KR102287813B1 - 하드마스크 조성물 및 이를 이용한 패턴의 형성방법 - Google Patents
하드마스크 조성물 및 이를 이용한 패턴의 형성방법 Download PDFInfo
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Abstract
Description
도 2a 내지 도 2d는 다른 일구현예에 따른 하드마스크 조성물을 이용한 패턴의 형성방법을 설명하기 위한 것이다.
도 3은 실시예 1-3에 따른 이차원 탄소나노구조물 및 비교예 1의 비정질 탄소에 대한 X-선 회절 분석 결과를 나타낸 것이다.
도 4는 실시예 1-3에서 얻어진 이차원 탄소나노구조물, 비교예 1에 따라 제조된 고온-비정질 탄소 및 비교예 2에 따라 제조된 저온-비정질 탄소에 대한 라만 분광 분석 결과를 나타낸 것이다.
구분 | 층간 간격(nm) | 결정의 평균입경 La(Å) |
실시예 1 | 0.356 | 28.0 |
실시예 2 | 0.343 | 25.1 |
실시예 3 | 0.334 | 24.5 |
구분 | ID/IG | I2D/IG |
실시예 1 | 0.87 | 0.01 |
실시예 2 | 0.86 | 0.02 |
실시예 3 | 0.90 | 0.1 |
비교예 1 | 0.85 | - |
구분 | XPS | ||
C/O원자비 |
산소의 함량 (원자%) |
C=C/C-Ca | |
실시예 1 | 4.34 | 10.33 | 1.98 |
실시예 2 | 6.00 | 14.28 | 2.29 |
실시예 3 | 4.0 | 19.9 | 2.1 |
실시예 4 | 14.0 | 6.5 | 4.2 |
비교예 1 | 15.78 | 5.96 | 3.25 |
구분 | 에칭 선택비 |
실시예 2 | 12.2 |
실시예 3 | 16.0 |
실시예 7 | 14.0 |
실시예 8 | 12.7 |
비교예 1 | 10.0 |
비교예 2 | 7.0 |
비교예 3 | 5.35 |
구분 | 하드마스크 에칭후 패턴 모양 | 실리콘 산화물 에칭후 패턴 모양 |
실시예 1 | 수직 | 수직 |
실시예 2 | 수직 | 수직 |
실시예 3 | 수직 | 수직 |
실시예 4 | 수직 | 수직 |
실시예 5 | 수직 | 수직 |
실시예 6 | 수직 | 수직 |
실시예 7 | 수직 | 수직 |
실시예 8 | 수직 | 수직 |
비교예 1 | 활 | 테이퍼진 모양 |
비교예 2 | 활 | 테이퍼진 모양 |
비교예 3 | 활 | 테이퍼진 모양 |
2a, 22a: 하드마스크 패턴 13a: 포토레지스트 패턴
Claims (23)
- 0.01 내지 40원자%의 산소를 함유하는 이차원 탄소나노구조물 또는 상기 이차원 탄소나노구조물의 전구체 및 용매를 포함하며,
상기 이차원 탄소나노구조물의 전구체는 산소의 함량이 0.01 원자% 미만이거나 또는 산소 프리(oxygen free) 이차원 탄소나노구조물이며,
상기 이차원 탄소나노구조물의 전구체가 i)박리된 그래파이트(exfoliated graphite)로부터 얻은 팽창 그래파이트, 또는 ii)산처리된 그래파이트를 산화하여 얻은 생성물인 하드마스크 조성물. - 삭제
- 삭제
- 제1항에 있어서,
상기 이차원 탄소 나노구조물의 라만 분광 분석에 의하여 구해지는 G 모드 피크에 대한 D 모드 피크의 세기비가 2 이하인 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소 나노구조물의 라만 분광에 의하여 구해지는 G 모드 피크에 대한 2D 모드 피크의 세기비가 0.01 이상인 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소 나노구조물 전구체의 라만 분광에 의하여 구해지는 G 모드 피크에 대한 D 모드 피크의 세기비가 2 이하인 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소 나노구조물 전구체의 라만 분광에 의하여 구해지는 G 모드 피크에 대한 2D 모드 피크의 세기비가 0.01 이상인 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소나노구조물의 X선 회절 분석에 의하여 구해지는 002면 피크가 20 내지 27°에서 나타나는 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소나노구조물은 X선 회절 분석에 의하여 구해지는 층간간격(d-spacing)이 0.3 내지 0.5인 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소나노구조물은 C-축으로 결정성을 갖고 있고 결정의 평균입경이 1nm 이상인 하드마스크 조성물, - 제1항에 있어서,
상기 용매가 물, 메탄올, 이소프로판올, 에탄올 N,N-디메틸포름아미드, N-메틸피롤리돈, 디클로로에탄, 디클로로벤젠, N,N-디메틸술폭사이드, 크실렌, 아닐린, 프로필렌 글리콜, 프로필렌 글리콜 디아세테이트, 메톡시 프로판디올, 디에틸렌글리콜, 감마부티로락톤, 아세틸아세톤, 사이클로헥사논, 프로필렌글리콜 모노메틸에테르 아세테이트, γ-부티로락톤, 디클로로에탄, O-디클로로벤젠, 니트로메탄, 테트라하이드로퓨란, 니트로메탄, 디메틸 술폭시드, 니트로벤젠, 부틸 니트라이트(butyl nitrite), 메틸셀로솔브, 에틸셀로솔브, 디에틸 에테르, 디에틸렌글리콜메틸에테르, 디에틸렌글리콜에틸에테르, 디프로필렌글리콜메틸에테르, 톨루엔, 자이렌, 헥산, 메틸에틸케톤, 메틸이소케톤, 하이드록시메틸셀룰로오즈 및 헵탄 중에서 선택된 하나 이상으로 이루어진 군으로부터 선택된 하나 이상인 하드마스크 조성물. - 제1항에 있어서,
상기 이차원 탄소 나노구조물의 sp2 탄소 분율이 sp3 탄소 분율에 비하여 1배 이상인 하드마스크 조성물. - 기판상에 피식각막을 형성하는 단계;
상기 피식각막 상부에 제1항, 제4항 내지 제12항 중 어느 한 항의 하드마스크 조성물을 공급하여 이차원 탄소나노구조물을 함유하는 하드마스크를 형성하는 제1단계;
상기 하드마스크 상부에 포토레지스트막을 형성하는 제2단계;
상기 포토레지스트막을 에칭 마스크로 하여 이차원 탄소나노구조물을 에칭하여 상기 피식각막 상부에 0.01 내지 40 원자%의 산소를 함유하는 이차원 탄소나노구조물을 포함하는 하드마스크 패턴을 형성하는 제3단계; 및
상기 하드마스크 패턴을 에칭 마스크로 하여 상기 피식각막을 에칭하는 제4단계를 포함하는 패턴의 형성방법. - 제13항에 있어서,
상기 하드마스크 조성물이 0.01 내지 40원자%의 산소를 함유하는 이차원 탄소 나노구조물을 포함하는 경우,
상기 제1단계가 하드마스크 조성물을 피식각막 상부에 코팅하여 실시되는 패턴의 형성방법. - 제14항에 있어서,
상기 하드마스크 조성물을 피식각막 상부에 코팅하는 과정 중 또는 코팅 후에 열처리를 실시하는 패턴의 형성방법. - 제13항에 있어서,
상기 하드마스크 조성물이 이차원 탄소나노구조물 전구체를 포함하는 경우,
상기 제1단계가 i)하드마스크 조성물을 피식각막 상부에 코팅한 후 코팅된 결과물을 산화 또는 환원하여 실시되는 단계;
ii) 하드마스크 조성물을 산화 또는 환원한 후 이를 피식각막 상부에 코팅하는 단계; 또는
iii) 하드마스크 조성물을 피식각막 상부에 코팅하면서 산화 또는 환원이 동시에 진행되는 단계인패턴의 형성방법. - 제16항에 있어서,
상기 환원하는 단계가 화학적 환원, 열처리에 의한 환원 또는 전기화학적 환원에 의하여 이루어지는 패턴의 형성방법. - 제17항에 있어서,
상기 화학적 환원이 암모니아-보란, 히드라진, 소듐보로하이드레이트, 디메틸히드라진, 황산, 염산, 요오드화수소, 브롬화수소, 황화수소, 히드로퀴논, 수소 및 아세트산으로 이루어진 군으로부터 선택된 하나 이상의 환원제를 이용하여 실시되는 패턴의 형성방법. - 제17항에 있어서,
상기 열처리에 의한 환원이 100 내지 1500℃의 열처리에 의하여 실시되는 패턴의 형성방법. - 제16항에 있어서,
상기 산화하는 단계가 산(acid), 산화제, UV, 오존, IR, 열처리, 플라즈마 중에서 선택된 하나 이상을 이용하여 실시되는 패턴의 형성방법. - 제13항에 있어서,
상기 하드마스크 패턴의 이차원 탄소나노구조물은 이차원 나노결정질 탄소가 적층되어 이루어진 구조체인 패턴의 형성방법. - 제13항에 있어서,
상기 하드마스크의 두께가 10nm 내지 10,000nm인 패턴의 형성방법. - 제13항에 있어서,
상기 제1단계가 하드마스크 조성물을 스핀 코팅(Spin coating), 에어스프레이, 전기분무(electrospary), 딥 코팅(dip coating), 스프레이 코팅(spary coating), 닥터블래이드법, 바코팅(bar coating) 중에서 선택된 하나에 따라 실시되는 패턴의 형성방법.
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