KR20170091760A - 반도체 장치 - Google Patents
반도체 장치 Download PDFInfo
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- KR20170091760A KR20170091760A KR1020177021208A KR20177021208A KR20170091760A KR 20170091760 A KR20170091760 A KR 20170091760A KR 1020177021208 A KR1020177021208 A KR 1020177021208A KR 20177021208 A KR20177021208 A KR 20177021208A KR 20170091760 A KR20170091760 A KR 20170091760A
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- oxide semiconductor
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
-
- H01L29/7869—
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- H01L29/06—
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- H01L29/42384—
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- H01L29/66742—
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- H01L29/78693—
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- H01L29/78696—
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/031—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/6737—Thin-film transistors [TFT] characterised by the electrodes characterised by the electrode materials
- H10D30/6739—Conductor-insulator-semiconductor electrodes
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
- H10D30/6756—Amorphous oxide semiconductors
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- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6757—Thin-film transistors [TFT] characterised by the structure of the channel, e.g. transverse or longitudinal shape or doping profile
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
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Abstract
Description
도 2a 내지 도 2e는 본 발명의 실시 형태에 따른 트랜지스터의 제조 공정을 도시한 단면도.
도 3은 산화물 반도체를 포함하는 절연 게이트 트랜지스터의 VG-ID 특성을 도시한 도면.
도 4a 및 도 4b는 산화물 반도체를 포함하는 절연 게이트 트랜지스터의 사진.
도 5a 및 도 5b는 산화물 반도체를 포함하는 절연 게이트 트랜지스터의 VG-ID 특성(온도 특성)을 도시한 도면.
도 6은 산화물 반도체를 포함하는 역 스태거형의 절연 게이트 트랜지스터의 종단면도.
도 7a 및 도 7b는 도 6의 선 A-A'를 따라 절취한 단면에 대응하는 에너지 밴드도(모식도).
도 8a 및 도 8b는 도 6의 선 B-B'를 따라 절취한 단면에 대응하는 에너지 밴드도(모식도)로서, 도 8a는 양의 전위(VG>0)가 게이트(G1)에 공급된 상태를 도시하고 도 8b는 음의 전위(VG<0)가 게이트(G1)에 공급된 상태를 도시한다.
도 9는 진공 레벨, 금속의 일 함수(φM), 및 산화물 반도체의 전자 친화력(χ) 간의 관계를 도시한 도면.
도 10은 과학적 계산에 이용된 절연 게이트 트랜지스터의 구성 모델.
도 11a 내지 도 11d는 과학적 계산에 의해 임계 전압을 계산하여 얻어진 결과를 도시한 도면.
도 12a 및 도 12b는 전자 장치를 도시한 도면.
도 13a 및 도 13b는 전자 장치를 도시한 도면.
도 14a 및 도 14b는 전자 장치를 도시한 도면.
도 15는 본 발명의 실시 형태에 따른 트랜지스터를 도시한 단면도.
도 16은 본 발명의 실시 형태에 따른 트랜지스터의 VG-ID 특성을 도시한 도면.
도 17은 본 발명의 실시 형태에 따른 트랜지스터의 임계 전압 및 과학적 계산 결과가 비교되는 그래프.
Claims (14)
- 반도체 장치로서,
게이트 전극층;
상기 게이트 전극층에 인접한 게이트 절연층; 및
상기 게이트 절연층을 사이에 두고 상기 게이트 전극층에 인접한 산화물 반도체층을 포함하고,
상기 산화물 반도체층은 인듐, 갈륨, 및 아연을 포함하고,
상기 산화물 반도체층은 결정을 포함하고,
상기 산화물 반도체층의 두께는 15nm 내지 30nm이고,
1V 내지 10V의 드레인 전압이 인가될 때, 채널 폭의 마이크로미터 당 오프 전류는 100aA/㎛ 이하이고,
상기 게이트 절연층의 두께는 20nm 내지 50nm인, 반도체 장치. - 반도체 장치로서,
게이트 전극층;
상기 게이트 전극층에 인접한 게이트 절연층; 및
상기 게이트 절연층을 사이에 두고 상기 게이트 전극층에 인접한 산화물 반도체층을 포함하고,
상기 산화물 반도체층은 인듐, 갈륨, 및 아연을 포함하고,
상기 산화물 반도체층은 결정을 포함하고,
상기 산화물 반도체층의 두께는 15nm 내지 100nm이고,
1V 내지 10V의 드레인 전압이 인가될 때, 채널 폭의 마이크로미터 당 오프 전류는 100aA/㎛ 이하이고,
상기 게이트 절연층의 두께는 10nm 내지 20nm인, 반도체 장치. - 제1항 또는 제2항에 있어서,
소스 전극층 및 드레인 전극층을 더 포함하고,
상기 소스 전극층 및 상기 드레인 전극층 각각은 상기 산화물 반도체층과 전기적으로 접속되는, 반도체 장치. - 반도체 장치로서,
산화물 반도체층;
상기 산화물 반도체층 위의 소스 전극층 및 드레인 전극층;
상기 산화물 반도체층, 상기 소스 전극층, 및 상기 드레인 전극층 위의 게이트 절연층; 및
상기 게이트 절연층 위의 게이트 전극층을 포함하고,
상기 게이트 전극층은 상기 산화물 반도체층, 상기 소스 전극층, 및 상기 드레인 전극층과 중첩하고,
상기 산화물 반도체층은 인듐, 갈륨, 및 아연을 포함하고,
상기 산화물 반도체층은 결정을 포함하고,
상기 산화물 반도체층의 두께는 15nm 내지 30nm이고,
1V 내지 10V의 드레인 전압이 인가될 때, 채널 폭의 마이크로미터 당 오프 전류는 100aA/㎛ 이하이고,
상기 게이트 절연층의 두께는 20nm 내지 50nm인, 반도체 장치. - 제4항에 있어서,
절연층을 더 포함하고,
상기 산화물 반도체층은 상기 절연층 위에 있는, 반도체 장치. - 제5항에 있어서,
도전층을 더 포함하고,
상기 절연층은 상기 도전층 위에 있는, 반도체 장치. - 제1항, 제2항, 및 제4항 중 어느 한 항에 있어서,
상기 산화물 반도체층의 캐리어 농도는 1×1012/cm3 미만인, 반도체 장치. - 제1항, 제2항, 및 제4항 중 어느 한 항에 있어서,
상기 게이트 전극층은 알루미늄, 구리, 몰리브덴, 티타늄, 크롬, 탄탈, 텅스텐, 네오디뮴, 및 스칸듐으로부터 선택된 금속 원소를 포함하는 막; 합금막; 또는 이들 중 임의의 것의 적층막을 포함하는, 반도체 장치. - 제1항, 제2항, 및 제4항 중 어느 한 항에 있어서,
상기 게이트 절연층은 산화 실리콘, 산화 질화 실리콘, 질화 산화 실리콘, 질화 실리콘, 산화 알루미늄, 산화 하프늄, 및 산화 탄탈 중 임의의 것의 단층막 또는 라미네이트막(laminate film)을 포함하는, 반도체 장치. - 제4항에 있어서,
상기 소스 전극층 및 상기 드레인 전극층 각각은 테이퍼 형상을 갖는, 반도체 장치. - 제1항, 제2항, 및 제4항 중 어느 한 항에 있어서,
상기 산화물 반도체층 내에 형성된 채널의 길이는 3.0㎛ 이하인, 반도체 장치. - 제11항에 있어서,
상기 산화물 반도체층 내에 형성된 채널의 길이는 0.2㎛ 이상인, 반도체 장치. - 제1항, 제2항, 및 제4항 중 어느 한 항에 있어서,
상기 결정의 지름은 1nm 이상이고, 20nm 이하인, 반도체 장치. - 전자 장치로서,
제1항, 제2항, 및 제4항 중 어느 한 항에 따른 반도체 장치를 포함하는, 전자 장치.
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| US20140191232A1 (en) | 2014-07-10 |
| JP5701582B2 (ja) | 2015-04-15 |
| US8680521B2 (en) | 2014-03-25 |
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| JP2018148232A (ja) | 2018-09-20 |
| JP2011135059A (ja) | 2011-07-07 |
| TW201605052A (zh) | 2016-02-01 |
| TWI517386B (zh) | 2016-01-11 |
| JP2015122530A (ja) | 2015-07-02 |
| US20110127525A1 (en) | 2011-06-02 |
| KR20180059577A (ko) | 2018-06-04 |
| US9570628B2 (en) | 2017-02-14 |
| CN102640293A (zh) | 2012-08-15 |
| TWI632687B (zh) | 2018-08-11 |
| US20130140560A1 (en) | 2013-06-06 |
| US9184299B2 (en) | 2015-11-10 |
| CN102640293B (zh) | 2015-07-22 |
| KR20120099450A (ko) | 2012-09-10 |
| US8373203B2 (en) | 2013-02-12 |
| TW201727914A (zh) | 2017-08-01 |
| WO2011065198A1 (en) | 2011-06-03 |
| JP6349440B2 (ja) | 2018-06-27 |
| JP2017175152A (ja) | 2017-09-28 |
| US20160064572A1 (en) | 2016-03-03 |
| TWI585981B (zh) | 2017-06-01 |
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