KR101646488B1 - 산화물 소결물체와 그 제조 방법, 타겟, 및 그것을 이용해 얻어지는 투명 도전막 및 투명 도전성 기재 - Google Patents
산화물 소결물체와 그 제조 방법, 타겟, 및 그것을 이용해 얻어지는 투명 도전막 및 투명 도전성 기재 Download PDFInfo
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- KR101646488B1 KR101646488B1 KR1020157005160A KR20157005160A KR101646488B1 KR 101646488 B1 KR101646488 B1 KR 101646488B1 KR 1020157005160 A KR1020157005160 A KR 1020157005160A KR 20157005160 A KR20157005160 A KR 20157005160A KR 101646488 B1 KR101646488 B1 KR 101646488B1
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Abstract
따라서, 본 발명은 인듐과 갈륨을 산화물로서 함유하고 있고, 빅스바이트형 구조의 In2O3상이 주요 결정상을 형성하며, β-Ga2O3형 구조의 GaInO3상, 또는 GaInO3상과 (Ga, In)2O3상이 평균 입경 5 ㎛ 이하의 결정립으로 In2O3상에 미세하게 분산되어 있고, 갈륨의 함량이 Ga/(In+Ga)의 원자수비로 10 원자% 이상 내지 35 원자% 미만인 것을 특징으로 하는 산화물 소결물체를 제공한다.
Description
도 2는 본 발명의 산화물 소결물체를 X선 회절한 결과를 나타내는 차트이다.
도 3은 산화물 소결물체를 가공한 타겟으로 스퍼터링 했을 때의 투입 직류 전력과 아킹 발생 회수의 관계를 나타내는 그래프이다.
Claims (19)
- 삭제
- 삭제
- 인듐과 갈륨을 산화물로서 함유하는 산화물 소결물체로서, 빅스바이트형 구조의 In2O3상이 주요 결정상을 형성하고, β-Ga2O3형 구조의 GaInO3상, 또는 GaInO3상과 (Ga, In)2O3상이 평균 입경 5 ㎛ 이하의 결정립으로 In2O3상에 미세하게 분산되어 있으며, 인듐과 갈륨 이외에, 주석 또는 게르마늄으로부터 선택되는 1종 이상의 첨가 성분을 더 함유하고 있고, 갈륨의 함량이 Ga/(In+Ga+Sn+Ge)의 원자수비로 2 내지 30 원자%이며, 첨가 성분의 함량이 (Sn+Ge)/(In+Ga+Sn+Ge)의 원자수비로 1 내지 11 원자%이고, 밀도가 6.3 g/cm3 이상이며, 하기 식으로 정의되는 X선 회절 피크 강도비가 4% 내지 84%인 것을 특징으로 하는 산화물 소결물체:
I[GaInO3상(-111)]/{I[In2O3상(400)]+I[GaInO3상(-111)]}×100 [%]
(상기 식에서, I[In2O3상(400)]은 빅스바이트형 구조를 가진 In2O3상의 (400) 피크 강도를, I[GaInO3상(-111)]은 β-Ga2O3형 구조를 가진 복합 산화물 β-GaInO3상의 (-111) 피크 강도를 각각 나타낸다). - 제 3 항에 있어서, 갈륨의 함량이 Ga/(In+Ga+Sn+Ge)의 원자수비로 2 내지 20 원자%이고, 주석 또는 게르마늄으로부터 선택되는 1종 이상의 함량이 (Sn+Ge)/(In+Ga+Sn+Ge)의 원자수비로 2 내지 10 원자%인 것을 특징으로 하는 산화물 소결물체.
- 제 3 항에 있어서, 일반식 Ga3-xIn5+xSn2O16(0.3<x<1.5)으로 표현되는 정방정의 복합 산화물을 더 포함하는 것을 특징으로 하는 산화물 소결물체.
- 제 3 항 내지 제 5 항 중 어느 하나에 따른 산화물 소결물체의 제조 방법으로서, 산화 인듐 분말과 산화 갈륨 분말을 포함하는 원료 분말에 산화 주석 분말 및/또는 산화 게르마늄 분말을 첨가하여 혼합한 후, 혼합 분말을 성형하고, 성형물을 상압 소성법(normal pressure firing method)에 의해 소결하거나, 또는 혼합 분말을 핫 프레스법에 의해 성형하여 소결함으로써 산화물 소결물체를 제조하며, 원료 분말의 평균 입경을 1 ㎛ 이하로 조절하는 것에 의해, 빅스바이트형 구조의 In2O3상이 주요 결정상을 형성하고, GaInO3상, 또는 GaInO3상과 (Ga, In)2O3상이 평균 입경 5 ㎛ 이하의 결정립으로 In2O3상에 미세하게 분산되어 있고, 상기 상압 소성법을 적용할 때, 성형체를 산소 존재하의 분위기에서 1250 내지 1450℃로 10 내지 30 시간 동안 소결하거나, 또는 상기 핫 프레스법을 적용할 때, 혼합 분말을 불활성 가스 분위기 또는 진공 중에서, 9.80 내지 29.40 MPa의 압력에서 800 내지 900℃로 1 내지 3 시간 동안 성형하여 소결하는 것을 특징으로 하는 산화물 소결물체의 제조 방법.
- 제 3 항 내지 제 5 항 중 어느 하나에 따른 산화물 소결물체를 가공해 얻어지는 타겟.
- 제 7 항에 따른 타겟을 이용하여 스퍼터링법으로 기판상에 형성해 얻어진 비정질의 투명 도전막.
- 제 8 항에 있어서, 막중의 갈륨의 함량이 Ga/(In+Ga)의 원자수비로 10 원자% 이상 내지 35 원자% 미만인 것을 특징으로 하는 투명 도전막.
- 제 8 항에 있어서, 막중의 갈륨의 함량이 Ga/(In+Ga+Sn+Ge)의 원자수비로 2 내지 30 원자%이며, 주석 또는 게르마늄으로부터 선택되는 1종 이상의 함량이 (Sn+Ge)/(In+Ga+Sn+Ge)의 원자수비로 1 내지 11 원자%인 것을 특징으로 하는 투명 도전막.
- 제 8 항에 있어서, 스퍼터링이 직류 전력 밀도 1.10 내지 3.29 W/cm2를 투입해도 아킹(arching)이 발생하지 않는 조건으로 행해지는 것을 특징으로 하는 투명 도전막.
- 제 8 항에 있어서, 산술 평균 높이 Ra가 1.0 nm 이하인 것을 특징으로 하는 투명 도전막.
- 제 8 항에 있어서, 파장 400 nm에서의 소쇠계수(extinction coefficient)가 0.04 이하인 것을 특징으로 하는 투명 도전막.
- 제 8 항에 있어서, 비저항이 2×10-3 Ω·cm 이하인 것을 특징으로 하는 투명 도전막.
- 제 8 항에 따른 투명 도전막이 투명 기판의 일면 또는 양면에 형성되어 있는 투명 도전성 기재.
- 제 15 항에 있어서, 투명 기판이 유리판, 석영판, 수지판 또는 수지 필름인 것을 특징으로 하는 투명 도전성 기재.
- 제 16 항에 있어서, 수지판 또는 수지 필름이 폴리에틸렌 테레프탈레이트, 폴리에테르술폰, 폴리아릴레이트, 또는 폴리카보네이트를 재료로 하는 단일체, 또는 그것의 표면을 아크릴계 유기물로 도포한 적층 구조체 중 어느 하나인 것을 특징으로 하는 투명 도전성 기재.
- 제 16 항에 있어서, 수지판 또는 수지 필름이, 그것의 일면 또는 양면이 가스 차단막으로 덮여 있거나, 또는 중간에 가스 차단막이 삽입된 적층체인 것을 특징으로 하는 투명 도전성 기재.
- 제 18 항에 있어서, 상기 가스 차단막이 산화 실리콘막, 산화 질화 실리콘막, 알루미늄산마그네슘(magnesium aluminate)막, 산화 주석계막 또는 다이아몬드상(diamond-like) 카본막으로부터 선택되는 1종 이상인 것을 특징으로 하는 투명 도전성 기재.
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