara, S., & Ogi, K. (2006). Solidification conditions at the early stages for grain control of polycrystalline silicon ingot. : Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (pp. 1223-1226). [4059857] (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4; 巻数 1). IEEE Computer Society. https://doi.org/10.1109/WCPEC.2006.279402