JPH0547979B2 - - Google Patents

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Publication number
JPH0547979B2
JPH0547979B2 JP58052300A JP5230083A JPH0547979B2 JP H0547979 B2 JPH0547979 B2 JP H0547979B2 JP 58052300 A JP58052300 A JP 58052300A JP 5230083 A JP5230083 A JP 5230083A JP H0547979 B2 JPH0547979 B2 JP H0547979B2
Authority
JP
Japan
Prior art keywords
layer
substrate
oxide film
silicon
silicide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP58052300A
Other languages
English (en)
Other versions
JPS58176975A (ja
Inventor
Shuwaabe Ururitsuhi
Netsupuru Furantsu
Hiibaa Konraato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of JPS58176975A publication Critical patent/JPS58176975A/ja
Publication of JPH0547979B2 publication Critical patent/JPH0547979B2/ja
Granted legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D30/00—Field-effect transistors [FET]
    • H10D30/01—Manufacture or treatment
    • H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
    • H10D30/0215—Manufacture or treatment of FETs having insulated gates [IGFET] using self-aligned selective metal deposition simultaneously on gate electrodes and the source regions or drain regions
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D30/00—Field-effect transistors [FET]
    • H10D30/01—Manufacture or treatment
    • H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
    • H10D30/0223—Manufacture or treatment of FETs having insulated gates [IGFET] having source and drain regions or source and drain extensions self-aligned to sides of the gate
    • H—ELECTRICITY
    • 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
    • H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
    • H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/01—Manufacture or treatment
    • H10D64/011—Manufacture or treatment of electrodes ohmically coupled to a semiconductor
    • H10D64/0111—Manufacture or treatment of electrodes ohmically coupled to a semiconductor to Group IV semiconductors
    • H10D64/0112—Manufacture or treatment of electrodes ohmically coupled to a semiconductor to Group IV semiconductors using conductive layers comprising silicides
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/01—Manufacture or treatment
    • H10D64/013—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator
    • H10D64/01302—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon
    • H10D64/01304—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
    • H10D64/01306—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon
    • H10D64/01308—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon the conductor further comprising a non-elemental silicon additional conductive layer, e.g. a metal silicide layer formed by the reaction of silicon with an implanted metal
    • H10D64/01312—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon the conductor further comprising a non-elemental silicon additional conductive layer, e.g. a metal silicide layer formed by the reaction of silicon with an implanted metal the additional layer comprising a metal or metal silicide formed by deposition, i.e. without a silicidation reaction, e.g. sputter deposition
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions 
    • H10D64/23—Electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. sources, drains, anodes or cathodes
    • H10D64/251—Source or drain electrodes for field-effect devices
    • H10D64/258—Source or drain electrodes for field-effect devices characterised by the relative positions of the source or drain electrodes with respect to the gate electrode
    • H10D64/259—Source or drain electrodes being self-aligned with the gate electrode and having bottom surfaces higher than the interface between the channel and the gate dielectric
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/60—Electrodes characterised by their materials
    • H10D64/62—Electrodes ohmically coupled to a semiconductor
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/60—Electrodes characterised by their materials
    • H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
    • H10D64/661—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation
    • H10D64/662—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures
    • H10D64/663—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures the additional layers comprising a silicide layer contacting the layer of silicon, e.g. polycide gates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W20/00—Interconnections in chips, wafers or substrates
    • H10W20/01—Manufacture or treatment
    • H10W20/031—Manufacture or treatment of conductive parts of the interconnections
    • H10W20/056—Manufacture or treatment of conductive parts of the interconnections by filling conductive material into holes, grooves or trenches
    • H10W20/057—Manufacture or treatment of conductive parts of the interconnections by filling conductive material into holes, grooves or trenches by selectively depositing, e.g. by using selective CVD or plating
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W20/00—Interconnections in chips, wafers or substrates
    • H10W20/01—Manufacture or treatment
    • H10W20/031—Manufacture or treatment of conductive parts of the interconnections
    • H10W20/064—Manufacture or treatment of conductive parts of the interconnections by modifying the conductivity of conductive parts, e.g. by alloying
    • H10W20/066—Manufacture or treatment of conductive parts of the interconnections by modifying the conductivity of conductive parts, e.g. by alloying by forming silicides of refractory metals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/01—Manufacture or treatment
    • H10D64/017—Manufacture or treatment using dummy gates in processes wherein at least parts of the final gates are self-aligned to the dummy gates, i.e. replacement gate processes

Landscapes

  • Electrodes Of Semiconductors (AREA)
  • Insulated Gate Type Field-Effect Transistor (AREA)

Description

【発明の詳細な説明】 この発明はシリコンゲート技術による集積
MOS電界効果トランジスタ回路の製造方法に関
する。この方法では拡散領域が高融点金属ケイ化
物層によつて低抵抗にされて導体路として使用さ
れるようになり、この金属ケイ化物層はポリシリ
コン層が作られ又ソース・ドレン領域となる区域
が形成された後にMOS構造が作られている半導
体基板表面に直接析出させる。
集積回路の構造寸法を縮小するには拡散領域の
深さの低減も必要となる。これによつて層抵抗が
著しく増大し、n+型シリコン導体の場合遅延時
間が長くなり又ソース・ドレン直列抵抗が過大と
なり短チヤネルトランジスタの機能を阻害する。
これらの難点は拡散領域の自己整合形ケイ化物
化によつて避けることができる。この工程段階に
おいて同時にポリシリコン・ゲートにもケイ化物
が作られポリジツド・ゲートとなる。これに対し
てケイ化白金を使用することは文献（Proceedi
−ngs of IEMD 81，paper No.28.2，p.647−
650）に記載されている。このケイ化白金は蒸着
した白金とシリコン基板の間に反応によつて作ら
れる。この方法の欠点は次の４点である： (a) ケイ化物化する際シリコンが消費され、扁平
な拡散領域では基板への短絡が生ずる。
(b) 耐熱性が800℃以下の温度に限定される。
(c) 拡散障壁を持つ高価な金属化装置が必要とな
り、又多重層に対するエツチングの問題が起
る。
(d) フツ化水素酸を含む化学薬品を使用する過程
とコンパチブルでない。
短絡の危険は白金とシリコンの混合物又は白金
とタングステンの混合物の析出によつて避けるこ
とができる。これによつて基板シリコンの消費を
少くすることができる（ただし白金・タングステ
ンの場合は低温においてだけ）。しかしこの場合
は自己整合性が失われ、フオトリソグラフイ過程
が必要となる。
自己整合性の別法として選択的のタングステン
析出法が提案されているがこの場合続く過程が
500℃以下の温度に限定され、これを越すとケイ
化タングステンがシリコン消費を伴つて形成され
る。これによつて扁平な拡散領域では基板短絡が
起る。
この発明の目的は基板内に極めて扁平な拡散領
域を持つ超大規模集積回路において拡散領域の層
抵抗の低減に金属ケイ化物を使用する問題を解決
しようとするものであつて外部接触導体路面とケ
イ化金属面の間の絶縁分離酸化膜の形成前に、熱
分解に際してハロゲン化水素を分離する反応ガス
を使用してガス相からの選択析出によつてケイ化
金属層構造を作ることを提案する。ケイ化金属と
してタンタル、タングステン、チタンおよびモリ
ブデンのケイ化物を使用することもこの発明の枠
内にある。
この発明の方法では基板内の拡散領域とポリシ
リコンゲート区域が高融点ケイ化物例えばケイ化
タングステンの選択析出によつて自己整合式にケ
イ化物で覆われ、それによつて抵抵抗（3Ω／□）
となるためソース・ドレン直列抵抗の低いMOS
電界効果トランジスタの製作が可能となる。
更にケイ化物の選択析出によりフオトリソグラ
フ過程が不必要となる。ケイ化タンタルを使用す
ると接着性が良くなりケイ化タンタル・シリコン
系は1000℃の温度においても安定である。これに
よつてこの発明の方法はシリコンゲート技術にお
ける通常の金属化処理過程とコンパチブルとな
る。
次に第１図乃至第６図についてこの発明の特に
有利な二つの実施例を説明する。これらの図面は
この発明の特に重要な工程段階においての処理物
の断面構造を示すもので対応部分には同じ番号が
つけてある。
第１図乃至第４図はポリシリコン表面の酸化防
止に窒化物層が使用されているMOS電界効果ト
ランジスタの製作工程を示し、第５図と第６図は
ポリシリコンゲート電極の形成後CVD酸化膜析
出と異方性エツチングが行なわれる場合に第１図
と第２図の構造が変化する情況を示す。
第１図：１００表面を持つ比抵抗２乃至50Ωcm
のｐドープシリコン単結晶基板１の表面に
LOCOS法によつてフイールド酸化膜区域２
（厚さdpx＝700nm）と能動領域が区画される。
窒化物マスクを除去した後能動領域を酸化して
厚さ40nmのゲート酸化膜３を作る。その上に
CVD法により厚さ500nmのポリシリコン層４
を全面的に析出させリンをドープしてn+型と
する。ポリシリコン層４の表面に窒化シリコン
層５を例えば100nmの厚さに全面的に析出させ
る。
第２図：窒化シリコン層５とその下のポリシリ
コン層４にポリシリコンゲート電極６に対応す
る構造を作り、続いて構造形成に際して露出し
た単結晶基板表面とポリシリコン層側面に熱酸
化によつて新に酸化膜を形成させ、高濃度ドー
プのポリシリコン領域６の側面では厚さが
200nmでありその他の単結晶領域８では60nm
であるように調節する。続いてヒ素イオンを注
入してn+ドープのソース・ドレン領域９を作
る。
第３図：マスクとして使用された窒化物層５を
除去し、全面的の酸化物エツチングを行つて酸
化膜８を全部除去する。続いてこの発明の重要
な段階である選択析出によりシリコンから成る
表面区域６と９の上にケイ化タンタル層１０を
析出させる。その際ケイ化タンタルは塩化水素
を分離する反応混合ガスから気相析出により析
出する。その時の圧力、析出温度および反応ガ
スの組成は、熱分解に際してハロゲン化水素が
存在することにより基板のシリコンから成る表
面区域６，９を除いてその他の区域２、７では
結晶核が形成されないように選ぶ。塩化タンタ
ルと水素とハロゲン化シラン例えばジクロルシ
ラン（SiH2Ｃ2）の混合比率は１：10：２
に、圧力は133Paに、基板温度は850℃に調整
する。ケイ化タンタル層１０の成長速度は
100nm／mm、層の厚さは300nm、比面積抵抗は
1.5乃至3Ω／□である。
第４図：ケイ化物の選択析出に続いてケイ化タ
ンタル面１０と金属化面１２の間の絶縁分離酸
化膜として作用する中間酸化膜１１を析出させ
る。これは例えばCVD法により層ん厚さは
1000nmとする。ケイ化タンタル１０で覆われ
たn+型領域９ｂに対する接触孔を食刻しＡ
／Si構成の導体路１２を公知の方法で作る。
第５図：この発明の方法の一つの変形として第
１図のLOCOS過程（フイールド酸化膜区域２
の形成と能動領域の区画）とゲート酸化膜３の
形成が終つた後CVD過程により厚さ500nmの
ポリシリコン層を析出させ、リンをドープして
ポリシリコンゲート電極としての構造を作る。
ゲート電極６で覆われていない基板表面部分の
ゲート酸化膜を除去した後CVD法により酸化
膜を全面的に析出させSiO2層１３を作る。
第６図：続いてSiO2層１３に異方性エツチン
グを施し、その際高濃度にドープされたポリシ
リコンゲート電極６の側面は酸化膜７で覆われ
たままにしておく。この処理は例えば反応性の
イオンエツチングによる。続いて行なわれる
n+ドープ単結晶ソース・ドレン領域９を作る
ためのヒ素イオン注入は第２図の場合と同じで
ある。ケイ化タンタル層１０の選択析出から金
属化処理に至るまでの工程段階は第３図と第４
図について説明した通りに実施される。
【図面の簡単な説明】
第１図乃至第４図はこの発明の一つの実施例の
種々の段階においての処理物の断面構造を示し、
第５図と第６図は別の実施例において第１図と第
２図に対応する断面構造を示す。 １……基板、２……フイールド酸化膜区域、３
……ゲート酸化膜、４……ポリシリコン層、５…
…窒化シリコン層、６……ポリシリコンゲート電
極、９……ソース・ドレン領域。

Claims (1)

  1. 【特許請求の範囲】 １ 半導体基板中にシリコンゲート技術により集
    積MOS電界効果トランジスタ回路を製造する方
    法であつて、 拡散領域が高融点金属ケイ化物から成る層を有
    し、拡散領域を低抵抗にしたがつて導体路として
    使用可能なようにし、 ポリシリコン平面を作成し回路のソース／ドレ
    イン領域として用いられる領域を生成した後、
    MOS構造を備えた半導体基板の上に直接析出す
    ることにより金属ケイ化物を生成するようになつ
    た方法において、 金属ケイ化物層構造はハロゲン化水素の熱分解
    の際分裂する反応ガスを使用してシリコンから成
    る半導体基板の表面領域の上にガス相からの選択
    的析出により生成され、 金属ケイ化物構造の析出は外部接触導体路面と
    金属ケイ化物面の間の絶縁酸化物の形成前に行わ
    れる、 ことを特徴とする集積MOS電界効果トランジス
    タ回路の製造方法。 ２ 金属ケイ化物としてタンタル、タングステ
    ン、チタンおよびモリブデンのケイ化物が使用さ
    れることを特徴とする特許請求の範囲第１項の方
    法。 ３ ケイ化物層の厚さが200乃至500nmであり、
    その層抵抗がケイ化タンタルの場合１cm2当たり
    1.5乃至3Ωに調製されることを特徴とする特許請
    求の範囲第１項又は第２項記載の方法。 ４ 次の工程： (a) 能動トランジスタ領域を絶縁分離のための
    SiO2構造層２をLOCOS法又はイソプレーナ法
    と呼ばれる方法によつてｐドープされた半導体
    基板表面に作る、 (b) 露出した基板表面を酸化してゲート酸化膜３
    を作る、 (c) 全面的にポリシリコン層４を析出させ、この
    層にｎ型ドーパントをドープしてn+型とし、
    これにポリシリコンゲート電極６としての構造
    を作る、 (d) ゲート電極で覆われない基板表面８のゲート
    酸化膜３を除去する、 (e) ガス相からSiO2層１３を析出させる（CVD
    法）、 (f) この酸化物層に異方性エツチングを施し、そ
    の際シリコンゲート電極の側面７が酸化物で覆
    われたままにしておく、 (g) トランジスタ領域にヒ素イオンを注入しｐド
    ープ基板内にn+型にドープされた単結晶ソー
    ス・ドレン領域９を作る、 (h) 反応に際して塩化水素を分離する反応ガスを
    使用してガス相からケイ化タンタルを析出さ
    せ、その際基板のシリコンから成る表面区域
    ６，９だけにケイ化タンタルが沈積するように
    する、 (i) 中間酸化膜として作用する絶縁層を析出させ
    る、 (j) 基板のケイ化物化された部分に対する外部接
    触導体路のための接触孔区域を腐食する、 (k) 金属層を形成させ外部接触導体路構造を作
    る、 によることを特徴とする特許請求の範囲第１項乃
    至第３項のいずれかに記載の集積MOS電界効果
    トランジスタ回路の製造方法。 ５ 次の工程： (a) ｐドープ半導体基板表面に能動トランジスタ
    領域を分離するためのSiO2構造層をLOCOS法
    又はイソプレーナ法と呼ばれる方法で作る、 (b) ｐ基板の露出表面を酸化してゲート酸化膜と
    する、 (c) 全面的にポリシリコン層を析出させ、この層
    にｎドーパントをドープしてn+型とする、 (d) 窒化シリコン層５を析出させ、この窒化シリ
    コン層とポリシリコン層から成る二重層に構造
    を作る、 (e) 熱酸化を行い、露出したシリコン表面に酸化
    膜を形成させ、高濃度ドープのポリシリコン層
    の側面に基板の単結晶部分８の酸化膜よりも厚
    い酸化膜を形成させる、 (f) トランジスタ領域にヒ素イオン注入を実施し
    たｐドープ基板内にn+型にドープされたソー
    ス・ドレン領域９を作る、 (g) 窒化物層５を除去する、 (h) 基板上の酸化膜を全面的に腐食除去して基板
    の単結晶区域表面を露出させる、 (i) 反応に際して塩化水素を分離する反応ガスを
    使用してガス相からケイ化タンタル層を析出さ
    せ、その際基板のシリコンから成る表面部分だ
    けにケイ化タンタルが沈積するようにする、 (j) 中間酸化膜として作用する絶縁分離層を析出
    させる、 (k) 基板ケイ化物化されたシリコン区域に接触導
    体路のための接触孔区域を腐食する、 (l) 外部接触導体路としての金属化面を設けこれ
    に構造を作る、 によることを特徴とする特許請求の範囲第１項乃
    至第３項のいずれかに記載の集積MOS電界効果
    トランジスタ回路の製造方法。 ６ 基板として１００表面を持ち比抵抗２乃至
    50Ωcmにｐドープされたシリコン単結晶板を使用
    することを特徴とする特許請求の範囲第４項記載
    の方法。 ７ 工程段階(e)においてCVD法による酸化膜の
    厚さが100乃至1000nmに調整されることを特徴と
    する特許請求の範囲第４項記載の方法。 ８ 工程段階(e)において酸化膜の厚さが200nmに
    調整されることを特徴とする特許請求の範囲第５
    項記載の方法。 ９ 工程段階(h)において酸化膜の腐食が60nmの
    厚さとなるまで行われることを特徴とする特許請
    求の範囲第５項記載の方法。
JP58052300A 1982-03-30 1983-03-28 集積ｍｏｓ電界効果トランジスタ回路の製造方法 Granted JPS58176975A (ja)

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Application Number Priority Date Filing Date Title
DE3211761.2 1982-03-30
DE19823211761 DE3211761A1 (de) 1982-03-30 1982-03-30 Verfahren zum herstellen von integrierten mos-feldeffekttransistorschaltungen in siliziumgate-technologie mit silizid beschichteten diffusionsgebieten als niederohmige leiterbahnen

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JPS58176975A JPS58176975A (ja) 1983-10-17
JPH0547979B2 true JPH0547979B2 (ja) 1993-07-20

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EP (1) EP0090318B1 (ja)
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AT (1) ATE44115T1 (ja)
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DE (1) DE3211761A1 (ja)

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JPS58176975A (ja) 1983-10-17
DE3211761C2 (ja) 1991-03-14
EP0090318B1 (de) 1989-06-14
EP0090318A2 (de) 1983-10-05
US4510670A (en) 1985-04-16
EP0090318A3 (en) 1986-01-15
ATE44115T1 (de) 1989-06-15
CA1203642A (en) 1986-04-22
DE3211761A1 (de) 1983-10-06

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