GB1045664A - A process for melting a rod of polycrystalline material zone-by-zone - Google Patents
A process for melting a rod of polycrystalline material zone-by-zoneInfo
- Publication number
- GB1045664A GB1045664A GB26676/65A GB2667665A GB1045664A GB 1045664 A GB1045664 A GB 1045664A GB 26676/65 A GB26676/65 A GB 26676/65A GB 2667665 A GB2667665 A GB 2667665A GB 1045664 A GB1045664 A GB 1045664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- zone
- passed
- cylindrical
- melting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
- C30B13/28—Controlling or regulating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
- Y10T117/1076—Apparatus for crystallization from liquid or supercritical state having means for producing a moving solid-liquid-solid zone
- Y10T117/1088—Apparatus for crystallization from liquid or supercritical state having means for producing a moving solid-liquid-solid zone including heating or cooling details
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
- Silicon Compounds (AREA)
Abstract
A thin crystalline seed is joined to the tapered end of a thick polycrystalline rod of silicon by means of a pancake induction coil and a molten zone is passed through the rod from the joint by means of a cylindrical induction coil. The rod is maintained vertical with the tapered end at the top or bottom during the process. The pancake coil may be removed before commencement of zone-melting or kept stationary and open-circuited or connected in parallel with one or more condensers. An incandescent zone may be passed through the rod during return of the cylindrical coil. One or more further molten zones may be passed through the rod, the zones being formed by the cylindrical and/or pancake coils. The diameter of the seed and rod may be 6 and 40 mm respectively.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES91655A DE1224273B (en) | 1964-06-23 | 1964-06-23 | Device for crucible-free zone melting |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1045664A true GB1045664A (en) | 1966-10-12 |
Family
ID=7516653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26676/65A Expired GB1045664A (en) | 1964-06-23 | 1965-06-23 | A process for melting a rod of polycrystalline material zone-by-zone |
Country Status (6)
Country | Link |
---|---|
US (1) | US3310384A (en) |
BE (1) | BE665683A (en) |
CH (1) | CH421902A (en) |
DE (1) | DE1224273B (en) |
GB (1) | GB1045664A (en) |
NL (1) | NL6503268A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3518629A (en) * | 1964-02-06 | 1970-06-30 | Computron Corp | Recirculating memory timing |
DE1519908A1 (en) * | 1966-12-30 | 1970-07-02 | Siemens Ag | Device for producing a crystalline rod by zone melting without a crucible |
US3776703A (en) * | 1970-11-30 | 1973-12-04 | Texas Instruments Inc | Method of growing 1-0-0 orientation high perfection single crystal silicon by adjusting a focus coil |
DE2508369A1 (en) * | 1975-02-26 | 1976-09-02 | Siemens Ag | PROCESS FOR MANUFACTURING DISC-SHAPED SILICON BODIES, IN PARTICULAR FOR SOLAR CELLS |
US5033948A (en) * | 1989-04-17 | 1991-07-23 | Sandvik Limited | Induction melting of metals without a crucible |
US5003551A (en) * | 1990-05-22 | 1991-03-26 | Inductotherm Corp. | Induction melting of metals without a crucible |
US5319670A (en) * | 1992-07-24 | 1994-06-07 | The United States Of America As Represented By The United States Department Of Energy | Velocity damper for electromagnetically levitated materials |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1061527B (en) * | 1953-02-14 | 1959-07-16 | Siemens Ag | Process for zone-wise remelting of rods and other elongated workpieces |
US2972525A (en) * | 1953-02-26 | 1961-02-21 | Siemens Ag | Crucible-free zone melting method and apparatus for producing and processing a rod-shaped body of crystalline substance, particularly semiconductor substance |
US2897329A (en) * | 1957-09-23 | 1959-07-28 | Sylvania Electric Prod | Zone melting apparatus |
US3117859A (en) * | 1957-12-30 | 1964-01-14 | Westinghouse Electric Corp | Zone refining process |
US3046100A (en) * | 1958-01-20 | 1962-07-24 | Du Pont | Zone melting of semiconductive material |
US3023091A (en) * | 1959-03-02 | 1962-02-27 | Raytheon Co | Methods of heating and levitating molten material |
US3134700A (en) * | 1959-04-22 | 1964-05-26 | Siemens Ag | Dislocation removal by a last pass starting at a location displaced from the original seed into the grown crystal |
NL112832C (en) * | 1959-05-08 | |||
US2992311A (en) * | 1960-09-28 | 1961-07-11 | Siemens Ag | Method and apparatus for floatingzone melting of semiconductor rods |
GB926487A (en) * | 1960-11-25 | 1963-05-22 | Dorman & Smith Ltd | Improvements in and relating to electrical fuse assemblies |
-
1964
- 1964-06-23 DE DES91655A patent/DE1224273B/en active Pending
-
1965
- 1965-03-15 NL NL6503268A patent/NL6503268A/xx unknown
- 1965-05-17 CH CH683265A patent/CH421902A/en unknown
- 1965-05-26 US US458944A patent/US3310384A/en not_active Expired - Lifetime
- 1965-06-21 BE BE665683D patent/BE665683A/xx unknown
- 1965-06-23 GB GB26676/65A patent/GB1045664A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE665683A (en) | 1965-12-21 |
CH421902A (en) | 1966-10-15 |
US3310384A (en) | 1967-03-21 |
NL6503268A (en) | 1965-12-24 |
DE1224273B (en) | 1966-09-08 |
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