KR20070049174A - 선형-포커스된 레이저 빔을 사용하는 고체 상태 물질의레이저 도핑 방법 및 상기 방법에 기초하여 솔라-셀에미터를 생성하는 방법 - Google Patents
선형-포커스된 레이저 빔을 사용하는 고체 상태 물질의레이저 도핑 방법 및 상기 방법에 기초하여 솔라-셀에미터를 생성하는 방법 Download PDFInfo
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Abstract
Description
Claims (21)
- 고체 상태 물질에 도핑된 영역을 생성하는 방법에 있어서,먼저, 도펀트를 포함하는 매질이 고체 상태 물질의 표면과 접촉하게 되고, 레이저 펄스들을 이용하여 조사(beaming)함으로써, 상기 매질에 의해 접촉된 표면 아래의 상기 고체 상태 물질의 영역이 용융(melt)되므로, 상기 도펀트가 용융된 영역 안으로 확산되고, 상기 용융된 영역의 냉각 시에 재결정화(recrystallize)되며, 상기 레이저 빔은 상기 고체 상태 물질 상에 선형으로 포커스되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항에 있어서,상기 선형 포커스의 폭은 10 ㎛보다 좁은 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항에 있어서,상기 선형 포커스의 길이는 100 ㎛ 내지 10 mm의 범위 내에 있는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,상기 레이저의 파장은 상기 고체 상태 물질에서의 상기 레이저 빔의 흡수 길 이가 사전정의된 길이, 특히 1 ㎛에 대응하도록 선택되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 4 항에 있어서,상기 고체 상태 물질은 실리콘이고, 상기 레이저 빔의 파장은 600 nm 이하인 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,상기 펄스 길이는 용융된 고체 상태 물질 내의 도펀트 원자들의 열 확산 길이가 사전정의된 길이, 특히 1 ㎛에 대응하도록 선택되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 6 항에 있어서,상기 고체 상태 물질은 실리콘이고, 상기 펄스 길이는 100 ns 이하, 특히 50 ns 이하인 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항 내지 제 7 항 중 어느 한 항에 있어서,상기 고체 상태 물질에 걸쳐 빔 펜슬(beam pencil)이 스캐닝되어, 상기 고체 상태 물질과 상기 빔 펜슬 사이에 상대 이동을 생성하는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,상기 매질은 액체 또는 고체 코팅의 형태로 스핀 코팅에 의해 또는 스크린 또는 필름 프린팅에 의해 상기 표면 상에 증착되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항 내지 제 9 항 중 어느 한 항에 있어서,상기 매질은 스퍼터링에 의해 고체 코팅(6)의 형태로 증착되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 10 항에 있어서,상기 매질은 이전에 먼저 출발 기판(starting substrate: 1) 상에 증착되고, 그 후 제 1 스퍼터링 단계에서 상기 출발 기판(1)으로부터 스퍼터링되어 인터타겟(intertarget: 3) 상에 증착되고, 그 후 제 2 스퍼터링 단계에서 상기 인터타겟(3)으로부터 스퍼터링되어 도핑될 상기 고체 상태 물질(5) 상에 증착되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 11 항에 있어서,상기 인터타겟(3)은 실리콘 기판인 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 11 항 또는 제 12 항에 있어서,상기 매질은 도펀트 그 자체로 구성되고, 상기 출발 기판(1) 상에 파우더로서 증착되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항에 있어서, 또는 제 1 항 내지 제 13 항 중 어느 한 항에 있어서,상기 고체 상태 물질은 주 물질(main material)을 포함하고, 상기 주 물질(10)의 표면 상에는 간층(interlayer: 11)이 증착되며, 상기 간층(11) 상에는 상기 매질이 증착되는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 14 항에 있어서,상기 간층(11)은 패시베이션 층(passivation layer)인 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 14 항 또는 제 15 항에 있어서,상기 간층(11)은 상기 레이저 빔에 대해 비-반사 층(anti-reflex layer)으로서 기능하는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 14 항 내지 제 16 항 중 어느 한 항에 있어서,상기 간층(11)은 실리콘 질화물, 실리콘 이산화물 또는 비정질 실리콘을 포 함할 수 있거나, 이들 물질 중 하나에 기초하는 것을 특징으로 하는 도핑된 영역을 생성하는 방법.
- 제 1 항 내지 제 17 항 중 어느 한 항에 따른 반도체에 도핑된 영역을 생성하는 방법에 의해 솔라 셀(solar cell)의 에미터 영역을 생성하는 방법.
- 반도체와 금속 사이에 옴 접촉(ohmic contact)을 생성하는 방법에 있어서,제 1 항 내지 제 17 항 중 어느 한 항에 따른 상기 방법으로 솔라 셀 내에 도핑된 영역이 생성되고, 이후 상기 도핑된 영역 상에 금속화 층(metallized layer)이 증착되는 것을 특징으로 하는 옴 접촉을 생성하는 방법.
- 제 1 항 내지 제 19 항 중 어느 한 항에 따른 방법을 구현하는 장치에 있어서,펄스화된 레이저 빔 소스, 선형 포커스를 생성하는 원통 렌즈, 및 크기가 축소된 상기 선형 포커스를 상기 고체 상태 물질의 표면 상에 이미징하는 집광렌즈(objective)를 포함하는 것을 특징으로 하는 장치.
- 제 20 항에 있어서,기준점으로부터 상기 고체 상태 물질 표면의 간격을 측정하고, 집광렌즈와 고체 상태 물질 표면 간의 간격을 조절하여, 초점 위치가 초점심도(depth of focus) 내에서 상기 고체 상태 물질 표면 상에 유지되도록 하는 오토포커스 디바이스(autofocus)를 더 포함하는 것을 특징으로 하는 장치.
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Application Number | Priority Date | Filing Date | Title |
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DE102004036220A DE102004036220B4 (de) | 2004-07-26 | 2004-07-26 | Verfahren zur Laserdotierung von Festkörpern mit einem linienfokussierten Laserstrahl |
DE102004036220.3 | 2004-07-26 |
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KR20070049174A true KR20070049174A (ko) | 2007-05-10 |
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KR1020077004389A Ceased KR20070049174A (ko) | 2004-07-26 | 2005-07-21 | 선형-포커스된 레이저 빔을 사용하는 고체 상태 물질의레이저 도핑 방법 및 상기 방법에 기초하여 솔라-셀에미터를 생성하는 방법 |
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US (1) | US20080026550A1 (ko) |
EP (1) | EP1738402B1 (ko) |
JP (1) | JP2008507849A (ko) |
KR (1) | KR20070049174A (ko) |
CN (1) | CN101053065A (ko) |
AT (1) | ATE408895T1 (ko) |
DE (2) | DE102004036220B4 (ko) |
ES (1) | ES2314688T3 (ko) |
WO (1) | WO2006012840A1 (ko) |
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KR101155563B1 (ko) * | 2009-05-27 | 2012-06-19 | 주식회사 효성 | 레이저를 이용한 태양전지 제조방법 |
CN115512592A (zh) * | 2022-09-26 | 2022-12-23 | 陕西师范大学 | 一种判断固体化合物结晶终点的装置和方法 |
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US7057256B2 (en) | 2001-05-25 | 2006-06-06 | President & Fellows Of Harvard College | Silicon-based visible and near-infrared optoelectric devices |
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CN115512592A (zh) * | 2022-09-26 | 2022-12-23 | 陕西师范大学 | 一种判断固体化合物结晶终点的装置和方法 |
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DE502005005402D1 (de) | 2008-10-30 |
ES2314688T3 (es) | 2009-03-16 |
EP1738402A1 (de) | 2007-01-03 |
CN101053065A (zh) | 2007-10-10 |
WO2006012840A1 (de) | 2006-02-09 |
JP2008507849A (ja) | 2008-03-13 |
US20080026550A1 (en) | 2008-01-31 |
DE102004036220B4 (de) | 2009-04-02 |
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