KR970018530A - Capacitor Manufacturing Method of Semiconductor Memory Device - Google Patents

Capacitor Manufacturing Method of Semiconductor Memory Device Download PDF

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Publication number
KR970018530A
KR970018530A KR1019950029496A KR19950029496A KR970018530A KR 970018530 A KR970018530 A KR 970018530A KR 1019950029496 A KR1019950029496 A KR 1019950029496A KR 19950029496 A KR19950029496 A KR 19950029496A KR 970018530 A KR970018530 A KR 970018530A
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South Korea
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oxide
forming
electrode
film
films
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KR1019950029496A
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Korean (ko)
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박인성
권기원
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김광호
삼성전자 주식회사
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Priority to KR1019950029496A priority Critical patent/KR970018530A/en
Publication of KR970018530A publication Critical patent/KR970018530A/en

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Abstract

반도체 메모리소자의 커패시터의 제조방법에 대해 기재되어 있다. 이는, 반도체 기판상에 금속성의 제1전극을 형성하는 제1단계, 제1전극을 미량의 산소를 함유하는 불휘발성 가스 분위기에서 열처리함으로써 제1금속 산화질화막을 형성하는 제2단계, 열처리된 제1전극 표면에 유전체막을 형성하는 제3단계 및 유전체막 상에 금속성의 제2전극을 형성하는 제4단계를 포함하는 것을 특징으로 한다. 따라서, 유전체막의 산소결핍에 의한 누설전류발생을 방지하였다.A method of manufacturing a capacitor of a semiconductor memory device is described. This is a first step of forming a first metallic electrode on a semiconductor substrate, a second step of forming a first metal oxynitride film by heat-treating the first electrode in a nonvolatile gas atmosphere containing a small amount of oxygen, And a fourth step of forming a dielectric film on the first electrode surface and a fourth step of forming a second metallic electrode on the dielectric film. Therefore, leakage current generation due to oxygen deficiency of the dielectric film was prevented.

Description

반도체 메모리소자의 커패시터 제조방법Capacitor Manufacturing Method of Semiconductor Memory Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 의한 메모리소자의 커패시터 제조방법을 설명하기 위해 도시한 단면도이다.2 is a cross-sectional view illustrating a method of manufacturing a capacitor of a memory device according to the present invention.

Claims (11)

반도체 기판상에 금속성의 제1전극을 형성하는 제1단계; 상기 제1전극을 미량의 산소를 함유하는 불휘발성 가스 분위기에서 열처리함으로써 제1금속 산화질화막을 형성하는 제2단계; 상기 열처리된 제1전극 표면에 유전체막을 형성하는 제3단계; 및 상기 유전체막 상에 금속성의 제2전극을 형성하는 제4단계를 포함하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.A first step of forming a metallic first electrode on the semiconductor substrate; A second step of forming a first metal oxynitride film by heat-treating the first electrode in a nonvolatile gas atmosphere containing a small amount of oxygen; A third step of forming a dielectric film on the heat treated first electrode surface; And forming a second metallic electrode on the dielectric layer. 제1항에 있어서, 상기 제4단계 후, 제2전극이 형성되어 있는 반도체 기판을 열처리함으로써 상기 유전체막과 제2전극 사이에 제2금속 산화질화막을 형성하는 공정을 추가하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The semiconductor according to claim 1, further comprising a step of forming a second metal oxynitride film between the dielectric film and the second electrode by heat-treating the semiconductor substrate on which the second electrode is formed after the fourth step. A capacitor manufacturing method of a memory device. 제1항에 있어서, 상기 제1 및 제2전극은 티타늄(Ti), 탄탈륨(Ta), 니오브(Nb), 텅스텐(W), 하프늄(Hf), 이트륨(Y) 및 바나듐(V)등의 천이금속 중 어느 하나, 이들 천이금속의 질화막 및 이들 천이금속의 실리사이드 중 어느 하나를 사용하여 형성되는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The method of claim 1, wherein the first and second electrodes are made of titanium (Ti), tantalum (Ta), niobium (Nb), tungsten (W), hafnium (Hf), yttrium (Y), vanadium (V), and the like. A method for manufacturing a capacitor of a semiconductor memory device, characterized in that it is formed using any one of transition metals, nitride films of these transition metals, and silicides of these transition metals. 제3항에 있어서, 상기 유전체막은 탄탈륨 산화막(Ta2O5), 이트륨 산화막(Y2O3), 바나듐 산화막(vanadium oxide) 및 하프늄 산화막(HfO2),니오브 산화막(Nb2O5) 및 티타늄 산화막(TiO2) 중 어느 하나로 구성된 단일막, 이들 단일막 중 하나 이상의 산화막으로 구성된 다중막 및 이들 산화막들 중 하나 이상의 산화막으로 구성된 복합조성막 중 어느 하나로 형성되는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The dielectric film of claim 3, wherein the dielectric film is a tantalum oxide film (Ta 2 O 5 ), an yttrium oxide (Y 2 O 3 ), a vanadium oxide (vanadium oxide) and a hafnium oxide (HfO 2 ), a niobium oxide (N b 2 O 5 ), and 1. A semiconductor memory device comprising: a single film composed of any one of titanium oxide films (TiO 2 ), a multiple film composed of one or more oxide films of these single films, and a composite film composed of one or more oxide films of these oxide films. Capacitor manufacturing method. 제1항에 있어서, 상기 제3단계 후, 오존(O3) 분위기에서 상기 유전체막을 열처리하는 공정을 추가하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The method of claim 1, further comprising, after the third step, adding a heat treatment to the dielectric film in an ozone (O 3 ) atmosphere. 제1항에 있어서, 상기 제2단계는 200℃~800℃의 온도범위에서 실시하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The method of claim 1, wherein the second step is performed at a temperature in a range of 200 ° C. to 800 ° C. 6. 반도체 기판 상에 금속성의 제1전극을 형성하는 제1단계; 상기 제1전극을 불휘발성 가스 분위기에서 열처리하는 제2단계; 상기 열처리된 제1전극 표면에 유전체막을 형성하는 제3단계; 및 상기 유전체막 상에 금속성의 제2전극을 형성하는 제4단계를 포함하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.Forming a first metallic electrode on the semiconductor substrate; A second step of heat-treating the first electrode in a nonvolatile gas atmosphere; A third step of forming a dielectric film on the heat treated first electrode surface; And forming a second metallic electrode on the dielectric layer. 제7항에 있어서, 상기 제1 및 제2전극은 티타늄(Ti), 탄탈륨(Ta), 니오브(Nb), 텅스텐(W), 하프늄(Hf), 이트륨(Y) 및 바나듐(V) 등의 천이금속 중 어느 하나, 이들 천이금속의 질화막 및 이들 천이금속의 실리사이드 중 어느 하나를 사용하여 형성되는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The method of claim 7, wherein the first and second electrodes are made of titanium (Ti), tantalum (Ta), niobium (Nb), tungsten (W), hafnium (Hf), yttrium (Y), and vanadium (V). A method for manufacturing a capacitor of a semiconductor memory device, characterized in that it is formed using any one of transition metals, nitride films of these transition metals, and silicides of these transition metals. 제8항에 있어서, 상기 유전체막은 탄탈륨 산화막(Ta2O5), 이트륨 산화막(Y2O3), 바나듐 산화막(vanadium oxide), 하프듐 산화막(HfO2), 니오브 산화막(Nb2O5) 및 티타늄 산화막(TiO2)중 어느 하나로 구성된 단일막, 이들 산화막들 중 하나 이상의 산화막으로 구성된 다중막 및 이들 산화막들 중 하나 이상의 산화막으로 구성된 복합조성막 중 어느 하나 이상의 산화막으로 구성된 다중막 및 이들 산화막들 중 하나 이상의 산화막으로 구성된 복합조성막 중 어느 하나로 형성되는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The dielectric film of claim 8, wherein the dielectric film is a tantalum oxide film (Ta 2 O 5 ), an yttrium oxide (Y 2 O 3 ), a vanadium oxide (vanadium oxide), a hafdium oxide (HfO 2 ), or a niobium oxide (Nb 2 O 5 ). And a multi-layer composed of one or more oxide films of a single layer composed of any one of titanium oxide films (TiO 2 ), a multi-layer composed of one or more oxide films of these oxide films, and a composite film composed of one or more oxide films of these oxide films, and these oxide films Method for manufacturing a capacitor of a semiconductor memory device, characterized in that formed of any one of a composite composition film composed of one or more oxide films. 제8항에 있어서, 상기, 제2단계는, 헬륨(He), 질소(N2), 아르곤(Ar), 크세논(Xe) 및 암모늄(NH3) 등의 산소를 함유하지 않은 가스 분위기에서 실시하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The method of claim 8, wherein the second step is performed in a gas atmosphere containing no oxygen such as helium (He), nitrogen (N 2 ), argon (Ar), xenon (Xe), and ammonium (NH 3 ). Capacitor manufacturing method of a semiconductor memory device, characterized in that. 제10항에 있어서, 상기 가스 분위기에 1ppb-10%의 산소를 추가하여 열처리하는 것을 특징으로 하는 반도체 메모리소자의 커패시터 제조방법.The method of claim 10, wherein 1ppb-10% of oxygen is added to the gas atmosphere to perform heat treatment.
KR1019950029496A 1995-09-11 1995-09-11 Capacitor Manufacturing Method of Semiconductor Memory Device KR970018530A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431306B1 (en) * 2002-08-30 2004-05-12 주식회사 하이닉스반도체 Method for formig gate of semiconductor device using gate oxide made of double film of aluminium oxide and yttrium oxynitride
KR100455365B1 (en) * 1997-05-07 2005-02-28 삼성전자주식회사 Method for forming inter-polysilicon dielectric layer of non-volitile memory device
KR100455737B1 (en) * 1998-12-30 2005-04-19 주식회사 하이닉스반도체 Gate oxide film formation method of semiconductor device
KR100546163B1 (en) * 1998-09-21 2007-12-12 주식회사 하이닉스반도체 Capacitor Formation Method of Semiconductor Device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455365B1 (en) * 1997-05-07 2005-02-28 삼성전자주식회사 Method for forming inter-polysilicon dielectric layer of non-volitile memory device
KR100546163B1 (en) * 1998-09-21 2007-12-12 주식회사 하이닉스반도체 Capacitor Formation Method of Semiconductor Device
KR100455737B1 (en) * 1998-12-30 2005-04-19 주식회사 하이닉스반도체 Gate oxide film formation method of semiconductor device
KR100431306B1 (en) * 2002-08-30 2004-05-12 주식회사 하이닉스반도체 Method for formig gate of semiconductor device using gate oxide made of double film of aluminium oxide and yttrium oxynitride

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