Verfahren zur Herstellung einer verbesserte Solarzelle aus säulenförmigem, körnigem, polycrystallinem Silizium
- 申请公布号：
- DE69325764(D1)
- 申请号：
- DE1993625764
- 申请日期：
- 1993.10.06
- 申请公布日期：
- 1999.09.02
- 申请人：
- ASTROPOWER INC.
- 发明人：
- HALL, ROBERT B.;BARNETT, ALLEN M.;BROWN, JACOB E.;CHECCHI, JOSEPH C.;FORD, DAVID H.;KENDALL, CHRISTOPHER L.;MULLIGAN, WILLIAM P.;RAND, JAMES A.;RUFFINS, TODD R.
- 分类号：
- H01L31/04;H01L21/36;H01L31/036;H01L31/0368;H01L31/18;(IPC1-7):H01L31/18
- 主分类号：
- H01L31/04
- 摘要：
- <p>The invention relates to techniques for manufacturing columnar-grained polycrystalline sheets which have particular utility as substrates or wafers for solar cells. The sheet is made by applying granular silicon to a setter material which supports the granular material. The setter material and granular silicon are subjected to a thermal profile all of which promote columnar growth by melting the silicon from the top downwardly. The thermal profile sequentially creates a melt region at the top of the granular silicon and then a growth region where both liquid and a growing polycrystalline sheet layer coexist. An annealing region is created where the temperature of the grown polycrystalline silicon sheet layer in controllably reduced to effect stress relief. <IMAGE></p>
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