KR20170097231A - 장기 성막시의 안정성이 우수한 In-Ga-Zn-O계 산화물 소결체 스퍼터링 타겟 - Google Patents
장기 성막시의 안정성이 우수한 In-Ga-Zn-O계 산화물 소결체 스퍼터링 타겟 Download PDFInfo
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Abstract
Description
Claims (13)
- In, Zn, 및 Ga를 포함하고,
표면과 내부의 화합물의 결정형이 실질적으로 동일한 산화물 소결체로 이루어지는 스퍼터링 타겟. - 제 1 항에 있어서,
상기 산화물 소결체의 표면의 비저항(R1)과 표면으로부터 t/2 mm(t는 스퍼터링 타겟의 평균 두께이다.)의 심부의 비저항(R2)의 비 R1/R2가 0.4 이상 2.5 이하인 스퍼터링 타겟. - 제 1 항 또는 제 2 항에 있어서,
상기 산화물 소결체의 In, Zn, 및 Ga의 조성비(원자비)가 하기 영역 1∼6 중 어느 하나를 만족시키는 스퍼터링 타겟.
영역 1
Ga/(In+Ga+Zn) ≤ 0.50
0.58 ≤ In/(In+Zn) ≤ 0.85
In/(In+Ga) ≤ 0.58
영역 2
Ga/(In+Ga+Zn) ≤ 0.50
0.20 ≤ In/(In+Zn) < 0.58
In/(In+Ga) ≤ 0.58
영역 3
0.20 < Ga/(In+Ga+Zn)
0.51 ≤ In/(In+Zn) ≤ 0.85
0.58 < In/(In+Ga)
영역 4
0.00 < Ga/(In+Ga+Zn) < 0.15
0.20 ≤ In/(In+Zn) < 0.51
0.58 < In/(In+Ga)
영역 5
0.00 < Ga/(In+Ga+Zn) ≤ 0.20
0.51 ≤ In/(In+Zn) ≤ 0.85
영역 6
0.15 ≤ Ga/(In+Ga+Zn)
In/(In+Zn) < 0.51
0.58 < In/(In+Ga) - 제 3 항에 있어서,
상기 실질적으로 동일한 결정형이 1종류의 결정형만으로 이루어지는 스퍼터링 타겟. - 제 4 항에 있어서,
상기 1종류의 결정형이, In2Ga2ZnO7로 표시되는 동족(homologous) 결정 구조이며, 또한 상기 영역 1의 조성비를 만족시키는 스퍼터링 타겟. - 제 4 항에 있어서,
상기 1종류의 결정형이, InGaO3(ZnO)로 표시되는 동족 결정 구조이며, 또한 상기 영역 2 또는 영역 3의 조성비를 만족시키는 스퍼터링 타겟. - 제 4 항에 있어서,
상기 1종류의 결정형이, 2θ=7.0°∼8.4°, 30.6°∼32.0°, 33.8°∼35.8°, 53.5°∼56.5° 및 56.5°∼59.5°에 Cukα선의 X선 회절 피크를 갖는 결정 구조이며, 또한 상기 영역 4의 조성비를 만족시키는 스퍼터링 타겟. - 제 3 항에 있어서,
상기 실질적으로 동일한 결정형이, ZnGa2O4로 표시되는 스피넬 결정 구조와, In2O3로 표시되는 빅스바이트 결정 구조를 포함하고, 또한 상기 영역 1 또는 영역 3의 조성비를 만족시키는 스퍼터링 타겟. - 제 3 항에 있어서,
상기 실질적으로 동일한 결정형이, 2θ=7.0°∼8.4°, 30.6°∼32.0°, 33.8°∼35.8°, 53.5°∼56.5° 및 56.5°∼59.5°에 Cukα선의 X선 회절 피크를 갖는 결정 구조와, In2O3로 표시되는 빅스바이트 결정 구조를 포함하고, 또한 상기 영역 5의 조성비를 만족시키는 스퍼터링 타겟. - 제 3 항에 있어서,
상기 실질적으로 동일한 결정형이, 2θ=7.0°∼8.4°, 30.6°∼32.0°, 33.8°∼35.8°, 53.5°∼56.5° 및 56.5°∼59.5°에 Cukα선의 X선 회절 피크를 갖는 결정 구조와, InGaO3(ZnO)로 표시되는 동족 결정 구조를 포함하고, 또한 상기 영역 6의 조성비를 만족시키는 스퍼터링 타겟. - 하기 (a)∼(e)의 공정을 포함하는 제 4 항, 제 5 항, 제 6 항 및 제 8 항 중 어느 한 항에 기재된 스퍼터링 타겟의 제조방법.
(a) 원료 화합물 분말을 혼합하여 혼합물을 조제하는 공정,
(b) 상기 혼합물을 성형하여 두께 6.0mm 이상의 성형체를 조제하는 공정,
(c) 분위기를 승온 속도 3℃/분 이하로 승온시키는 공정,
(d) 상기 승온시킨 성형체를 추가로 1280℃ 이상 1520℃ 이하에서 2시간 이상 96시간 이하 소결하여 두께 5.5mm 이상의 소결체를 얻는 공정,
(e) 상기 소결체의 표면을 0.25mm 이상 연삭하는 공정 - 하기 (a)∼(e)의 공정을 포함하는 제 5 항에 기재된 스퍼터링 타겟의 제조방법.
(a) 원료 화합물 분말을 혼합하여 혼합물을 조제하는 공정,
(b) 상기 혼합물을 성형하여 두께 6.0mm 이상의 성형체를 조제하는 공정,
(c) 분위기를 승온 속도 3℃/분 이하로 승온시키는 공정,
(d) 상기 승온시킨 성형체를 추가로 1350℃ 초과 1540℃ 이하에서 2시간 이상 36시간 이하 소결하여 두께 5.5mm 이상의 소결체를 얻는 공정,
(e) 상기 소결체의 표면을 0.25mm 이상 연삭하는 공정 - 하기 (f)∼(i)의 공정을 포함하는 제 8 항의 스퍼터링 타겟의 제조방법.
(f) 원료 화합물 분말을 혼합하여 혼합물을 조제하는 공정,
(g) 상기 혼합물을 성형하여 성형체를 조제하는 공정,
(h) 분위기를 승온 속도 10℃/분 이하로 승온시키는 공정,
(i) 상기 승온시킨 성형체를 추가로 1100℃ 이상 1350℃ 이하에서 4시간 이상 96시간 이하 소결하는 공정
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| JPJP-P-2009-264086 | 2009-11-19 | ||
| PCT/JP2010/006761 WO2011061938A1 (ja) | 2009-11-19 | 2010-11-18 | 長期成膜時の安定性に優れたIn-Ga-Zn-O系酸化物焼結体スパッタリングターゲット |
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| KR1020177022621A Active KR102027127B1 (ko) | 2009-11-19 | 2010-11-18 | 장기 성막시의 안정성이 우수한 In-Ga-Zn-O계 산화물 소결체 스퍼터링 타겟 |
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| US10892366B2 (en) | 2018-06-25 | 2021-01-12 | Samsung Electronics Co., Ltd. | Thin film transistor and vertical non-volatile memory device including transition metal-induced polycrystalline metal oxide channel layer |
| US11942553B2 (en) | 2018-06-25 | 2024-03-26 | Samsung Electronics Co., Ltd. | Method for fabricating a semiconductor device |
| US12211940B2 (en) | 2018-06-25 | 2025-01-28 | Samsung Electronics Co., Ltd. | Thin film transistor and vertical non-volatile memory device including transition metal-induced polycrystalline metal oxide channel layer |
| WO2020027532A1 (ko) * | 2018-07-30 | 2020-02-06 | 한양대학교 산학협력단 | 전이금속에 의해 결정화 유도된 다결정질 금속 산화물 채널층 및 알루미늄 산화막을 구비하는 박막트랜지스터 및 수직형 비휘발성 메모리 소자 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2503019A4 (en) | 2014-06-04 |
| EP2503019A1 (en) | 2012-09-26 |
| US20120228133A1 (en) | 2012-09-13 |
| CN102597302B (zh) | 2015-02-25 |
| WO2011061938A1 (ja) | 2011-05-26 |
| CN102597302A (zh) | 2012-07-18 |
| KR20120084767A (ko) | 2012-07-30 |
| JP2011106003A (ja) | 2011-06-02 |
| JP5591523B2 (ja) | 2014-09-17 |
| KR102027127B1 (ko) | 2019-10-01 |
| TWI498436B (zh) | 2015-09-01 |
| TW201124551A (en) | 2011-07-16 |
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