TW200805492A - Low-temperature dielectric formation for devices with strained germanium-containing channels - Google Patents

Low-temperature dielectric formation for devices with strained germanium-containing channels Download PDF

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TW200805492A
TW200805492A TW096110743A TW96110743A TW200805492A TW 200805492 A TW200805492 A TW 200805492A TW 096110743 A TW096110743 A TW 096110743A TW 96110743 A TW96110743 A TW 96110743A TW 200805492 A TW200805492 A TW 200805492A
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layer
substrate
strained
forming
semiconductor device
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TW096110743A
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TWI377619B (en
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Gerrit J Leusink
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Tokyo Electron Ltd
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Description

200805492 九、發明說明: 【發明所屬之技術領域】 本發明矽關於半導體處理及包含含Si介電層覆蓋在含鐵錄 通道上的半導體裝置。 .滅 【先前技術】 ^半導體裝置中,受應變鍺(S-Ge)層、受應變矽(s、Si)層、 及=應變矽鍺(s-SiGe)層是未來十分被看好的電晶體通道材料。 像是金屬氧化物半導體場效電晶體(MOSFET)的裝置和使用羽 知的(沒有應變)基板所製造的裝置比起來,已經經 给展 增進的裝置性能。可能雜能改善不但包括裝置驅動電^: =電^肖耗,也包括不用犧牲電路速度職增 杯!絲’歷層的形成是當這闕在結晶制形成的基 ΐΐ時’應變被引發的結果,結晶材料的晶格常數大於咬是
Ts^!#t〇G^ Si 的。在-°抓由f的晶格常數和它的Ge濃度是線性相關 π &日# ^中,匕S 5〇% Ge原子的SiGe合金的晶格常數大約比 Si的晶格常數大⑽倍。 甲数人、、0比 +搞中’覆1在通道上的材料為—閘介電材料,且-閘 作為閘介電層,歧結合 以:層右rsi介電層相比以 ^丨电材科具有惡劣的介面特性 ^^ 下、通道材料之上會插人極_氧化含Sl面="。"⑨材抖之 層化的沿層達到_的電特二行的含Si介電 目前,需要的形成方法通ff要高溫氧化製程。 心上的基板,例如靴或更高溫的基板。此高 200805492 ^ 土板會造成的缺陷,歸因於在含應變(:^通道材料(例如^^和 iGe)中,至少部分應變鬆弛、及/或含應變Ge層的部分氧化。 ^進-步,既然極薄的氧化si層可以只有幾層單—層厚,在習知 :在氧化si層之下的含應變咖 【發明内容】 * 土,Ϊ班本發明的一個實施態樣是為了最小化有關含應變Ge的 方法或衣置的上述任何一個及/或其他問題。 ρΪ發—個目岐提供德介電職餘,可喊少在含 ^知^漿損的害乳化及應變鬆弛’且不具有對於底下的應變仏層 来二?ϋ ΐ他的目的可讀林發_實施_達成,為了 的,(例如Si〇2、賴、或是SiN介電層),本發明 應變Ge機贼置職溫電»程。含 70(TcG板、^丨^⑽。電漿製程使用軟電漿及溫度低於 因此’根據本發明的一實施例,此 應變 層上的-含Sl介電層,其中,含Si介=曰層:形田成在含應變Ge 變〇e層上的Si層於基板峨於冒c = 成在= 6 200805492 夠取小化底下含應變Ge層中的氧庫 以,含在含Si介電層上的一閉電極層T半導體裝置可 一咼k層及在高k層上的一閘電極層:一疋3 Sl介電層上的 【實施方式】 本發明之實施例提供具有極薄含士 .材料上的高性能裝置的形成方法。舉例而^層^;成f含應變Ge 層。根據本發明之一實施例,含 ^ 2 乂作為面際 .是SiN,或是:M:组人。 电曰了匕括Si〇2、SiON、或
根據本發明之—音始也丨,1 A
含應變Ge層的半導體壯到圖1以既略地顯示形成具有 中,其技^ =體衣置的處理步驟的裝置橫剖面圖。圖1A #更大的基板。在一例中,基板可以是》型Si基 板m㈣之一實施例,基板1〇〇可以包含siGe緩衝層。土 声可^ G示ίίΐ100之上形成含應變㈣1〇2。含應變^ f xme層或是一秘〜層,其中χ是沿原子的部分,而 全,盆中部分。此處所說的「脱」指的就是秘〜合 Q: /、 α1 = 1βΧ<1。例示性的 SixGei_x合金包括 SiaiGea9、 i〇.2^e〇.8 ^ la3Ge〇j . si0>4Ge0.6 > Si〇.5Ge〇.5 > Si〇.6Ge〇.4 ^ Si〇.7Ge〇.3 ^ - =Μ、及Sl〇9Ge〇i。含應變&層搬能夠具有,例如,在大 、、勺大約2〇Ilm之間的厚度’或是在大約5nm及大約10ran 之I、旱度。在一例中,含應變〇6層102可以為一壓縮應變的
Ge k,或為沉積在鬆弛的SiQ5Ge⑽緩衝層上的一伸展應變的 SixGei_x (χ>〇·5)層。 圖1C顯示形成在基板1〇〇上的含應變(^層1〇2之上的別 層104 Si層1〇4能夠’例如,具有在大約Q 3nm及大約2nm之 7 200805492 間的厚度’或是在大約〇.5nm及大約1·之間的严声 的,,或是沉積步驟的條件,_ 取決於Si 形、或疋非晶形。根據本發明 、、口日日乂、多晶 展應變的Si層〇 .林月之貝關,Sl層104可以為-伸 的基板100的溫度低於wc時,暴露圖lc中 暴露可輯如^55之介電層1G4a。軟電漿 系統加以實施i線電漿源的電襞處理 ㈣,△十Lr處可使用具有低電子能量、及高密声的 氧^中之含Si介電層1G4a,而且實際上; ;322的含應變&層1G2°已經考慮過介電形成‘ 考ίίΐΐ個Si層104的垂直厚度的情況,但是ϋ 、有乳化或是氮化&層1G4的部分垂直厚度的情況。= 组成技勢者當可輕易了解’含si介電層购中的元i 太細杰=w自始至終一致,但能用垂直的組成剖面圖來代秩美 t之1二®: H電層1<)4a可以具有在大_邮及大約2 拍祕^子度,或疋在大約a5nm及大約lnm之間的厚度。 =本發明之一實施例,含沿介電層廟&可以為一含有沿 ^ ^化物層、一含有沿、〇、N的氮氧化物層,或是含有犯 ^為- ίΐΐί ο根據本發明之一實施例,含^介電層馳可 以為-乳化物層,例如叫層,其中χ^2。在一例中 & ^▲。·^^。根據本發明另—實胁卜含別介電層10^ 八命^一 Sl〇x層,其中1<x<2。根據本發明另一實施例,含Si ;1.電層1〇4a可以為一氮氧化物層,例如SiOxNy層。在一例中, S^OxNy層可以包括0<⑸及〇<yg〇 25。根據本發明更另一實 2例。含&介電層l〇4a可以為一 SixNy層。啊層的組成可以包 x= ’及y$4 ’舉例而言,完全被氮化的一 SbN4層。簡言之, 電層KHa可以包含Si〇x、聊外、或叫介電層,或是 ”、、、。&。此處所使用的介電層會各自被指明為是別〇2、si〇N、或 8 200805492 是SiN介電層。 在裝置中,介於Si〇2、Si〇N、或是_八+ 口傅、、先上看來402介電層具有比Si /生舉例而 糾咖和SlN介電層比起Si〇2介電層,之電特性, 壁,並具有較高之介電常數,藉此,在減好之擴散障 的代價之下,能增加閘堆疊的整體介電中的電子移動率 根據本發明之一實施例,圖2A和 變仏層的半導體裝置的橫剖面圖。在圖2=圖=不f有含應 面ίΓ未顯示M〇SFET20、30的源極和没極圖2=的= Si)丨電層l〇4a上含有閘電極層廳、及氧化物° =在3
20橫剖面圖。 祕物二隙110的MOSFET 雷顯示腦财3G的橫剖面圖,聰FET 3G在含Si介 十二馬^之上具有^介電層1〇8、在高k介電層108上呈有閘 、及氧化物空隙11Q。高k介電層⑽可以,例如1 3至屬乳化物或是金屬石夕化物,包括τ%〇5、Ή〇2、、、 Y2〇3、HfSi〇x、Hf02、Zr〇2、ZrSiOx、TaSi〇x、Sr〇x、SrSi〇x、La〇3、
LaSi〇x、Y〇x、YSi〇x、或是其中二者或更多之組合。高k介電x層 108的厚度可以,例如,介於大約2nm到大約2〇nm之間, 可以是大約4nm。 又 閘電極層106可以,例如大約是1〇 nm厚,且可以包含聚合 Si、金屬、或是含金屬材料,包括w、WN、wSix、A卜Mo、Ta"、
TaN、TaSiN、HfN、HfSiN、Ή、TiN、TiSiN、Mo、MoN、Re、
Pt或是Ru 〇 圖3為根據本發明之一實施例,形成具有含應變〇6層的半導 體裝置製程流程圖。參照圖1及圖3,製程300包括:在步驟302 中’在真空處理工具中設置基板1〇〇。根據本發明之一實施例,真 空處理工具可以是圖4所示之真空處理工具400。 步驟304中,在基板1〇〇上沉積含應變Ge層1〇2。含應變 9 200805492
Ge層102可以,例如,藉由使用反應氣體混和物的化學氣相沉積 (CVD)法來形成。反應氣體混和物包含含si氣體,例如甲石夕燒 (SiH4 )、乙矽烷(Si2H6 )、二氯矽烷(SiCl2H2 )、六氯矽烷(Si2Cl6)、 及含鍺氣體,例如四氫化鍺(GeH4)。應變&層1〇2可以,例如, 在基板溫度低於7〇〇t:之下,使用包含GeH4的反應氣體來進行 CVD法而形成。或是,含應變Ge層102可以用物理氣相沉積 (PVD)法來形成。 在步驟306中,.在含應變&層102之上形成一別層1〇4。& 層104可以,例如,在基板溫度低於70〇。(:之下,藉由使用含有石夕 的,體,例如卿、_6,〇此、或是8沿6的反應氣體的CVD 法來形成。 含f變Ge層102及Si層1〇4能夠,例如,沉積在處理大約 m抑口,更乂基板(晶圓)的批次處理系統中。或是,可以利用一 其5二Γ處理系統。基板可以是任何尺寸’例如,可以是200麵 ί i 基板、或是更大的基板。沉積含應變&層撤及 口 <理條件可以包含處理室的氣壓要少於大約100Torr。 ,在一批次處理系統中,處理室氣壓可以少於大約1 李續中::約0.3Torr。只為了更進一步舉例,在單一晶圓處理 並桿題A H 號’代理銳第哪德號, 為參考。圖3潯版」,其全部内容在此合併作 "T Cj 3的貝施例頒不含應變Ge声 h ^ 〇. ^ ^ _ 但本發明巾財需要真正軸這些層二:'、”層的形成’ 層,可以減少這些層;刖先在真空處理工具中形成這些 根據本發明之另一實施例, 含應變Ge私基板上的基板 理工具中設置包含 絲層於軟錢巾,以形成含Si 上形絲層;及暴 ;丨电層。在—例中,藉由把基板 200805492 工具所形成的在含應‘變Ge層上的任何含 =乳,物’可以在含應變Ge層上形成S1層之前,在直工 柯I’ti—例中,既然含&氧化物在適當溫度ΐΐ以是揮 i實丄,Ge層的含Ge氧化物部分的移除係藉由退火製程 根據本發明更另一實施例,可於真空處 f扣層於基板上,且在含應變Ge層^有心m含t ,電漿前,移除任何藉由把基板從空氣運送到直卜空於 成的Si層上的原有氧化物。在一例中,蕤卜與$二而形 (COR)製程,實施原有氧化物的 曰=匕=除 之引:略軸在Sl層上的任何原有氧化物層的移除。 含Ge薄^的景部分,f知的賴氧化製程會損害底下的 密度’或是需要很長的暴露時 ^,e)、=水 一=恭路於㈣、度(低Te)電漿1〇 者為 l 2以提# Si層氧化及/或是氮化 低 含有狹辭自域賴關精由 5所示之電聚處理系統,係以可才在以^ ’如圖5。圖 低電子溫度、及介於大約1χΐΓ)1()/—在大为0.5eV到大約6eV的 公分之間的高電_3料,^方,到大約5xlQl2/每立方 含應變&層102上^際上可造成覆蓋在 更進一步,氧化製程可以避免化物及/或氮化物。 氧化及應變鬆弛。 减》底下含應變Ge層102中的 根據本發明之一實施例,Si層谢被氧化,以從包含〇2、或 200805492 ,〇 ’及惰性氣體,例如Ar、Kr、He、或是Xe的電漿活化處理 氣胜形成氧化層。〇2、或H2〇氣體的流動速度在sccm到5⑻ seem之間,而惰性氣體的流動速度在5〇〇 sccm到2⑻〇 sccm之間。 處理室中的氣壓介於20 mTorr到2000 mTorr之間。基板的溫度可 以維持在低於700。(:,或是介於大約2〇〇。(:到大約500°C。在一例 中,基板的溫度維持在大約500。〇。 根據本發明之另一實施例,Si層1〇4被氧化,以從包含n2、 〇2的電漿活化處理氣體形成氮氧化物層,並選擇性的包含惰性氣 體’例如Ar、Kr、He、或是Xe。n2、〇2的氣體流動速度介於1〇 sccm及50〇sccm之間,且惰性氣體的流動速度介M5()〇sccm& 2000 sccm之間。處理室中的氣壓可以介於2〇到2〇〇〇汀 之間基板的/^度可以維持在低於7⑻。c,例如,在大約2〇〇。(^ 2 WC,。在-例中,基板的溫度維“ 本,明之另一貫施例,處理氣體可以包含N〇、n〇2、或是N2〇, 或疋其組合,以及選擇性的惰性氣體。 根據本發明又另一實施例,沿層1〇4被氮化,以從包含 及選擇性的惰性氣體,例如ΑΓ、&、He、或是Xe的電漿 ^匕處理氣體形成氮化物層。%氣體的流動速度介於1() _到 „SCCt之間,惰性氣體的流動速度介於500 sccm到2000 sccm 以壓介於2〇 ·到2〇00阶〇订之間。基板的溫 t=c2〇〇°C到大約之間。在—例中,基板的溫度維^ 更另Γ實施例,别層104被氧化及氮化,以在連 氧化物層。舉例而言,在Si〇2層暴露於包 令〇㈣將H i本發之另一實施例,在SiN層暴露於包 處理2氣^水杰ςΊ^里虱體之前’首先可以從包含〇2的電聚活化 处既肢开。這兩個步驟可以在同樣的處理系統中實施, 200805492 以減少基板的污染,並增力口吝·曰 的處理系統中實施,每個3這兩個步驟也可以在不同 個。上述用來形成氧化芦Lf、、先各貫施兩個步驟中的其中一 步驟處理,以形成氮^層聽層的處理條件可以被用來實施二 置的,概略地顯示用來形成半導體裝 處理系統430到460真^=ί I00包含基減入室楊、撒、 、 自動轉換糸統470、及控制器480。 .:·至、420是用來轉換基板到真空處理工呈400之 • 中,以便處理,並在處理之後把美 j;老工处里工具4ϋϋ之 真空處理工具正常來4t出真空處理工具4〇〇。既然 是絲二下二基板^室·、 基板載入室·、鮮^自的絲。如目4所示, 2 ”载室410、420和處理系統430到460之門的 ΐίο/τ ^系,統,能夠,例如,在真空條件之下(例3 約1〇fmT〇订或更少)被惰性氣體(例如Ar)清洗。 大 處理系統430可以用來抽氣及/或先 =置於姆社㈣0基板 .抽氣可以,例如,在有惰性氣體(例如Ar) 力到介於靴到·。c之間的溫度來實施。預, 電聚清潔’以從基板的表面移除任购^ 處理系統440可以用來在基板上以CVD法、pv 積法ULD)沉積含應變⑽(例如:或是 更進-步,處理系統可以在沉積含應變分層之前其=)。 沉積SiGe緩衝層。SiGe、緩衝層可以是厚的鬆他的siGe > j上 糸統450可以用來在含應變Ge層上形成別層。,曰,理 440可以用來沉積含應變Ge層及&層。處理系统 ^里,統 &層於軟電漿中’形成含Si介電層。根據本發g月之一露 理系統460可以是包含狹缝平面天線的電襞處理系統,如I歹1 ’處 … 圃5 〇或 13 200805492 疋’絶理糸統460可以是任何能夠形成具有低電子溫度的軟電漿 的電衆處理系,。儘管未顯示於圖中,真空處理工具彻也可以 包含基板對,純、朗來冷卻處理過的基_冷卻系統。 在處ί里系統43〇中的抽氣及/或預先清潔之後,以自動轉換系 統運送基板到處理系統44〇,以沉積含應變&層。接下來’,、 以^動轉換系統47〇運送基板到處理系、统45〇,以在含應變⑶層 上沉積Si層。接著,以自動轉換系統47〇運送基板到處理系統 46〇,以暴露Si層於軟電漿中,因此,真空處理工具4⑽容許在 ^3〇M〇8時,及實施步驟3〇2一3〇8之間,不用暴露於空氣中 就成f圖3的處理步驟3G2-3G8。如此可形成在不同層之間的介 面具有良好控制的乾淨材料層。儘管未顯示於圖中,真空處理工 ill可以包含或疋真空連結額外的處理系統,以在步驟308的 琶水地理之後’更進-步處理基板。例如,—或更多個處 可以用來沉制電極層及高k層。 w $處理工具400可以藉由控制器48〇來控制。控制器48〇 =麵a於基板載入室410、420、處理系統43〇到、及自動 ΪΤ4〇Γ 480 /、400中的基板轉換、及在處理系統43〇到46〇中實施的基板 中iSLIf例中丄控制器480 ·藉著儲存於控制器記 、目♦ t式絲式化’叫施本剌實關的處理、及任何有 电路、私式化的普通用途電腦,例如
TeXas 所得之 DELL 舰⑶職 w〇rkstati〇n n,us ιη, 的例’圖5概略地顯示包含狹縫平面天線 ίί ^暴露具有含應變Ge層待難置中的別層 jit ]根據本發明之—實施例,電E處理系統·中所製 ^的电水低電子溫度及高賴密度树徵,電子溫产^容 ί 大約6巧大約〇.5 eV之間,例如大約1.5 Γν ;高 电水'山、度,例如在1x10 /每立方公分到5χ1〇12/每立方公分之間, 14 200805492 i ΐίίΐΐίΐΐ 層上的Si層的沒有損傷的氧化 喷,例’藉由電聚處理系統500所產生的電 皿度在大約G.5 ev到大約2 ev之間,且電聚资 度在大約1x10 /母立方公分心xlQl2/每立方公分之間 二 糸統500可以,例如,是從丁〇k E1 t 水处 商業上獲 triAS™spaJ 紐。Umited’Akasaka,^ 電漿處理系統500包含處理t 550,在處理室55〇上部比 的開σ部分551。設置—®柱狀上板554,係由石英、 銘氯化物,以覆蓋開口部分551。氣體管 、-泉572位於上板554之下的處理室55〇上部的側壁。 ,體管線572的編號可| 16(只有其中兩個顯示於圖5中)。或 572也可以使用不同的編號。氣體管線572可以排= =理室55G周圍’但本發明的實施例中並不需要。可以從氣體管 ^572均勻-致地供應處理氣體進人處理室別中的電裝區域 在電漿處理系統500中,經由具有複數個狹縫56〇A的平面天 線構件560,穿過上板554 ’可設置微波動力於處理室5s〇。狹缝 =面天線560可以由金屬板製造,例如銅。為了供紐波動力到 狹缝平面天線560,散佈波導563於上板554之上,波導563連结 於微波動力供應器561 ’以產生例如具有2 45GHz頻率的微波f 舉例而言,微波動力輸出可以在500W到2000W之間。波導563 包含具有下端連結於狹缝平面天線560的平坦環形波導563A、及 連結於環形波導563A的上表面側的環形(同軸)波導563B、及 連結於環形(同轴)波導563B的上表面侧的同軸波導轉換哭 的出口㈤的底面)。更進-步,長方形波導 波導轉換器563C的入口(圖5的侧面)、及微波動力供應器561。 …在波導563B之中,同軸地設置電導材料的軸部562 (或内部 導體),以使軸部562的一端連結於狹缝平面天線56〇的上表面的 中心(或是幾乎中心)部,而軸部562的另一端連結於環形波導 15 200805492 563B的上表面’藉此形成同輛 1作用如同—_波導。微波動力可以^成環形波導 母平方公分到大约4 w/每平方公 合j如,在大約〇·5 W/ 0.5W/每平方公分収约3 w 3八° = ’微_力在大约 此外,在直空虚琿玄士 刀之間。 =-,以支上的基板固 .包含用來加熱基板⑽的加熱器557,力!^5)5°7=固持器552 态。或是,加熱器557可以為燈 哭、、-7可為阻抗性加熱 .加熱器。更進一步,處理室55遠、疋任何其他種類的 幫浦555的排空管線553。 3連、、、。於處理室底部、及真空 器、及數㈣琿的控制 控制電壓,並也監視電漿處理系統500^處出理系=入的 式ϊϋϊΐ二ίί 處理方法,利用儲存於記憶體的程 ^社制則賴賴處理系統·的元件。處: 為基礎的工作站。或是 2二3 = 系統、或是任何此處描述的控制器來作為 卜制器599可以位於電漿處理系統的近端, 於ϋ以猎由網路或是内部網路,位於電漿處理系統的遠端。關 ,狹缝平面天線(SPA)電漿源的錢處理系統之更多額外細 =j露於歐洲專利中請案第EP136祕A1號,其標題為「製造 兔子衣置材料之方法」,其内容於此合併作為參考。 應當了解的是,本發明在實現上仍可有許多修正及不同變 化。因此,在不脫離本發明的發明範圍之内,可以使用未於此描 述的實施方法來完成本發明。 、 16 200805492 【圖式簡單說明】 附圖中: 根據本發明之一^貫施例’圖1A到圖1E概略地顯不形成具有 含應變Ge層的半導體裝置的處理步驟的裝置横剖面圖; 根據本發明之一實施例,圖2A和圖2B概略地顯示具有含應 變Ge層的半導體裝置的橫剖面圖; 根據本發明之一實施例,圖3為形成具有含應變Ge層的半導 ^ 體裝置處理流程圖; ^ 根據本發明之一實施例,圖4概略地顯示形成一半導體裝置 的真空處理工具;及 ® 根據本發明之一實施例,圖5概略地顯示具有狹缝平面天線 的一電漿處理系統,以讓具有含應變Ge層的半導體中的Si層被 暴露於軟電漿中。 元件符號說明:-20 ·· MOSFET 30 : MOSFET 100 :基板 102:含應變Ge層 _ 104: Si 層 104a :含Si介電層 105 :軟電漿 106:閘電極層 108 :高k層 . 110:氧化物空隙 400··真空處理工具 • 基板載入室 420 :基板載入官 430 :處理系統 17 200805492 440 :處理系統 450 :處理系統 460 :處理系統 470 :自動轉換系統 480 :控制器 5⑻··電漿處理系統 550 :處理室 551 :開口部分 , 552 :基板固持器 553 :排空管線 ® 554 :圓柱形上板 555 ··真空幫浦 557 :加熱器 558 :基板 559 :電漿區域 560 :平面天線組件 560A :狹缝
Ml :微波動力供應器 562 ··軸部 • 563A ··環形波導 563B :環形波導 563C :波導轉換器 563D :長方形波導 572 :氣體管線 - 599:控制器

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  1. 200805492 十、申請專利範圍: 1·一種半導體裝置形成方法,包含·· 基板設置步驟,設置一基板於一真空處理工具中,該基板具 有一含應變Ge層於該基板上、及在含應變Ge層上具有二I〗層',· 基板溫度維持步驟,維持該基板的溫度在^於:^ot:; 1曰, 軟電漿產生步驟,在該真空處理工具中,產生一軟電浆;及 si層暴露步驟,當減少在底下的該含應變Ge 及 變鬆弛時,暴露該Si層於該軟電漿中,以形成一人+ 〜 範圍第1項之半轉裝置形成方法,其中;;曰基板 含應變Ge層沉積步驟’在該基板上沉積—含應 声 &層形成步驟,在該含應變Ge層上形成一汾^ , i ’ ΐΪίίί理ΐ具t實施該含應變⑶層沉積步驟^Si層形成 步驟的其中一個,或兩者皆實施。 乂 3曰如申請專利範丨項之半導體裝置 暴露步驟包含: 人'7次具T,忒Si層 形成包含一 Si〇2層、一 Si〇N層、戎县一 C.\T a上 合的-含Si介電層。 層k汹層’或是其結 4^請專纖圍第丨項之半導體裝置 恭露步驟包含: ,、甲’邊Si層 該軟=鼓波照射’從具有複數個狹縫的—狹缝平面蝴^ 5暴=^麵4項之半導體裝置形成方法,其中,該81層 —產生包含電子溫度介於大約05eVa 範圍第4項之半導體裝置形成方法,其中,該⑽ 19 200805492 介於大約a5eV到大約2ev之間、及電聚 每立方公分狀約㈣12/每立方公分之間的 7·如申請專利範m第2項之半導體裝置形成方法, 到大2,12層形成步驟包含:形成具有厚度介於大約。·3ηπι 到大約2nm之間的Si層;且 到大ΐί ’該!1層暴辭驟包♦:形成具有厚度介於大約a3nm R 間的一 Sl02層、別⑽層、或是_層。 •如申岣專利乾圍第2項之半導體裝置形成方法,
    糾士4 Sl層形成步驟包含:形成具有厚度介於大約a5nm 到大約Inm之間的—Si層;且 中’ 4 &層恭露步驟包含:形成具有厚度介於大約a5nm 〇 皿1之間的一 SlC>2層、8趣層、或是SiN層。 異十t清專她圍第1項之半導體裝置形成方法,其巾,該別層 暴露步驟包含: 暴露該Si層於一軟電漿中,該軟電漿係由包含〇2、氏〇、N2、 川、N〇2、或是凡〇 ’或其組合的處理氣體所形成。 10·= 申請專利範圍第i項之半導體裝置形成方法,其中,該別 層恭露步驟包含: 連繽物露該Si層於包含〇2的一第一處理氣體的一軟電漿、 及匕含Ns的一第二處理氣體的一軟電漿中。 ^申請專利翻第〗項之半賴裝成方法,更包含在該含 1 w電層上形成一閘電極層,該閘電極層包含聚合Si、w、_、 WSix、A卜 Mo、Ta、TaN、TaSiN、HfN、HfSiN、Ti、TiN、TiSiN、 Mo、MoN、Re、Pt、或是 ru。 1Z如申料利範圍第丨項之半導體裝置形成方法,更包含: 人在該含Si介電層上形成一高k介電層,其中該高]^介電層包 含 Ta2〇5、Ti02、Zr〇2、Al2〇3、γ2〇3、HfSi〇x、Hf02、Zr02、ZrSiOx、 TaSiOx、SrOx、SrSiOx、LaOx、LaSiOx、YOx、或是 YSiOx、或是 20 200805492 其中兩者或更多的組合,及 在该兩k介電層上形成一閘電極層,其中,該閑電 Ti、TiN、TiSiN、Mo、MoN、Re、Pt、或是 Ru。 H申請專利範圍第1項之半導體裂置形錢法,其中,該Si 層恭路步驟包含只氧化或氮化該Si層的一部分。 14· 一種半導體裝置形成方法,包含: 在一真空處理工具中設置一基板; 在該基板上沉積一含應變Ge層; 在該含應變Ge層上形成一 si層;及 在基板溫度低於700°C之下,暴露該別層於一軟 ,立 =該軟電漿是藉由微波照射,從包含複數個狹^ =電漿源所產生的,包含電子溫度介於 15· —種半導體裝置,包含: 一基板; - 在该基板上之一含應變Ge層;及 在該含應變Ge層之上所形成的—含Si介衫, 。,為在基板溫度低於Wc之下,藉由暴^_3於= 中所形成的,以減少底下的該含應變鍺層中^氧化 ^如申請專利範圍第15項之半導體裝, ί:-:1〇2^_310Ν^^8ιΝ,:^ ^ 〇e, 1 包8含如-申應=^15糾植置,料,辟應變” 21 200805492 I9.如申晴專利範圍帛I5項之半導體裂置,其巾,在該基板上 20·如申請專利範圍第15項之半 伸展應變的Si層。 该含應k Ge層覆盡在一 SiGe緩衝層上。 導體裂置,其中,該Si層包含一 21·如申請專利範圍第15項之半導體袭置, 其中,該Si層具有之厚度介於大約〇 3nm到大約2麵之間; 及 其中,該含Si介電層具有之厚度介於大約0 3nm到大 之間。
    22·如申請專利範圍第15項之半導體裝置, 其中π亥Si層具有之厚度介於大約〇 到大約之間; 其中,該含Si介f層具有之厚度介於大約〇 5nm到大約lnm 之間。 23. 如申請專利範圍第15項之半導體裝置,更包含: 在該南k介電層上之一閘電極層,其中,該閘電極層包含聚 合 Si、W、WN、WSix、Al、Mo、Ta、TaN、TaSiN、HJEN、HfSiN、 Ti、TiN、TiSiN、Mo、MoN、Re、Pt、或是 Ru。 24. 如申請專利範圍第15項之半導體裝置,更包含: 在該含Si介電層上之一高k介電層,其中,該高k介電層包 含 Ta205、Ti02、Zr02、Al2〇3、Y2〇3、HfSi〇x、Hf02、Zr02、ZrSiOx、 TaSiOx、SrOx、SrSiOx、LaOx、LaSiOx、YOx、或是 YSiOx、或是 其中兩者或更多的組合;及 在該高k介電層上之一閘電極層,其中,該閘電極層包含聚 合 Si、W、WN、WSix、Al、Mo、Ta、TaN、TaSiN、ffiN、HfSiN、 Ti、TiN、TiSiN、Mo、MoN、Re、或是 Ru。 十一、圖式: 22
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