KR20010063473A - 반도체 소자의 게이트 전극 형성 방법 - Google Patents
반도체 소자의 게이트 전극 형성 방법 Download PDFInfo
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Abstract
Description
Claims (21)
- 반도체 소자의 게이트 전극 형성 방법에 있어서,반도체 기판 상부에 (TiO2)x(Al2O3)x-1막을 형성하는 단계와,전체 구조 상부에 도전체막을 형성하는 단계와,상기 도전체막 및 (TiO2)x(Al2O3)x-1막을 패터닝하여 게이트 전극을 형성하는 단계를 포함하여 이루어진 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막의 x는 0.05 내지 0.85의 범위를 갖는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막은 TiAlx를 타겟으로 O2및 Ar 분위기에서 리액티브 스퍼터링을 실시하여 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막은 10 내지 250Å의 두께로 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 3 항에 있어서, 상기 리액티브 스퍼터링은 전력 밀도 0.14 내지 7W/㎠의 DC 마그네트론 플라즈마 또는 RF 플라즈마를 이용하여 실시하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 5 항에 있어서, 상기 RF 플라즈마를 이용한 리액티브 스퍼터링은 RF 코일로 Al 또는 Ti을 사용하며 코일과 기판과의 바이어스 조절을 위해 -300∼300W의 전력을 인가하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 3 항에 있어서, 상기 O2는 10 내지 100sccm의 양으로 유입시키고, 상기 Ar은 10 내지 45sccm의 양으로 유입시키는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 3 항에 있어서, 상기 리랙티브 스퍼터링은 -25℃ 내지 750℃의 온도에서 실시하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 3 항에 있어서, 상기 TiAlx 대신에 도프트 TiAlx를 사용하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 3 항에 있어서, 상기 도프트 TiAlx의 도펀트는 0.1 내지 7mole% 농도의 Si, Zr, HF, Y 및 W중 어느 하나를 사용하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막은 TiO2와 Al2O3를 혼합한 타겟을 Ar 분위기에서 DC 마그네트론 또는 RF 전력을 이용하여 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막은 AlCl3또는 DEMA와 TiCl3전구체를 H2, H20 증기와 함께 이용하여 200 내지 850℃의 플라즈마 CVD 방법 또는 LPCVD 방법으로 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막은 TDMAT, TDEAT 또는 Ti(CH3)3의 Ti 전구체와 Al(CH3)3의 Al 전구체를 H2, H2O의 증기와 함께 이용하여 150 내지 750℃의 플라즈마 CVD 방법 또는 LPCVD 방법으로 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막을 형성한 후 열처리 공정을 실시하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 14 항에 있어서, 상기 열처리 공정은 450 내지 850℃ 온도의 산소 분위기에서 30분간 실시하는 퍼니스 어닐링 공정인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 14 항에 있어서, 상기 열처리 공정은 O2또는 N2O 분위기에서 20 내지 80℃/sec의 램프업 조건으로 450 내지 950℃에서 10 내지 120초 동안 실시하는 급속 열처리 공정인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 도전체막은 폴리실리콘, 폴리사이드 및 금속 물질중 어느 하나로 형성되는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 17 항에 있어서, 상기 폴리사이드는 W-폴리사이드, Ti-폴리사이드 및 Mo-폴리사이드 중 어느 하나인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 17 항에 있어서, 상기 금속 물질은 W, Ta, WN 및 TaN중 어느 하나인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 1 항에 있어서, 상기 (TiO2)x(Al2O3)x-1막을 형성하기 전 실리콘 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
- 제 20 항에 있어서, 상기 실리콘 산화막은 2 내지 10Å의 두께로 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성 방법.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990060557A KR100351254B1 (ko) | 1999-12-22 | 1999-12-22 | 반도체 소자의 게이트 전극 형성 방법 |
| US09/721,636 US6514826B1 (en) | 1999-12-22 | 2000-11-27 | Method of forming a gate electrode in a semiconductor device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990060557A KR100351254B1 (ko) | 1999-12-22 | 1999-12-22 | 반도체 소자의 게이트 전극 형성 방법 |
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| Publication Number | Publication Date |
|---|---|
| KR20010063473A true KR20010063473A (ko) | 2001-07-09 |
| KR100351254B1 KR100351254B1 (ko) | 2002-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019990060557A Expired - Fee Related KR100351254B1 (ko) | 1999-12-22 | 1999-12-22 | 반도체 소자의 게이트 전극 형성 방법 |
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| US (1) | US6514826B1 (ko) |
| KR (1) | KR100351254B1 (ko) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6646307B1 (en) * | 2002-02-21 | 2003-11-11 | Advanced Micro Devices, Inc. | MOSFET having a double gate |
| US6818500B2 (en) * | 2002-05-03 | 2004-11-16 | Micron Technology, Inc. | Method of making a memory cell capacitor with Ta2O5 dielectric |
| US20060113603A1 (en) * | 2004-12-01 | 2006-06-01 | Amberwave Systems Corporation | Hybrid semiconductor-on-insulator structures and related methods |
| CN100435350C (zh) * | 2006-01-25 | 2008-11-19 | 南京大学 | 高介电系数栅电介质材料铝酸钛薄膜及其制备方法 |
| US20090065896A1 (en) * | 2007-09-07 | 2009-03-12 | Seoul National University Industry Foundation | CAPACITOR HAVING Ru ELECTRODE AND TiO2 DIELECTRIC LAYER FOR SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME |
| CN101864556A (zh) * | 2010-05-14 | 2010-10-20 | 南京大学 | 一种高介电系数钛铝氧薄膜和制备方法及其应用 |
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| US4397077A (en) | 1981-12-16 | 1983-08-09 | Inmos Corporation | Method of fabricating self-aligned MOS devices and independently formed gate dielectrics and insulating layers |
| JPS62204567A (ja) | 1986-03-04 | 1987-09-09 | Seiko Epson Corp | 多層配線容量結合半導体装置 |
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| US5763922A (en) * | 1997-02-28 | 1998-06-09 | Intel Corporation | CMOS integrated circuit having PMOS and NMOS devices with different gate dielectric layers |
| US5960270A (en) | 1997-08-11 | 1999-09-28 | Motorola, Inc. | Method for forming an MOS transistor having a metallic gate electrode that is formed after the formation of self-aligned source and drain regions |
| US6066525A (en) | 1998-04-07 | 2000-05-23 | Lsi Logic Corporation | Method of forming DRAM capacitor by forming separate dielectric layers in a CMOS process |
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-
1999
- 1999-12-22 KR KR1019990060557A patent/KR100351254B1/ko not_active Expired - Fee Related
-
2000
- 2000-11-27 US US09/721,636 patent/US6514826B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR100351254B1 (ko) | 2002-09-09 |
| US6514826B1 (en) | 2003-02-04 |
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