KR20010101386A - 90 나노미터 이하의 두께를 갖는 강유전성 박막을 지닌강유전성 메모리와 그 제조 방법 - Google Patents
90 나노미터 이하의 두께를 갖는 강유전성 박막을 지닌강유전성 메모리와 그 제조 방법 Download PDFInfo
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- ferroelectric
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- layered superlattice
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/55—Capacitors with a dielectric comprising a perovskite structure material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- Formation Of Insulating Films (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims (20)
- 강유전성 박막(124), 및 전계를 상기 강유전성 박막에 적용하기 위한 전극(126)을 포함하는 강유전성 메모리 요소(128)로 이루어진 강유전성 집적 회로 메모리 셀(100)에 있어서,상기 강유전성 박막은 90나노미터 이하의 두께를 갖는 것을 특징으로 하는 강유전성 메모리 셀.
- 제 1 항에 있어서, 상기 두께는 500나노미터 이하인 것을 특징으로 하는 강유전성 메모리 셀.
- 제 1 항 또는 제 2 항에 있어서, 상기 강유전성 박막은 7μC/cm2보다 큰 분극성을 갖는 것을 특징으로 하는 강유전성 메모리 셀.
- 제 1 항 또는 제 2 항에 있어서, 상기 강유전성 박막은 층상 초격자 물질로 이루어지는 것을 특징으로 하는 강유전성 메모리 셀.
- 제 4 항에 있어서, 상기 층상 초격자 물질은 스트론튬, 비스무스 및 탄탈륨으로 이루어지는 것을 특징으로 하는 강유전성 메모리 셀.
- 제 4 항에 있어서, 상기 층상 초격자 물질은 스트론튬의 u 몰-등가물, 비스무스의 v 몰-등가물, 및 탄탈륨의 w 몰-등가물을 포함하는데, 0.8≤u≤1.0, 2.0≤v≤2.3, 및 1.9≤w≤2.1인 것을 특징으로 하는 강유전성 메모리 셀.
- 제 4 항에 있어서, 층상 초격자 물질은 스트론튬, 비스무스, 탄탈륨 및 니오브로 이루어지는 것을 특징으로 하는 강유전성 메모리 셀.
- 제 7 항에 있어서, 상기 층상 초격자 물질은 스트론튬의 u 몰-등가물, 비스무스의 v 몰-등가물, 탄탈륨의 w 몰-등가물, 및 니오브의 x 등가물을 포함하는데, 0.8≤u≤1.0, 2.0≤v≤2.3, 1.9≤w≤2.1, 1.9≤x≤2.1 및 1.9≤(w+x)≤2.1인 것을 특징으로 하는 강유전성 메모리 셀.
- 강유전성 박막(124), 및 전계를 상기 강유전성 박막에 적용하기 위한 전극(126)을 포함하는 강유전성 메모리 요소(128)로 이루어진 강유전성 집적 회로 메모리 셀(100)에 있어서,상기 강유전성 박막은 90나노미터 이하의 두께를 갖는 층상 초격자 물질로 이루어지는 것을 특징으로 하는 강유전성 메모리 셀.
- 제 9 항에 있어서, 상기 두께는 500나노미터 이하인 것을 특징으로 하는 강유전성 메모리 셀.
- 제 9 항 또는 제 10 항에 있어서, 상기 강유전성 박막은 7μC/cm2보다 큰 분극성을 갖는 것을 특징으로 하는 강유전성 메모리 셀.
- 기판(122)을 제공하는 단계(212); 전구물질을 가열함에 따라 층상 초격자 물질을 자동 형성하기 위해 상당한 양의 금속 부분을 함유하는 전구물질을 제공하는 단계(222); 코팅물을 형성시키도록 상기 기판에 전구물질을 도포시키는 단계(224);로 이루어진 강유전성 집적 회로 메모리(100)를 제조하는 방법에 있어서,상기 기판 위에 90나노미터 이하의 두께를 갖는 강유전성 물질의 박막(124)을 형성시키도록 700℃를 초과하지 않는 온도로 상기 코팅물을 가열시키는 단계(226,230); 및상기 집적 회로 메모리의 활성 구성요소(128)인 박막을 포함하도록 상기 집적 회로를 완성시키는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 12 항에 있어서, 상기 가열 단계는 2시간을 초과하지 않는 시간동안 실행되는 것을 특징으로 하는 방법.
- 제 12 항에 있어서, 상기 가열 단계는 코팅물의 고속 열처리 단계를 포함하며, 상기 고속 열처리 단계는 675℃를 초과하지 않는 온도에서 수행되는 것을 특징으로 하는 방법.
- 제 14 항에 있어서, 상기 고속 열처리 단계는 초당 100℃의 램핑율로 30초동안 수행되는 것을 특징으로 하는 방법.
- 제 12, 13, 14, 또는 15 항에 있어서, 상기 도포 단계는 연무 증착법을 포함하는 것을 특징으로 하는 방법.
- 제 12, 13,14, 또는 15 항에 있어서, 상기 박막은 50nm를 초과하지 않는 두께를 갖는 것을 특징으로 하는 방법.
- 제 12, 13, 14, 또는 15 항에 있어서, 상기 강유전성 박막은 7μC/cm2보다 큰 분극성을 갖는 것을 특징으로 하는 방법.
- 제 12, 13, 14, 또는 15 항에 있어서, 상기 강유전성 물질은 층상 초격자 물질로 이루어지는 것을 특징으로 하는 방법.
- 제 19 항에 있어서, 상기 층상 초격자 물질은 스트론튬 비스무스 탄탈레이트 및 스트론튬 비스무스 탄탈륨 니오베이트로 이루어지는 그룹으로부터 선택된 물질로 이루어지는 것을 특징으로 하는 방법.
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US09/228,578 | 1999-01-11 | ||
US09/228,578 US6104049A (en) | 1997-03-03 | 1999-01-11 | Ferroelectric memory with ferroelectric thin film having thickness of 90 nanometers or less, and method of making same |
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EP (1) | EP1151475A1 (ko) |
JP (1) | JP3730122B2 (ko) |
KR (1) | KR100417743B1 (ko) |
CN (1) | CN1237618C (ko) |
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WO (1) | WO2000042660A1 (ko) |
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CN1237618C (zh) | 2006-01-18 |
TW461110B (en) | 2001-10-21 |
WO2000042660A1 (en) | 2000-07-20 |
EP1151475A1 (en) | 2001-11-07 |
JP2002535838A (ja) | 2002-10-22 |
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JP3730122B2 (ja) | 2005-12-21 |
US6104049A (en) | 2000-08-15 |
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