KR100800254B1 - 비휘발성 저항 가변 장치 및 프로그램가능 메모리 셀의형성 방법 - Google Patents
비휘발성 저항 가변 장치 및 프로그램가능 메모리 셀의형성 방법 Download PDFInfo
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Abstract
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Claims (35)
- 비휘발성 저항 가변 장치의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 하나 이상의 원소를 포함하는 단계;상기 칼코게나이드 재료 위에 은 포함 층을 형성하는 단계;은을 조사하여 상기 은 포함 층과 칼코게나이드 재료와의 계면에서 칼코게나이드 재료의 칼코게나이드 결합을 효과적으로 끊고 일부 또는 전부의 은을 칼코게나이드 재료에 확산시키고, 칼코게나이드 재료의 외주면을 형성하는 단계;조사 후에, 요오드 포함 유동체에 칼코게나이드 재료 외주면을 노출시켜, 칼코게나이드 재료 외주면의 거칠기를 상기 노출 전의 상태로부터 감소시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시켜 상기 칼코게나이드 재료를 포함하는 영역 위를 연속하여 완전히 피복하고, 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제4항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 은 포함 층은 원소 은을 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 조사는 외주면의 일부 또는 전부로서 Ag2Se를 형성하는데 효과적이고, 에칭은 Ag2Se의 일부 또는 전부를 에칭하여 버리는데 효과적이고 그럼으로써 상기 거칠기 감소에 기여하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, "A"는 Ge를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 비휘발성 저항 가변 장치를 메모리 회로의 프로그램가능 메모리 셀에 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 제1 도전 전극 재료와 제2 도전 전극 재료는 다른 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 비휘발성 저항 가변 장치의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 하나 이상의 원소를 포함하는 단계;상기 칼코게나이드 포함 재료를 형성한 후에, 상기 칼코게나이드 포함 재료 위에 Ag2Se를 형성하는 단계;조사 후에, Ag2Se의 일부 또는 전부를 에칭하여 버리는데 효과적인 요오드 포함 유동체에 Ag2Se를 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시키고 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, "A"는 Ge를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 비휘발성 저항 가변 장치를 메모리 회로의 프로그램가능 메모리 셀에 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제16항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 제2 도전 전극 재료를 피착시켜 칼코게나이드 재료를 포함하는 영역 위를 연속하여 완전히 피복하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 노출은 Ag2Se의 모두를 에칭하여 버리는데 효과적인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 비휘발성 저항 가변 장치의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 하나 이상의 원소를 포함하는 단계;상기 칼코게나이드 포함 재료를 형성한 후에, 상기 칼코게나이드 포함 재료 위에 Ag2Se의 비연속 층을 형성하는 단계;조사 후에, 일부 또는 전부의 Ag2Se를 에칭하여 버리는데 효과적인 요오드 포함 유동체에 Ag2Se를 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시켜, 칼코게나이드 재료를 포함하는 영역 위를 연속하여 완전히 피복하고, 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제23항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 노출은 Ag2Se의 모두를 에칭하여 버리는데 효과적인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 메모리 회로의 프로그램가능 메모리 셀의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 비정질의 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 하나 이상의 원소를 포함하는 단계;상기 칼코게나이드 포함 재료 위에 은 포함 층을 형성하는 단계;은을 조사하여 상기 은 포함 층과 칼코게나이드 재료와의 계면에서 칼코게나이드 재료의 칼코게나이드 결합을 효과적으로 끊고 일부 또는 전부의 은을 칼코게나이드 재료에 확산시키는 단계로서, 조사는 칼코게나이드 포함 재료 위에 Ag2Se의 비연속 층을 효과적으로 형성하도록 행해지고, 조사는 Ag2Se의 아래에 놓이는 칼코게나이드 재료를 비정질 상태로 효과적으로 유지하게 행해지는 단계;조사 후에, 일부 또는 전부의 Ag2Se를 에칭하여 버리는데 효과적인 요오드 포함 유동체에 Ag2Se를 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시켜, 칼코게나이드 재료를 포함하는 영역 위를 연속하여 완전히 피복하고, 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제29항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 은 포함 층은 원소 은을 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, "A"는 Ge를 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 노출은 Ag2Se의 모두를 에칭하여 버리는데 효과적인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 프로그램가능 메모리 셀의 형성방법으로서, 상기 방법은,기판 위에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계;상기 칼코게나이드 포함 재료 위에 금속 함유 층을 형성하는 단계;상기 금속 함유 층의 일부 또는 전부를 상기 칼코게나이드 포함 재료에 확산시키는 단계로서, 상기 확산 단계에서 상기 칼코게아니드 포함 재료 상에 거친 외주면을 형성하는 단계;상기 거친 외주면의 일부 또는 전부를 에칭하여 버림으로써 상기 외주면의 거칠기를 감소시키는 요오드 포함 유동체에 상기 거친 외주면을 노출시키는 단계; 및상기 칼코게나이드 포함 재료 위에 제2 도전 전극 재료를 형성하는 단계를 포함하는 프로그램가능 메모리 셀의 형성방법.
- 칼코게나이드 구조를 형성하는 방법으로서, 상기 방법은,칼코게나이드 글라스 층을 형성하는 단계;상기 칼코게나이드 글라스 층 위에 금속 함유 층을 형성하는 단계;상기 금속 함유 층의 일부 또는 전부를 상기 칼코게나이드 글라스 층으로 확산시켜 상기 칼코게나이드 글라스 층의 일부 또는 전부 상에 거친 외주면을 형성하는 단계로서, 상기 거친 외주면은 주기율표의 13족, 14족, 15족 또는 17족에서 선택되는 하나 이상의 원소를 포함하는 단계; 및상기 거친 외주면의 일부 또는 전부를 제거하는 요오드 포함 유동체로 상기 거친 외주면을 평탄하게 하는 단계를 포함하는 칼코게나이드 구조 형성 방법.
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| US09/943,187 US6784018B2 (en) | 2001-08-29 | 2001-08-29 | Method of forming chalcogenide comprising devices and method of forming a programmable memory cell of memory circuitry |
| PCT/US2002/027929 WO2003019691A2 (en) | 2001-08-29 | 2002-08-28 | Manufacturing of non-volatile resistance variable devices and programmable memory cells |
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- 2002-08-28 AU AU2002335692A patent/AU2002335692A1/en not_active Abandoned
- 2002-08-28 JP JP2003523032A patent/JP4067490B2/ja not_active Expired - Lifetime
- 2002-08-28 DE DE60216942T patent/DE60216942T2/de not_active Expired - Lifetime
- 2002-08-28 WO PCT/US2002/027929 patent/WO2003019691A2/en not_active Ceased
- 2002-08-28 EP EP02770455A patent/EP1430548B1/en not_active Expired - Lifetime
-
2004
- 2004-04-16 US US10/825,319 patent/US7067348B2/en not_active Expired - Fee Related
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2006
- 2006-05-09 US US11/430,046 patent/US7396699B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847674A (en) * | 1987-03-10 | 1989-07-11 | Advanced Micro Devices, Inc. | High speed interconnect system with refractory non-dogbone contacts and an active electromigration suppression mechanism |
| US4800526A (en) * | 1987-05-08 | 1989-01-24 | Gaf Corporation | Memory element for information storage and retrieval system and associated process |
| WO1997048032A2 (en) * | 1996-05-30 | 1997-12-18 | Axon Technologies Corporation | Programmable metallization cell and method of making |
| US5812441A (en) * | 1996-10-21 | 1998-09-22 | Micron Technology, Inc. | MOS diode for use in a non-volatile memory cell |
| US5978258A (en) * | 1996-10-21 | 1999-11-02 | Micron Technology, Inc. | MOS diode for use in a non-volatile memory cell background |
| WO1999028914A2 (en) * | 1997-12-04 | 1999-06-10 | Axon Technologies Corporation | Programmable sub-surface aggregating metallization structure and method of making same |
| WO2000048196A1 (en) | 1999-02-11 | 2000-08-17 | Arizona Board Of Regents | Programmable microelectronic devices and methods of forming and programming same |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060270099A1 (en) | 2006-11-30 |
| CN1550048B (zh) | 2011-01-12 |
| JP2005501426A (ja) | 2005-01-13 |
| US20030049912A1 (en) | 2003-03-13 |
| US7396699B2 (en) | 2008-07-08 |
| KR20040035747A (ko) | 2004-04-29 |
| DE60216942D1 (de) | 2007-02-01 |
| AU2002335692A1 (en) | 2003-03-10 |
| CN1550048A (zh) | 2004-11-24 |
| JP4067490B2 (ja) | 2008-03-26 |
| ATE349076T1 (de) | 2007-01-15 |
| EP1430548B1 (en) | 2006-12-20 |
| DE60216942T2 (de) | 2007-10-04 |
| WO2003019691A3 (en) | 2004-01-08 |
| US7067348B2 (en) | 2006-06-27 |
| EP1430548A2 (en) | 2004-06-23 |
| US20040191961A1 (en) | 2004-09-30 |
| WO2003019691A2 (en) | 2003-03-06 |
| US6784018B2 (en) | 2004-08-31 |
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