KR100744219B1 - 전이 금속 질화물 박막의 증착 방법 - Google Patents
전이 금속 질화물 박막의 증착 방법 Download PDFInfo
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- KR100744219B1 KR100744219B1 KR1020027004825A KR20027004825A KR100744219B1 KR 100744219 B1 KR100744219 B1 KR 100744219B1 KR 1020027004825 A KR1020027004825 A KR 1020027004825A KR 20027004825 A KR20027004825 A KR 20027004825A KR 100744219 B1 KR100744219 B1 KR 100744219B1
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Abstract
Description
화학 기상 증착 방법(이후, "CVD"로 지칭됨)에서, 소오스 재료는 일반적으로 반응 공간으로 공급되고, 기판과 접촉하게 될 때 서로 반응하게 된다. 또한 소정의 모든 반응종을 함유하는 하나의 소오스 재료를 CVD 반응로에 공급하고, 거의 열적으로 분해하는 온도까지 가열할 수 있다. 가열된 가스가 기판 표면과 접촉할 때, 분해 반응(cracking reaction)이 발생하고 필름이 형성된다. 전술한 설명으로부터 명백한 것처럼, CVD에서 반응 공간 내의 상이한 소오스 재료의 농도는 필름의 성장을 결정한다.
Claims (27)
- - 금속 소오스 재료;- 상기 금속 소오스 재료를 환원시킬 수 있는 환원제; 및- 상기 환원된 금속 소오스 재료와 반응할 수 있는 질소 소오스 재료;의 증기상 펄스들이 교번적으로 그리고 순차적으로 반응 공간으로 공급되어 기판과 접촉하며, 상기 반응로 공간이 매 펄스 후 불활성 가스로 세정되는, 원자층 증착(ALD) 공정에 의한 기판 상에 금속 질화물 박막의 형성 방법에 있어서,상기 기판 표면에 결합된 상기 금속 소오스 재료와 반응할 때 가스상 반응 부산물을 형성할 수 있는 붕소 화합물을 환원제로서 사용하는 단계를 포함하는 것을 특징으로 하는,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 펄스 사이클이 필수적으로,- 증기상의 금속 소오스 화학물 펄스를 불활성 캐리어 가스에 의해 상기 반응 공간 내에 공급하는 단계,- 상기 반응 공간을 불활성 가스로 세정하는 단계,- 증기상의 붕소 소오스 화학물 펄스를 불활성 캐리어 가스에 의해 상기 반응 공간 내로 공급하는 단계,- 상기 반응 공간을 불활성 가스로 세정하는 단계,- 증기상의 질소 소오스 화학물 펄스를 상기 반응 공간 내로 공급하는 단계, 및- 상기 반응 공간을 불활성 가스로 세정하는 단계를 포함하는,금속 질화물 박막의 형성 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 금속 소오스 재료의 금속이 W, Mo, Cr, Ta, Nb, V, Hf, Zr, 및 Ti으로 구성된 군으로부터 선택되는,금속 질화물 박막의 형성 방법.
- 제 3 항에 있어서,상기 금속 소오스 재료의 금속 화합물이 불화물, 염화물, 브롬화물 또는 요오드화물을 포함하는 할로겐화물과; 알킬아미노, 시클로펜타디에닐, 디티오카르바메이트 또는 베타디케토네이트를 포함하는 금속 유기 화합물을 포함하는 군으로부터 선택되는,금속 질화물 박막의 형성 방법.
- 제 3 항에 있어서,상기 금속 소오스 재료가,- WFx, WCly, WBrm 또는 WIn(여기서 x, y, m 및 n은 1에서 6까지의 정수)을 포함하는 텅스텐 할로겐화물,- 텅스텐 헥사카르보닐 W(CO)6 또는 트리카르보닐(메시틸렌)텅스텐을 포함하는 텅스텐 카르보닐,- 비스(시클로펜타디에닐) 텅스텐 디하이드라이드, 비스(시클로펜타디에닐)텅스텐 디클로라이드 또는 비스(시클로펜타디에닐)디텅스텐 헥사카르보닐을 포함하는 텅스텐 시클로펜타디에닐, 및- 텅스텐 β-디케토네이트로 구성된 군으로부터 선택된 텅스텐 화합물인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 화학식(Ⅰ) BnHn+x인 보란과 화학식(Ⅱ) BnHm인 보란 및 그 착물을 포함하는 군으로부터 선택되며,화학식(Ⅰ)에서, n은 1에서 10까지의 정수이고, x는 짝수이며,화학식(Ⅱ)에서, m은 1에서 10까지의 정수이고, m은 n과 상이하며 1에서 10까지의 정수인,금속 질화물 박막의 형성 방법.
- 제 6 항에 있어서,상기 보란은 화학식 BnHn+4의 니도-보란, 화학식 BnHn+6의 아라크노-보란, 화학식 BnHn+8의 하이포-보란 및 컨정크토-보란 BnHm을 포함하는 군으로부터 선택되며, 상기 n 및 m은 1 내지 6의 정수인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 화학식(Ⅳ) C2BnHn+x에 따른 카르보란을 포함하는 군으로부터 선택되며, 상기 n은 1에서 10까지의 정수이며, x는 짝수인,금속 질화물 박막의 형성 방법.
- 제 8 항에 있어서,상기 카르보란은 클로조-카르보란(C2BnHn+2), 니도-카르보란(C2BnHn+4) 및 아라크노-카르보란(C2BnHn+6)을 포함하는 군으로부터 선택되며, 상기 n은 1 내지 10까지이 정수인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 화학식(Ⅴ) R3NBX3에 따른 아민 보란 첨가 생성물을 포함하는 군으로부터 선택되며, 상기 R은 선형 또는 가지형 C1-C10 알킬 또는 H이고, X는 선형 또는 가지형 C1-C10 알킬, H 또는 할로겐인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 B에 대한 하나 이상의 치환체가 화학식(Ⅵ) R2N에 따른 아미노기인 아미노보란을 포함하는 군으로부터 선택되며, 상기 R은 선형 또는 가지형 C1-C10 알킬 또는 치환된 또는 치환되지 않은 아릴기인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 알킬 붕소 및 알킬 보란을 포함하는 군으로부터 선택되며, 상기 알킬은 선형 또는 가지형 C1-C10 알킬인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 B2F4, B2Cl4 및 B2Br4를 포함하는 붕소 할로겐화물을 포함하는 군으로부터 선택되는,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 화학식(Ⅲ) BnXn의 할로겐보란을 포함하는 군으로부터 선택되며, 상기 X는 Cl 또는 Br이며, 상기 X가 Cl일 때 n은 4, 8 내지 12이며, 상기 X가 Br일 때 n은 7 내지 10인,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 시클릭 보라진(-BH-NH-)3와 그 휘발성 유도체를 포함하는 군으로부터 선택되는,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 붕소 화합물은 보란 할로겐화물 및 그 착물을 포함하는 군으로부터 선택되는,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 질소 소오스 재료는,- 암모니아(NH3), 및 할로겐화물염을 포함하는 암모니아의 염,- 아지드화수소(HN3), 및 CH3N3을 포함하는 상기 아지드화수소의 알킬 유도체,- 히드라진(N2H4), 및 히드라진 염화수소를 포함하는 히드라진의 염,- 디메틸 히드라진을 포함하는 히드라진의 알킬 유도체,- 플루오르화질소(NF3),- 히드록실 아민(NH2OH) 및 히드록실아민 염화수소를 포함하는 히드록실 아민의 염,- 메틸 아민, 디에틸아민 및 트리에틸아민을 포함하는 1차, 2차 및 3차 아민, 및- NH2 *, NH**, N*** 및 여기된 상태의 질소(N2 *)를 포함하는 질소 라디칼(여기서 *는 결합 가능한 자유 전자를 의미함)을 포함하는 군으로부터 선택된,금속 질화물 박막의 형성 방법.
- 제 1 항에 있어서,상기 기판은 규소, 실리카, 코팅된 규소, 구리 금속, 및 질화물을 포함하는 군으로부터 선택되는,금속 질화물 박막의 형성 방법.
- 제 1 항에 따른 방법에 의해 집적 회로의 제조 중에 금속 질화물 박막을 상기 집적 회로의 유전체 표면 또는 금속 표면 상에 증착시키는 단계를 포함하는 집적 회로 내에 확산 배리어를 제공하는 방법.
- 제 6 항에 있어서,상기 붕소 화합물은 ALD 공정에 의해 전이 금속 질화물 박막을 형성시키는 환원제로서 이용되는,금속 질화물 박막의 형성 방법.
- 제 5 항에 있어서,상기 WFx는 WF6인,금속 질화물 박막의 형성 방법.
- 제 6 항에 있어서,상기 BnHn+x에서 n은 2에서 6까지의 정수이고, x는 4, 6 또는 8이며,상기 BnHm에서 n은 2에서 6까지의 정수이고, m은 2에서 6까지의 정수인,금속 질화물 박막의 형성 방법.
- 제 8 항에 있어서,상기 C2BnHn+x에서, n은 2에서 6까지의 정수이며, x는 2, 4 또는 6인,금속 질화물 박막의 형성 방법.
- 제 10 항에 있어서,상기 R3NBX3에서, R은 선형 또는 가지형 C1-C4 알킬 또는 H이고, X는 선형 또는 가지형 C1-C4 알킬, H 또는 할로겐인,금속 질화물 박막의 형성 방법.
- 제 11 항에 있어서,상기 R2N에서, R은 선형 또는 가지형 C1-C4 알킬 또는 치환된 또는 치환되지 않은 아릴기인,금속 질화물 박막의 형성 방법.
- 제 12 항에 있어서,상기 알킬은 선형 또는 가지형 C2-C4 알킬인,금속 질화물 박막의 형성 방법.
- 제 17 항에 있어서,상기 할로겐화물염은 플루오르화암모늄 또는 염화암모늄인,금속 질화물 박막의 형성 방법.
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DE60004566T2 (de) | 2004-06-24 |
TW541351B (en) | 2003-07-11 |
FI19992234A (fi) | 2001-04-16 |
AU7926800A (en) | 2001-04-23 |
KR20020040877A (ko) | 2002-05-30 |
JP2003511561A (ja) | 2003-03-25 |
EP1242647B1 (en) | 2003-08-13 |
JP4713041B2 (ja) | 2011-06-29 |
EP1242647A1 (en) | 2002-09-25 |
DE60004566D1 (de) | 2003-09-18 |
US6863727B1 (en) | 2005-03-08 |
FI117944B (fi) | 2007-04-30 |
WO2001027347A1 (en) | 2001-04-19 |
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