TW519760B - Doped zirconia, or zirconia-like, dielectric film transistor structure and deposition method for same - Google Patents

Doped zirconia, or zirconia-like, dielectric film transistor structure and deposition method for same Download PDF

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TW519760B
TW519760B TW090116500A TW90116500A TW519760B TW 519760 B TW519760 B TW 519760B TW 090116500 A TW090116500 A TW 090116500A TW 90116500 A TW90116500 A TW 90116500A TW 519760 B TW519760 B TW 519760B
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metal
group
doped
film
oxygen
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TW090116500A
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English (en)
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Yanjun Ma
Yoshi Ono
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Sharp Kk
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    • H01L29/76—Unipolar devices, e.g. field effect transistors
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Description

A7
本申請案為2000年2月29曰申請之美國 咖5,743號之部分接續_請案，該案_ 請案第 請之美國專利申請案第〇9/356,47()號 19曰中 之一部份。 寻利弟6,060,755號 數= 關於積體電路⑽製程，特別是高介電常 数之閘極七緣膜，以及此膜之沈積方法。 現有石夕晶超大規模集成技術使用二氧切 化石夕之氮化物，作為金屬氧化物半導 咐 介電質。隨著裝置尺寸的持續縮小，二氧切 == 必須」咸少以保持問極與通道區域之間相同的電：：二少 :=之(二厚二是广預期的。可是穿越此-二氧化 ::層之心道效應電流的出現，要求考慮替代材料。且 數的材料允許問極介電層做得更薄，並因而減 =;Γ流的問題。所謂“介電膜在本文中定義為 具有相對於二氣化石夕之高介電常數，二氧化石夕具有大 2 4的’I電常數’而高k膜具有大於約1〇的介電常數。現有 融之候選材料包括氧化鈦（Ti〇2)、氧化錯（Zr02)、氧化艇 (2〇5)以及鋇與銘鈦氧化物（（Ba，Sr)Ti03)。 上述同k ;丨電質有關的共同問題是它們在正常製備情 况下會產生晶系結構。結果，膜表面非常粗糙。表面粗糙 引2毗郴於介電膜通道區域之不均勻電場。此種介電膜不 適合作為金屬氧化物半導體場效應電晶體（M〇SFET)裝置 之閘極介電質。 · -4-
五、發明説明（2 ) 因為高直接隧道效應電流之故， 矽膜不能用作互補全屬a ' •不米的二氧化
補i屬虱化物半導體（C 介電質。現在尋找- 4j4、 以）展置的閘杈 一 寸找一虱化矽替代品的嘗試中，以 氧化鈕吸引最多的注意。古、、西 " ^ ^ ^ ^ ^ ΛΑ， j疋阿，皿後沈積退火，以及二氧 化石夕界面層的形成，使同等二氧 而）要㈣少於1-5奈米是非常困難的。（门專尽度 如果咼k介電膜可以用作全屬 作金屬虱化物+導體（MOS)電晶 體之閘極與底下通道區域的绍 、匕A的珑緣位障，那將會是 如果改良的高k介電材料可以蕻由简„„从协 ' 一 ％刊7叶j以猎由間早的摻雜，或者是 ，見存之冋k "電材料中添加額外的元素來形成，那將會 是個優點。 如果高k介電材料之電氣性質，包含電子親和力，可以 藉由隨單的摻雜’或者是在現存之高[介電材料中添加額 外的元素來改變，那將會是個優點。 發明摘要 如前所述，提供一具有高介電常數（1〇至25)之薄膜。此 膜含有摻雜金屬與氧，其中金屬選自由鍅（Zr)與铪（Hf)組 成之族群。摻雜金屬以鋁（A1)、銃（Sc)、鑭（La)，或釔（γ) 等二價金屬較佳，或者是二價金屬，如鈣（Ca)或勰（Sr)。 藉由選擇摻雜金屬，有可能變化沈積之介電材料的電子 親和力。而藉由改變電子親和力，可能變化電子的位障高 度與電洞的位障高度。因此，本發明允許我們修改介電膜 的電子親和力’同時產生具有比二氧化矽之介電常數高的 膜。此外’既然摻雜金屬的存在減少或消除晶系結構的形 -5- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 五、發明説明（3 ’摻雜金屬的存在傾向於產生非晶系的介電材料。 本發明提供以氧化記（Υ2〇3)、氧化約（Ca〇2)、氧化銘 A 、氧化鑭(La2〇3)、鑭(La)與銘⑽來安定之氧化結 (纟另一具體實施例中’提供_ 為介電材料。 通常膜中摻雜金屬之百分比不超過約游”在—些應用 中’摻雜金屬之百分比少於約1〇%，在此情況下產生之膜 可能不是非晶系的。 、 約20至200埃之厚度 。也提供金屬氧化物半導體場效應電晶體（m〇sfe乃。此 電晶體包含-閘極，一於該閘極之下具有上表面之通道區 或以及’丨於閘極電極與通道區域上表面之間的閘極介電 :N電膜的内合如上所述。通常，閘極介電膜具有範圍 人本發明之一些態樣尚包含具有一介面位障之電晶體，該 介面位障介於通道區域與閘極介電膜之間，厚度約為^至^ 埃之範圍。此介面材料係選自由氮化矽與氮氧化矽組成之 私群，藉以使通道區域之上表面製作得更平滑，以避免金 屬氧化物半導體場效應電晶體（MOSFET)之電子遷移率的 退化。 在具有表面之積體電路（IC)的製造中，也提供一濺鍍方 法以於積體電路表面形成金屬氧化物膜。此一方法包括+ 驟： / a) 建立一含有氧之非晶系； b) 在積體電路（1C)之矽晶表面濺鍍至少一種目標金 519760 A7 __ _ B7 五、發明説明（4 ) ’以及一種摻雜金屬，該目標金屬選自含有锆（Zr)與铪 (Hf)之族群，而摻雜金屬則諸如鈣（Ca)、勰（Sr)、鋁（μ)、 銃（Sc)、鑭（La)或釔（Y); 0因應步驟a)與b)，形成摻雜金屬氧化物膜；以及 d)於約攝氏400至900度範圍做退火熱處理，藉以形成 具有高介電常數與良好絕緣性質之薄膜。 本發明之一些態樣中，步驟a)包括個別目標之共同濺鍍 ’包括選自由锆（Zr)與給（Hf)組成之族群的第一種目標金 屬’以及在氧化之氣壓中摻雜金屬的第二種目標。 或者是提供沈積摻雜金屬氧化物膜之化學氣相沈積 (CVD)方法，其步驟包括·· a) 製備至少一種母體，其中含有選自由錘（Zr)與铪（Hf) 組成之族群的金屬，以及摻雜金屬； b) 蒸發該母體； c) 建立一含氧之氣壓； d) 藉由化學氣相沈積（CVD)，在積體電路（ic)表面上分 解該母體以沈積成一種合金膜，此膜含有選自由锆（Zr)與 給（Hf)組成之族群的金屬’推雜金屬’與氧；以及 e) 於約攝氏400至900度範圍做退火熱處理，藉以形成 具有高介電常數與良好位障性質之薄膜。 在另一個具體實施例中，使用亦稱為原子層沈積（A；LD) 之原子層化學氣相沈積（ALCVD)，作為一種沈積摻雜金屬 氧化膜的方法。原子層化學氣相_沈_ (ALC VD)方法包括步 驟： 本紙張尺度適用中國國家標準(CNS) A4規格(21〇x297公釐) a) 製備第一種母體，其中含有選自由錯與铪（Hf)組 成之族群的金屬； b) 条發第一種母體，並使積體電路（IC)表面曝露於該 ，體中，藉以將金屬之一層，以單層較佳，以化學之方法 吸附到表面，利用原子層化學氣相沈積（ALCVD)沈積金屬 層； c) 製備氧元素母體； 斤d)洛發氧兀素母體，並使積體電路（IC)表面曝露於該 =元素母體中，藉以將氧元素之一層，以單層較佳，以化 子之方法吸附到表面，利用原子層化學氣相沈積（alcvd) 沈積氧元素層； e)製備一含有摻雜金屬之摻雜金屬母體； 0瘵發摻雜金屬母體，並使積體電路（IC)表面曝露於該 払雜，屬母體中，藉以將彳參雜金屬之一層，以單層較佳， 、化子之方法吸附到表面，利用原子層化學氣相沈積 (ALCVD)沈積摻雜金屬層；以及 g)於約攝氏300至900度範圍做退火熱處理以調節沈積 層，藉以形成具有高介電常數與良好位障性質之薄膜。 需要時，藉由重複步驟，可以沈積介電質中各材料之多 層，繼而一個，或更多的其他組元層。所以舉例來說，可 於沈積幾層錯後，沈積氧元素，接著沈積摻雜金屬。然後 重複此一製程，直到沈積介電材料的總厚度，在氧化锆介 電材料中，具有所需之摻雜金屬數章。 還有在另一具體實施例中，提供沈積摻雜金屬氧化物膜 -8- 519760 A7 _________B7 五、發明説明（6 ) 之氣相沈積方法，其中包括步驟： a) 建立向度真空（無氣體）之氣壓，其值介於約1χ1〇-6與 1 χ 10·8托（Torr)之間； b) 製備至少一種坩堝，其中含有選自由錘（Zr)與銓（Hf) 組成之族群的金屬，以及摻雜金屬； c) 加熱至少一個坩堝至約攝氏1〇〇〇至2〇〇〇度之範圍， 以蒸發於步驟b)中製備之金屬； d) 因應於步驟a)至c)，沈積一合金膜，此膜含有選自由 锆（Z〇與铪（Hf)組成之族群的金屬，以及摻雜金屬；以及 e) 於約攝氏400至900度範圍，在含氧之氣壓中做退火 熱處理，以形成含氧金屬膜，藉以形成具有高介電常數與 良好位障性質之薄膜。 圖式簡單說明 圖1是一流程圖，說明本發明摻雜金屬氧化物膜之濺鍍 沈積方法。 圖2說明完成使用本發明製造之電晶體的一個步驟。 圖3說明完成使用本發明製造之電晶體的一個步驟。 圖4是一流程圖，說明形成本發明摻雜金屬氧化物膜之 化學氣相沈積（CVD)方法的步驟。 圖5是一流程圖，說明形成本發明摻雜金屬氧化物膜之 原子層化學氣相沈積（ALCVD)方法的步驟。 圖6是一流程圖，說明形成摻雜金屬氧化物膜之蒸發方 法的步驟。 發明詳細說明
A7 B7 五、發明説明（ _ f發明研究摻雜氧化錘。次微米之P型金屬氧化物半導 ^ ^效應電晶體（PM0SFE丁）已用錯氧化物（Zr-Ο)作閘極介 二=來=造，並具有極佳之特性。簡單地說，已經發現以 二價或三價摻雜金屬摻雜氧化鍅（Zr〇2)膜，是控制此膜的 包氣特〖生’特別是電子親和力，之能力的原因。 二^化矽，本發明是一具有高介電常數的薄膜，其 — 仏或一 ^貝的摻雜金屬，選自由錯（Zr)與給（Hf) 組成之族群的金屬，以及氧。摻雜金屬以鋁（A1)、銃（Sc) 、鑭（La)，或釔（γ)等三價金屬較佳，或者是二價金屬， 如鈣（Ca)或鳃（sr)。 在一些有用的應用中，薄膜通常具有2〇至2⑽埃範圍之 厚度’介電常數約10至25之範圍。 此膜中摻雜金屬的百分比，通常不超過約5〇〇/0。 圖1是一流程圖，說明本發明之摻雜金屬氧化物膜的濺 鍍沈積方法。步驟10提供一具有表面之積體電路（IC)。步 驟？建立一含氧之氣壓。通常步驟12包含亦含有氬氣⑽ 之氣壓，其中氧對氬的比例約為5至25%。壓力約為i至i〇 笔托（mT〇rr)。步驟14在ic表面上濺鍍至少一種選自由锆 (Zr)與铪（Hf)組成之族群的目標金屬。步驟14亦將摻雜金 屬濺鍍至積體電路（ic)表面。摻雜金屬以鋁（A1)、銃（Sc) 、鑭（La)，或釔（Y)等三價金屬較佳，或者是二價金屬， 如鈣（Ca)或鋰（Sr)。在本發明之一些態樣，步驟14包括個 別目標之共同濺鍍，包括選自*錯（Zr)與铪（Hf)組成之族 群的第一種目標金屬，以及含有摻雜金屬之第二種目標。 -10- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 519760 A7 B7 五、發明説明（9 介於通道區域52與閘極介電膜56之間，具有範圍約2至5埃 之厚度64。介面位障62包含選自由氮化矽與氮氧化矽組成 之族群之材料，藉以使通道區域上表面54做得更平滑，以 增加金屬氧化物半導體場效應電晶體（M〇sfe丁）5〇之電子 遷移率。 圖3說明介於閘極58與通道區域上表面54之間的閘極介 電膜56。閘極介電膜56相對於二氧化矽，具有高介電常數 ，且含有一選自由鍅（Zr)與銓（Hf)組成之族群的金屬，以 及氧。閘極介電膜56含有摻雜金屬。摻雜金屬以鋁（A1)、 銳（Sc)、鑭（La)，或釔（Y)等三價金屬較佳，或者是二價金 屬，如鈣（Ca)或鏍（Sr)。摻雜金屬之百分比，在膜％中範 圍約為0至50%。膜56中的鋁（A1)百分比以約25%較佳。閘 極介電膜56具有範圍約為2〇至2〇〇埃之厚度6〇 (圖3)。閘極 介電膜56具有範圍約為10至25之介電常數。 訂 在大部分互補金屬氧化物半導體（CM〇s)裝置應用的閘 極介電質情況中，晶圓使用任何技術狀態之傳統方法處理 ，如隔離，繼而形成P型井與N型井以曝光通道區域。一 極薄層之氧化位障仍然是有需要的。在此情況下，可能的 位P平包括氮化矽與氮氧化矽。其次是沈積高1^介電質。 許多製備此膜的方法： A·在惰性亂體或氧化環境中，鍅（Zr)與摻雜金屬之丑 濺鍍； / j .B.在惰性氣體或氧化環境中，共同藏鑛合成目標，諸 锆鋁（Zi-Al); 12- x 297^57 本紙張尺度適_國國冢標準(CNS) △4規;^^ 519760
C.錯銘氧化物（Zr_A1-〇)或铪鋁氧化物（Hf_A1-〇)之化學 氣相沈積；.或者是 D ·蒸發。 緊接於沈積之後，在升高的溫度（攝氏4〇〇至9〇〇度）下， 此膜於惰性氣體（如氬氣、氮氣、氫氣），以及/或是在氧化 (^氧乳、水、氧化亞氮、氧化氮，與無氣體（真空））環境氣 壓中，調節高k膜與高k/矽晶介面。可是，如果此膜是由 瘵發沈積而成，退火熱處理過程通常含有氧氣，以將氧元 素包含於合金膜。 緊接於退火熱處理之後，沈積閘極並圖案化成閘極堆疊 。閘極材料可以是金屬或是多晶石夕。然後，使用任何技術 狀態之裝置製造過程，以傳統方法完成裝置，或者是以閘 極置換方法，而.使用氮化物、多晶矽，或多矽鍺㈣仿 閘。 圖4是一流程圖，說明形成本發明摻雜金屬氧化物膜之 化學氣相沈積（CVD)方法的步驟。步驟1〇〇提供一具有表 面之積體電路（1C)。·步驟102製備至少—種母體，其中含 有一選自由锆（ΖΓ)與姶（Hf)組成之族群的金屬，以;^摻雜 金屬。步驟102含有摻雜金屬。此一摻雜金屬以鋁（A1)、 銃（Sc)、鑭（La)，或釔（Y)等三價金屬較佳，或者是二價金 屬，如mCa)或錄（Sr)。在本發明的一些態樣中，步驟、ι〇2 包含第-種母體與第二種母體’纟中第—種母體含有一選 自由錯（ZO與給（Hf)組成之族群的金屬，而第二種母體列 含有摻雜金屬。步驟104蒸發至少一種母體。步驟1〇6建立
裝 訂 -13-
519760 A7 ______ B7 五、發明説明（14~)~" 複或變化次序以產生所需之介電材料。一般來說，重複的 要求是因為與原子層化學氣相沈積（ALCVD)有關之單層沈 積。在原子層化學氣相沈積（ALcVD)之技術中，即使是後 來的層使用相同的母體，各個母體以介於連續層間棑出較 佳，此已為吾人所熟知。母體應宜以充分之材料作脈衝激 發’以便於積體電路（Ic)表面產生材料之單層。 步驟160緊接於沈積之後，對介電材料做退火熱處理， 最後再用其下面之材料調節介電材料與介面。 步驟1 62係關於最後之高介電常數膜。 步驟152與156在本發明之另一具體實施例中，雖然以截 然不同的步驟顯現，該二母體可同時引進。 圖6是一流程圖，說明形成摻雜金屬氧化物膜之蒸發方 法的步驟。步驟.200提供一具有矽晶表面之積體電路（IC) 。步驟202製備至少一種坩堝，其中含有選自由錯（z幻與 給（Hf)組成之族群的金屬，以及摻雜金屬。摻雜金屬以銘 (A1)、銃（Sc)、彌（La)，或釔（γ)等三價金屬較佳，或者是 一 4貝金屬，如i弓（Ca)或錄（Sr)。步驟2〇4建立一真空（無氣 體）氣壓。步驟206加熱至少一個坩堝至約攝氏1〇〇〇至2〇〇〇 度範圍之掛禍溫度’以蒸發於步驟2 〇 2中製備之金屬。因 應於步驟2 02至2 06’步驟208沈積一合金膜，此膜含有選 自由錯（Zr)與铪（Hf)組成之族群的金屬，以及摻雜金屬。 步驟210於約攝氏400至800度範圍，在含有氧之氣壓中做 退火熱處理，以形成含氧金屬膜，屿膜含有選自由錯（Zr) 與給（H f)組成之族群的金屬、推雜金屬，以及氧。步驟 -17- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐） 一 "'~

Claims (1)

  1. 519760 A B c D 第090116500號專利申請案 中文申請專利範圍修正本(91年1〇月) 六、申請專利範圍 1 · 一種具有高介電常數之薄膜，係關於二氧化矽，其中包 括： a) —摻雜金屬； b) 一選自由銼（Zr)與铪（Hf)組成之族群的金屬；以及 c) 氧，藉以形成高介電膜。 2·如申請專利範圍第1項之薄膜，其中摻雜金屬為三價金 屬’選自由链（A1)、銃（Sc)、鑭（La)，與釔（Y)組成之族 群0 3 ·如申請專利範圍第1項之薄膜，其中摻雜金屬為二價金 屬’選自由鈣（Ca)或鏍（sr)組成之族群。 4 ·如申明專利範圍第1項之薄膜，其中該薄膜具有範圍約 為20與200埃之厚度。 5·如申請專利範圍第丨項之薄膜，其中該薄膜具有範圍約 為10至25之介電常數。 申w專利範圍第1項之薄膜，其中該膜掺雜金屬之百 分比不超過約50%。 7·如申π專利範圍第6項之薄膜，其中該膜摻雜金屬之百 分比約為25%。 8·—種金屬氧化物半導體場效應電晶，包括： a) —閘極電極； )八有上表面之通道區域，該上表面位於閘極電極 下面；以及 幻介於該閘極電極與通道區域上表面之間的閘極介 電膜’其相對於二氧化矽，具有高介電常數，並含有一 本紙張尺度適财目目家標準 選自由錯（Zr)與給（Hf)組成之族群的金屬，與含有氧， 另外尚含有一摻雜金屬。 9·如申請專利範圍第8項之電晶體，其中該摻雜金屬包含 選自由銘（A1)、銳（Sc)、鑭（La)，與釔（Y)組成之族群 的三價金屬。 10·如申请專利範圍第8項之電晶體，其中該摻雜金屬包含 一選自由鈣（Ca)或鳃（Sr)組成之族群的二價金屬。 11 ·如申哨專利範圍第8項之電晶體，其中該膜摻雜金屬之 百分比約為〇至50%之範圍。 12·如申請專利範圍第u項之電晶體，其中該膜摻雜金屬之 百分比約為25%。 13·如申請專利範圍第8項之電晶體，#中該閘極介電膜具 有範圍約為20與200埃之厚度。 、/、 14·如申請專利範圍第8項之電晶體，纟中該閘極介電膜呈 有範圍約為10至25之介電常數。 、/、 !5·如^請專利範圍第8項之電晶體，尚包括一介於該介面 位障與閘極介電膜之間，具有範圍約為2至5埃厚度之介 面位障，該介面位障含有選自氮切與氮氧切=二 族群的㈣，藉以使該通道區域之上表面較平滑，, 加金屬氧化物半導體場效應電晶體（m〇sfe丁）之電^ 移率。 j 造中於積體電路表 ，包括下列步驟： 1 6.種在具有表面之積體電路（Ic)的製 面上形成一摻雜金屬氧化物膜之方法 a)建立一含氧之非晶系； b) 在積體電路（1C)之矽晶表面濺鍍至少一目標金屬 "‘金屬選自含有錯（Zr)與铪（Hf)之族群，以及含 有一摻雜金屬； c) 因應步驟a)與b)，形成摻雜金屬氧化物膜；以及 、）於力攝氏4〇〇至9〇〇度範圍做退火熱處理，藉以形 成具有高介電常數與良好位障性質之薄膜。 申叫專利範圍第16項之方法，其中該積體電路⑼)表 面保持約為室溫與攝氏400度之間的溫度範圍。 以·”請專利範圍第16項之方法，其中步驟包含含有氬 氣（Ar)之氣壓，其中氧對氬的比例約為5至2 $ %，而壓 力範圍約為1至10毫托（mT〇n〇。 19·如申請專利範圍第16項之方法，其中步驟包含建立一 氣壓，該氣壓含有選自由氬氣（Ar)、氮氣（Nj、氫氣 (h2)、氧氣（02)、水（h2〇)、一氧化二氮（N2〇，笑氣）、 一氧化氮（NO)、無氣體，以及氧等離子體所組成之成 分。 20·如申請專利範圍第16項之方法，其中該摻雜金屬為一選 自由鋁（A1)、銃（Sc)、鑭（La)，與釔（γ)組成之族群的三 價金屬。 21·如申請專利範圍第16項之方法，其中該摻雜金屬為一選 自由鈣（Ca)或鏍（Sr)組成之族群的二價金屬。 22.如申請專利範圍第16項之方法，其中步驟b)包括個別目 標之共同濺鍍，包括選自由錯（Zr)與姶組成之族群 的第一種目標金屬，以及含有三價金屬之第二種目標。 519760
    23·如申凊專利範圍第16項之方法，其中步驟b)包括個別目 私之共同濺鍍，包括選自由锆與铪（Hf)組成之族群 的第一種目標金屬，以及含有二價金屬之第二種目標。 24·種在具有表面之積體電路（ic)的製造中形成摻雜金屬 氧化物膜之方法，包括下列步驟： a) 製備至少一母體，其中含有選自由鍅（Zr)與铪（Hf) 組成之族群的金屬，以及摻雜金屬； b) 蒸發至少一母體； c) 建立一含氧之氣壓； d) 藉由化學氣相沈積（cvd),在積體電路（1C)表面上 分解該母體以沈積成一合金膜，此膜含有選自由錯（Zr) 與铪（Hf)組成之族群的金屬，摻雜金屬，與氧；以及 e) 於約攝氏400至900度範圍做退火熱處理，藉以形 成具有1¾介電常數與良好位障性質之薄膜。 25·如申請專利範圍第24項之方法，於步驟〇之前，尚包括 建立一積體電路（1C)表面溫度，其範圍約為攝氏3〇〇與 500度之間。 26·如申請專利範圍第24項之方法，其中步驟c)包含含有氬 氣（Ar)之氣壓，其中氧對氬的比例約為5至25〇/()，而其 中壓力範圍約為1至10托（Τοη〇。 27·如申請專利範圍第24項之方法，其中步驟e)包含建立一 氣壓，該氣壓含有選自由氬氣（Ar)、氮氣（NO、氫氣 (Η2)、氧氣（02)、水（Η20)、一氧化二氮（wo，笑氣）、 一氧化氮（NO)、無氣體，以及氧等離子體所組成之成 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐)— -：----- 519760 A8 B8 C8 D8 、申請專利範圍 分。 28.如申請專利範圍第24項之方法，其中該摻雜金屬為一選 自由鋁（A1)、銃（Sc)、鑭（La)，與釔（Y)組成之族群的三 價金屬。 29·如申請專利範圍第24項之方法，其中摻雜金屬為一選自 由鈣（Ca)或勰（Sr)組成之族群的二價金屬。 30.—種在具有表面之積體電路（1C)的製造中形成摻雜金屬 氧化物膜之方法，包括下列步驟： a) 製備第一母體，其中含有選自由锆（Ζι*)與铪（Hf)組 成之族群的金屬； b) 蒸發第一母體，並使積體電路（1C)表面曝露於該 母體中，藉以將金屬之一層，以單層較佳，以化學之方 法吸附到表面，利用原子層化學氣相沈積（ALCVD)沈積 金屬層； c) 製備氧元素母體； d) 蒸發氧元素母體，並使積體電路（1C)表面曝露於 該氧元素母體中，藉以將氧元素之一層，以化學之方法 吸附到表面，利用原子層化學氣相沈積（ALCVD)沈積氧 元素層； e) 製備一含有摻雜金屬之摻雜金屬母體； f) 蒸發摻雜金屬母體，並使積體電路（1C)表面曝露 於該摻雜金屬母體中，藉以將摻雜金屬之一層，以化學 之方法吸附到表面，利用原子層化學氣相沈積（ALCVD) 沈積摻雜金屬層；以及 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐）
    裝 線
    519760 申請專利範園 g)於約攝氏300至900度範圍做退 沈積層，藉以形成具有高介 …、处理以調節 薄膜。 ^數與良好位障性質之 31·如申請專利範圍第3〇項之方法， 七 ^ ^ 尚包括於處理期問，淨 立一積體電路（1C)表面溫度， 』間，建 度之間。 X其耗圍約為攝氏1〇〇與700 32. 如申請專利範圍第3〇項之方法 如,ΛΙ、. 八穆雜金屬為一撰 自由鋁（A1)、銃（Sc)、鋼（La)， 、 價金屬β Ά⑺組成之族群的三 33. 如申請專利範圍第3〇項之方法，其中推雜金屬為 由_(Ca)或銷（Sr)組成之族群的二價金屬。 34. 如申請專利範圍第3〇項之方法，其中第—母體是氣化錯 (ZrCl4) 〇 35·如申請專利範圍第3〇項之方法，其中氧母體是水（仏〇)。 36.如申請專利範圍第3〇項之方法，其中摻雜金屬母體選自 由氯化鋁（A1Cl3)、三甲基鋁（A1(CH3)3)，與三（乙醯丙酮 基）铭（Al(acac)3)組成之族群。 3 7·—種在具有表面之積體電路（IC)的製造中形成摻雜金屬 氧化物膜之方法，包括下列步驟： a) 製備至少一坩堝，其中含有選自由鍅（Zr)與铪（Hf) 組成之族群的金屬，以及摻雜金屬； b) 建立一真空氣壓； 之 c) 加熱至少一個坩堝至約攝氏1000至2000度範圍 掛禍溫度，以蒸發於步驟a)中製備之金屬； -6- 本紙國家標準(CNS)^格(咖Χ 297石 J^76〇 A8 B8
    d) 因應於步驟a)至c)，沈積一合金膜，此膜含有選 自由锆（Zr)與铪（Hf)組成之族群的金屬，以及摻雜金屬 :以及 e) 於約攝氏400至900度範圍，在含氧氣壓中做退火 熱處理，以形成含氧金屬膜，此膜含有選自由錯（2；〇與 铪（Hf)組成之族群的金屬、摻雜金屬，以及氧，藉以形 成具有高介電常數與良好位障性質之薄膜。 38·如申請專利範圍第37項之方法，其中步驟a)包含第一坩 堝與第二坩堝，該第一坩堝供選自由錯（Zr)與铪（Hf) 組成之族群的金屬之用，第二坩堝則供摻雜金屬之用 ,而且其中步驟c)包含加熱第一坩堝至約攝氏ι〇⑻至 2000度之範圍，以及加熱第二坩堝約攝氏1〇〇〇至2〇⑻度 之範圍。 39.如申請專利範圍第38項之方法，其中該摻雜金屬為一選 自由鋁（A1)、銃（Sc)、鑭（La)，與釔（γ)組成之族群的三 價金屬。 40·如申請專利範圍第38項之方法，其中摻雜金屬為一選自 由鈣（Ca)或鏍（Sr)組成之族群的二價金屬。 41·如申請專利範圍第37項之方法，其中步驟匀包含建立一 氣壓，其中含有選自由氬氣（Ar)、氮氣（仏）、氫氣汩2) 、氧氣（〇2)、水（Η20)、一氧化二氮π"，笑氣）、一氧 化氮（NO)、無氣體，以及氧等離子體所組成之成分。 裝 訂 線
    519760 第090116500號專利申請案 中文圖式修正頁(91年10月） 瓦條 年月曰i
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