KR102232285B1 - 결정성 반도체막 및 판상체 및 반도체장치 - Google Patents
결정성 반도체막 및 판상체 및 반도체장치 Download PDFInfo
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- KR102232285B1 KR102232285B1 KR1020207017449A KR20207017449A KR102232285B1 KR 102232285 B1 KR102232285 B1 KR 102232285B1 KR 1020207017449 A KR1020207017449 A KR 1020207017449A KR 20207017449 A KR20207017449 A KR 20207017449A KR 102232285 B1 KR102232285 B1 KR 102232285B1
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Abstract
Description
도 2는 본 발명의 쇼트키 배리어 다이오드(SBD)의 호적한 일례를 모식적으로 나타내는 도이다.
도 3은 본 발명의 쇼트키 배리어 다이오드(SBD)의 호적한 일례를 모식적으로 나타내는 도이다.
도 4는 본 발명의 금속반도체 전계효과 트랜지스터(MESFET)의 호적한 일례를 모식적으로 나타내는 도이다.
도 5는 본 발명의 고전자이동도 트랜지스터(HEMT)의 호적한 일례를 모식적으로 나타내는 도이다.
도 6은 본 발명의 금속산화막 반도체 전계효과 트랜지스터(MOSFET)의 호적한 일례를 모식적으로 나타내는 도이다.
도 7은 도 6의 금속산화막 반도체 전계효과 트랜지스터(MOSFET)의 제조 공정의 일부를 설명하기 위한 모식도이다.
도 8은 본 발명의 금속산화막 반도체 전계효과 트랜지스터(MOSFET)의 일례를 모식적으로 나타내는 도이다.
도 9는 본 발명의 정전 유도 트랜지스터(SIT)의 호적한 일례를 모식적으로 나타내는 도이다.
도 10은 본 발명의 쇼트키 배리어 다이오드(SBD)의 호적한 일례를 모식적으로 나타내는 도이다.
도 11은 본 발명의 쇼트키 배리어 다이오드(SBD)의 호적한 일례를 모식적으로 나타내는 도이다.
도 12는 본 발명의 고전자이동도 트랜지스터(HEMT)의 호적한 일례를 모식적으로 나타내는 도이다.
도 13은 본 발명의 금속산화막 반도체 전계효과 트랜지스터(MOSFET)의 호적한 일례를 모식적으로 나타내는 도이다.
도 14는 본 발명의 접합 전계효과 트랜지스터(JFET)의 호적한 일례를 모식적으로 나타내는 도이다.
도 15는 본 발명의 절연 게이트형 바이폴라트랜지스터(IGBT)의 호적한 일례를 모식적으로 나타내는 도이다.
도 16은 본 발명의 발광 소자(LED)의 호적한 일례를 모식적으로 나타내는 도이다.
도 17은 본 발명의 발광 소자(LED)의 호적한 일례를 모식적으로 나타내는 도이다.
도 18은 실시예에서 이용한 미스트 CVD장치의 구성도이다.
도 19는 실시예에서 이용한 서셉터를 설명하는 도이다.
도 20은 실시예에서 이용한 서셉터와 공급관과의 단면적의 관계를 나타내는 도이다.
도 21은 본 발명의 실시예에서의 액중 도펀트 함유율과, 막중 게르마늄 함유량의 관계를 나타내는 그래프다.
도 22는 실시예에서의 쇼트키 배리어 다이오드(SBD)의 구조를 설명하는 도이다.
도 23은 실시예에서 게르마늄을 도핑한 반도체층의 SIMS분석의 결과를 나타내는 도이다.
도 24는 실시예에서 규소를 도핑한 반도체층의 SIMS분석의 결과를 나타내는 도이다.
도 25는 실시예에서 얻어진 자립막의 X선 회절상(回折像)을 나타내는 도이다.
도 26은 실시예에서의 쇼트키 배리어 다이오드(SBD)의 구조를 설명하는 도이다.
도 27은 실시예에서 얻어진 SBD의 전류전압특성을 나타내는 도이다.
도 28은 실시예에서 제작된 MESFET의 구조를 나타내는 도이다.
도 29는 실시예에서 제작된 MESFET의 DC특성을 나타내는 도이다. 한편, 종축은 드레인 전류(A)를 나타내고 횡축은 드레인 전압(V)을 나타낸다.
도 30은 실시예에서 이용한 미스트 CVD장치의 개략구성도이다.
도 31은 실시예에서의 순방향의 전류전압특성의 평가 결과를 나타내는 도이다.
도 32는 실시예에서의 역방향의 전류전압특성의 평가 결과를 나타내는 도이다.
도 33은 실시예에서의 XRD의 결과를 나타내는 도이다.
도 34는 실시예에서의 막의 사진을 나타내는 도이다.
도 35는 실시예에서의 막의 사진을 나타내는 도이다.
2a 캐리어 가스원
2b 캐리어 가스(희석)원
3a 유량 조절 밸브
3b 유량 조절 밸브
4 미스트 발생원
4a 원료 용액
4b 미스트
5 용기
5a 물
6 초음파 진동자
7 성막실
8 핫 플레이트(hot plate)
9 공급관
10 기판
11 배기구
19 미스트 CVD장치
20 기판
21 서셉터
22 캐리어 가스 공급 수단
23 유량 조절 밸브
24 미스트 발생원
24a 원료 용액
25 용기
25a 물
26 초음파 진동자
27 성막실
28 히터
51 서셉터
52 미스트 가속 수단
53 기판유지부
54 지지부
55 공급관
61 기판·서셉터 영역
62 배출 영역
101a n-형 반도체층
10lb n+형 반도체층
102 p형 반도체층
103 반절연체층
104 절연체층
105a 쇼트키 전극
105b 오믹 전극
109 기판
111a n-형 반도체층
11lb n+형 반도체층
114 반절연체층
115a 게이트 전극
115b 소스 전극
115c 드레인 전극
118 완충층
121a 밴드갭이 넓은 n형 반도체층
12lb 밴드갭이 좁은 n형 반도체층
121c n+형 반도체층
123 p형 반도체층
124 반절연체층
125a 게이트 전극
125b 소스 전극
125c 드레인 전극
128 완충층
129 기판
131a n-형 반도체층
13lb 제1의 n+형 반도체층
131c 제2의 n+형 반도체층
132 p형 반도체층
134 게이트 절연막
135a 게이트 전극
135b 소스 전극
135c 드레인 전극
138 완충층
139 반절연체층
141a n-형 반도체층
14lb 제1의 n+형 반도체층
141c 제2의 n+형 반도체층
142 p형 반도체층
145a 게이트 전극
145b 소스 전극
145c 드레인 전극
151 n형 반도체층
151a n-형 반도체층
15lb n+형 반도체층
152 p형 반도체층
154 게이트 절연막
155a 게이트 전극
155b 이미터 전극
155c 콜렉터 전극
161 n형 반도체층
162 p형 반도체층
163 발광층
165a 제1의 전극
165b 제2의 전극
167 투광성 전극
169 기판
171 α-Ga2O3층
175a 텅스텐 전극
175b 인듐 전극
181 n형 반도체층
185a 게이트 전극
185b 소스 전극
185c 드레인 전극
189 기판
Claims (11)
- 코랜덤 구조를 가지는 산화물반도체가 결정성 반도체막의 전체 성분에 대하여 원자비로 50% 이상 포함되어 있는, 상기 결정성 반도체막으로 이루어지는 반도체층과 전극을 적어도 구비하는 반도체장치로서, 상기 결정성 반도체막의 막두께가 1μm 이상이고, 또한, 상기 반도체층이, 트렌치 홈으로 이루어지는 트렌치 구조를 갖는 것을 특징으로 하는, 반도체장치.
- 제 1 항에 있어서,
상기 트렌치 구조가, 복수의 트렌치 홈으로 이루어지는, 반도체장치. - 제 1 항에 있어서,
상기 전극이, 상기 트렌치 홈 내에 형성되어 있는, 반도체장치. - 제 1 항에 있어서,
상기 전극이, 절연막을 통하여 상기 트렌치 홈 내에 형성되어 있는, 반도체장치. - 제 1 항에 있어서,
상기 산화물반도체가, 갈륨, 인듐 및 알루미늄으로부터 선택되는 1종 또는 2종 이상의 산화물을, 상기 산화물반도체의 전체 성분에 대하여 원자비로 50% 이상 포함하는, 반도체장치. - 제 1 항에 있어서,
상기 산화물반도체가, 적어도 갈륨을 포함하는, 반도체장치. - 제 1 항에 있어서,
상기 결정성 반도체막이, n-형 반도체층 및 n+형 반도체층을 포함하는 다층막인, 반도체장치. - 제 1 항에 있어서,
종형 장치인, 반도체장치. - 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,
다이오드인, 반도체장치. - 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,
트랜지스터인, 반도체장치. - 제 1 항에 있어서,
파워 디바이스인, 반도체장치.
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