Global patent index - EP 1021838 A1

EP 1021838 A1 2000-07-26 - METHOD AND DEVICE FOR PRODUCING A WAFER FROM A SEMICONDUCTING MATERIAL

Title (en)

METHOD AND DEVICE FOR PRODUCING A WAFER FROM A SEMICONDUCTING MATERIAL

Title (de)

VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN EINER SCHEIBE AUS HALBLEITENDEM MATERIAL

Title (fr)

PROCEDE ET DISPOSITIF POUR LA FABRICATION D'UNE TRANCHE EN MATERIAU SEMI-CONDUCTEUR

Publication

EP 1021838 A1 (DE)

Application

EP 98947547 A

Priority

  • DE 19742653 A
  • EP 9806082 W

Abstract (en)

[origin: DE19742653A1] The invention relates to a method for producing a wafer from a semiconducting material, especially a silicon wafer, for a solar cell. According to the inventive method, a melt of the semiconducting material (8) sets to form the wafer. The invention is characterised in that said melt is exposed to an electric and/or magnetic field at least during the start of the setting process.

IPC 1-7 (main, further and additional classification)

H01L 31/18; C30B 11/00

IPC 8 full level (invention and additional information)

H01L 31/04 (2006.01); C30B 11/00 (2006.01); C30B 29/64 (2006.01); H01L 31/18 (2006.01)

CPC (invention and additional information)

C30B 29/06 (2013.01); C30B 11/00 (2013.01); H01L 31/1804 (2013.01); Y02E 10/547 (2013.01); Y02P 70/521 (2015.11)

Citation (search report)

See references of WO 9917381A1

Designated contracting state (EPC)

AT CH DE ES FR GB IT LI SE

EPO simple patent family

DE 19742653 A1 19990401; CN 1271465 A 20001025; EP 1021838 A1 20000726; JP 2001518720 A 20011016; WO 9917381 A1 19990408

INPADOC legal status

2007-05-11 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Ref Legal Event Code: WD

- Ref Document Number: 1031784

- Country of Ref Document: HK

2002-10-09 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020403

2000-08-16 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

- Ref Legal Event Code: DAX

2000-07-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000331

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE ES FR GB IT LI SE

2000-07-26 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: LV PAYMENT 20000331