KR20080098322A - 다결정질 고순도 실리콘 과립의 연속 제조 방법 - Google Patents
다결정질 고순도 실리콘 과립의 연속 제조 방법 Download PDFInfo
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- KR20080098322A KR20080098322A KR1020080041232A KR20080041232A KR20080098322A KR 20080098322 A KR20080098322 A KR 20080098322A KR 1020080041232 A KR1020080041232 A KR 1020080041232A KR 20080041232 A KR20080041232 A KR 20080041232A KR 20080098322 A KR20080098322 A KR 20080098322A
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- 208000012839 conversion disease Diseases 0.000 claims description 4
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- 150000001875 compounds Chemical class 0.000 claims description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
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- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 239000011856 silicon-based particle Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
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- 230000001276 controlling effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
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- 239000012212 insulator Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- 229910000077 silane Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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- 238000013459 approach Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
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- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
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- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
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- 238000009491 slugging Methods 0.000 description 1
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- 238000004781 supercooling Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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Classifications
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- 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
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/06—Silicon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/021—Preparation
- C01B33/027—Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Silicon Compounds (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Description
Claims (21)
- 유동상 반응기에서 반응 가스를 실리콘(silicon) 과립 상에 증착시켜 고순도 폴리실리콘(polysilicon) 과립을 제조하는 방법으로서,(I) 반응기는 차례로 배치된 2 이상의 구역을 포함하는 반응기 공간을 구비하고,(II) 개별 노즐을 이용하여 실리콘 과립에 실리콘 무함유 가스를 도입하여 하부 구역을 약하게 유동화시키며,(III) 추가 구역을 제1 구역과 직접 접촉하도록 연결하고,(IV) 이 구역을 외측으로 경계를 이루는 벽을 통해 가열하며,(V) 1개 또는 다수의 노즐을 사용하여 실리콘 함유 반응 가스를 반응기에 형성된 반응 구역에 수직 상향 가스 제트로서 고속으로 도입하고(여기서 노즐 위쪽에서 국소 반응 가스 제트는 기포 형성 유동상 형태로 둘러싸이고, 유동상 내에서 실리콘 함유 가스는 입자 표면에서 분해되어 입자 성장을 초래함),(VI) 이 경우 반응 가스가 유동상 벽 또는 유동상 표면에 도달하기 전에 화학 평형 전환 상태로 거의 완전히 반응하도록, 반응 가스를 도입하는 것을 포함하는, 고순도 폴리실리콘 과립의 제조 방법.
- 제1항에 있어서, 반응 가스가 하부 구역의 유동화를 위한 희석 가스용 노즐까지 역유동하여 벽 증착에 의해 노즐을 차단할 수 없도록 하부 구역의 높이를 설 계하는 것인 방법.
- 제2항에 있어서, 하부 구역의 높이는 50 내지 300 mm의 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 하부 구역 내 가스 속도가 최소 유동화 속도의 1.2 내지 2.3 배가 되도록 하는 양으로 희석 가스를 공급하는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 노즐로부터 나오는 희석 가스의 최대 출구 속도는 20 내지 200 m/s 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 반응 가스로서 일반적인 화합물 SiHxCly의 1 이상의 실리콘 함유 가스, 또는 희석 가스로서 수소, 질소 및 아르곤으로 구성된 군에서 선택되는 1 이상의 실리콘 무함유 가스와 상기 가스의 혼합물을 사용하는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 수소로 희석한 SiH4, SiCl4 또는 SiHCl3을 반응 가스로서 사용하는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 반응 가스 중 트리클로로실란의 몰 분율은 0.2 내지 0.8 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 전체 반응기 횡단면에 걸쳐 하부 구역으로부터 나오는 희석 가스를 포함하는 평균 몰 분율은 0.15 내지 0.4 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 노즐 시스템의 출구에서 가스 또는 가스 혼합물의 국소 가스 속도는 1 내지 140 m/s 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 반응 구역에서 평균 가스 속도는 최소 유동화 속도의 2 내지 8 배 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 노즐 거리(제트 축 사이의 수평 거리) 대 노즐 직경(유동상으로 나가는 가스 출구 위치에서의 노즐의 내부 직경)의 비가 7.5를 초과하도록 노즐 사이의 최소 거리를 선택해야 하는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 환상 노즐에서의 출구 속도는 중앙 노즐에서의 출구 속도 미만인 것인 방법.
- 제13항에 있어서, 환상 노즐에서의 속도는 하기 범위에 있는 것인 방법:0.4*v중앙 노즐 < v환상 노즐 < 0.8*v중앙 노즐.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 유동상의 상부 구역에서 가스의 체류 시간은 0.1 내지 10 초 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 유동상의 상 온도는 890 내지 1400℃ 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 반응기 압력은 0 내지 7 바 과압(excess pressure) 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 유동상의 작동은 정상 상태의 입자 크기 분포를 가지며, 입자의 크기는 150 내지 7000 ㎛이고, 분포의 사우터(Sauter) 직경은 850 내지 1500 ㎛ 범위에 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 온라인 배기 가스 분석 시스템을 반응 전환의 측정에 사용하며, 이는 반응기 내 소정의 입자 크기 분포 및 유동상 내 과립의 양이 장기간에 걸쳐 안정하게 그리고 정상 상태로 유지될 수 있도록, 반응 및 공급된 희석 가스의 양의 검출 및 입자 개체에 대한 전산 모델과 조합하여, 시드 입자의 첨가 및 생성물 분리(take-off)를 제어할 수 있는 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 추가의 분류 단계가 필요 없이, 150 ㎛보다 작은 소형 입자의 분율이 0.1 질량% 미만인 것인 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 증착된 폴리실리콘 과립은 구형도 값(sphericity value)이 0.85 내지 1 [-] 범위인 뚜렷한 구체 형상을 갖는 것인 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007021003A DE102007021003A1 (de) | 2007-05-04 | 2007-05-04 | Verfahren zur kontinuierlichen Herstellung von polykristallinem hochreinen Siliciumgranulat |
| DE102007021003.7 | 2007-05-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20080098322A true KR20080098322A (ko) | 2008-11-07 |
| KR101026815B1 KR101026815B1 (ko) | 2011-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020080041232A Active KR101026815B1 (ko) | 2007-05-04 | 2008-05-02 | 다결정질 고순도 실리콘 과립의 연속 제조 방법 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8722141B2 (ko) |
| EP (1) | EP1990314B1 (ko) |
| JP (1) | JP4971240B2 (ko) |
| KR (1) | KR101026815B1 (ko) |
| CN (1) | CN101298329B (ko) |
| AT (1) | ATE538069T1 (ko) |
| DE (1) | DE102007021003A1 (ko) |
| ES (1) | ES2376695T3 (ko) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012050341A3 (ko) * | 2010-10-12 | 2012-06-21 | (주)기술과가치 | 입자형 다결정실리콘 제조용 유동층 반응기 및 이를 이용한 다결정 실리콘 제조방법 |
| KR20120094038A (ko) * | 2009-11-18 | 2012-08-23 | 알이씨 실리콘 인코포레이티드 | 유동층 반응기 |
| KR20170108881A (ko) * | 2016-03-18 | 2017-09-27 | 주식회사 엘지화학 | 폴리실리콘 제조를 위한 초고온 석출 공정 |
| US10632438B2 (en) | 2014-10-28 | 2020-04-28 | Wacker Chemie Ag | Fluidized bed reactor and process for producing polycrystalline silicon granules |
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- 2008-04-29 US US12/111,291 patent/US8722141B2/en active Active
- 2008-05-02 KR KR1020080041232A patent/KR101026815B1/ko active Active
- 2008-05-04 CN CN2008100928166A patent/CN101298329B/zh active Active
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120094038A (ko) * | 2009-11-18 | 2012-08-23 | 알이씨 실리콘 인코포레이티드 | 유동층 반응기 |
| WO2012050341A3 (ko) * | 2010-10-12 | 2012-06-21 | (주)기술과가치 | 입자형 다결정실리콘 제조용 유동층 반응기 및 이를 이용한 다결정 실리콘 제조방법 |
| US10632438B2 (en) | 2014-10-28 | 2020-04-28 | Wacker Chemie Ag | Fluidized bed reactor and process for producing polycrystalline silicon granules |
| KR20170108881A (ko) * | 2016-03-18 | 2017-09-27 | 주식회사 엘지화학 | 폴리실리콘 제조를 위한 초고온 석출 공정 |
| KR20230038280A (ko) * | 2020-07-17 | 2023-03-17 | 와커 헤미 아게 | 다결정 실리콘 과립의 제조 방법 |
| WO2025143403A1 (ko) * | 2023-12-27 | 2025-07-03 | 오씨아이 주식회사 | 실리콘 마이크로 입자의 제조방법, 제조장치 및 이에 의해 제조된 실리콘 마이크로 입자 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1990314B1 (de) | 2011-12-21 |
| ATE538069T1 (de) | 2012-01-15 |
| CN101298329A (zh) | 2008-11-05 |
| US20080299291A1 (en) | 2008-12-04 |
| EP1990314A3 (de) | 2009-08-12 |
| US8722141B2 (en) | 2014-05-13 |
| CN101298329B (zh) | 2012-01-04 |
| ES2376695T3 (es) | 2012-03-16 |
| JP2008273831A (ja) | 2008-11-13 |
| DE102007021003A1 (de) | 2008-11-06 |
| EP1990314A2 (de) | 2008-11-12 |
| JP4971240B2 (ja) | 2012-07-11 |
| KR101026815B1 (ko) | 2011-04-04 |
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