TW304301B - - Google Patents

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TW304301B
TW304301B TW084101220A TW84101220A TW304301B TW 304301 B TW304301 B TW 304301B TW 084101220 A TW084101220 A TW 084101220A TW 84101220 A TW84101220 A TW 84101220A TW 304301 B TW304301 B TW 304301B
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  • Engineering & Computer Science (AREA)
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Description

經濟部中央標隼局員工消费合作社印策 A7 B7 五、發明説明(1 ) 1 .發明領域 本發明係關於半導體元件,特別是有關於具有η >多 晶矽閘之銦或鎵摻雜掩埋Ρ通道金屬氧化半導體場效電晶 體(PMOSFET),此處所指之PMOSFET係指 具有改之短通道特性與及特別逋用於互補金靥氧化半導體 (C Μ 0 S )之技術。 2 .相關技藝之說明 製造MOS F ETS之方法已是習知之技藝,具有1 微米或更短長度之有效短通道之MOSFETS,對於非 常大型積體電路(WLS I )或超大型積體電路( ULS I )而言是非常需要的,藉由縮小元件尺寸可改良 FET積體《路的密度,具有1.〇#m或更短有效通道 之傅統MO S F ETS會呈現短通道之效果,例如,較大 之V th臨界値、次臨界漏電値與及對尺寸縮小之元件的表 現有所損害之通道穿透。 藉由摻雜具有雜質離子的材料可以改良半導體材料的 特性,傳統的摻雜物例如,硼、磷、砷及銻離子,可以被 使用以控制MOS F ET的層阻抗,典型的 PMOS FET通道係摻雜硼或硼化物,例如,B F2, 舉例而言,請參考 Τ· Ohguro等所著之 Tenth Micron PMOSFETs with Ultra-Thin Epitaxial Channel Layer G r o w π b y U 1 t r a - H i g h V a c u u in C V D , I E D Μ T e c h n i c a 1
Degest, pp. 433 - 436 ( 1993 ),但是,.摻雜硼或硼化物的 表紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐)-4 - ----------^ I裝------訂-----』線 (請先閱讀背面之注意事項再填寫本頁) A7 4301 B7 五、發明説明(2 ) P通道,對PMOS元件的基底會有不需要的擴散及穿透 〇 (請先閲讀背面之注意事項再填寫本頁) 與硼離子的布植摻雜曲線相比,銦離子呈現尖銳的布 植摻雜曲線,銦雜子離子已被佈植於次微米 NMOSFETS以獲得非均勻的通道摻雜,請參考G. G . S h a h i d i 等所著之 I n d i u ra C h a η n e 1 I m p 1 a n t f 〇 r Improved Short-Channel Behavior of Submicrometer NMOSFET’s , IEEE Electron Device Letters, Vol. 14, No. 8, pp. 409-411 (1993)。 P+多晶矽閘已被應用於次0 · PMOS掩 t 經濟部中央橾準局員工消費合作杜印製 埋通道電晶體,以減少一些短道效應,請參考Βγιηη^-ί; r i c S u b m i c r ο n C Μ 0 S T e c h π ο 1 o g y ' I E D Μ T e c h n i c a 1 Digest, pp. 2 5 2-255 (1986),但是,當具有 P+多晶矽 閘的PMOS F ET被使用於CMOS技術時,將需要兩 種多晶矽閘製程,亦即,CMOS中的NMOS FET之 η’多晶矽閘PMOS FET,之p ♦多晶矽閘,在CMOS 技術中η +及p +多晶矽閘兩種製程同時存在,將使得製造 流程複雜化及增加成本,更且,Ρ+多晶矽閛通常都摻雜 硼,而硼對電晶體的閘氧化物及基底具有非所需的穿透傾 向,此外,可得到的Ρ+多晶矽之最低片阻抗比多晶矽 之最低片阻抗還大2至3倍。 爲了要獏得具有較窄通道及改良短通道的特性之半導 體裝置,PMOSFET需要具有η*多晶矽閘及摻有雜 質離子的掩埋ρ通道,該雜質離子在基.底中,顯示較尖銳 本紙張尺度適用中國國家標準(CNS ) Α4規格(210Χ297公釐) 經濟部中央標準局員工消費合作社印製 A7 _ B7 五、發明説明(3 ) 的佈植摻雜曲線及較少的摻雜離子擴散。 發明之簡要 提供具有η +多晶矽閘之銦或鎵摻雜掩埋通道之 PMOS場效電晶體,用以製造具有掩埋通道及具有約 0 .5#m或更短的有效通道長度之PMOSFETS之 方法,此處所說明之較窄掩埋通道PMO S F ET s呈現 出改良的短通道特性,該短通道特性包含最小之Vth臨界 値,已降低之通道穿透,及已減少之次臨界漏電値,此外 ,也提供包含有此處所指之掩埋通道PMOSFETs之 CMOS0 圊形之簡要說明 圖1.係根據本發明之掩埋通道PMOSFET裝置 之剖面側視圖。 圓2至7係剖面側視圖以說明在根據本發明之掩埋通 道PMO S F ET裝置,其於不同製造階段時之暫時結構 Ο 圚8係在傳統PMOS F ET中,硼離子於其掩埋通 道中,與及磷及砷離子於其η井中之離子佈植曲線的說明 圖。 圖9係在根據本發明的PMOS F ΕΤ中,銦離子於 其掩埋通道中,與及磷及砷離子於其中η井中之離子佈植 曲線的說明圖。 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐)_ Α _ 1!.------^ I裝------訂------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局負工消費合作社印製 A 7 B7 五、發明説明(4 ) 圚1 0係三個具有不同掩埋通道深度之掩埋通道 PMOSFETs,於固定臨電壓時,有效通道長度與次 臨界漏電流之函數關係之說明圖形。 較佳實施例之詳細說明 此處所指之PMOS FET s係具有η*多晶矽閘及 含有銦或鎵雜質離子之掩埋通道,因爲銦及鎵之原子序數 比硼還高,所以,根據本發明所得到之掩埋通道,比摻雜 硼的掩埋通道具有較尖銳之佈値摻雜曲線,更且,銦或鎵 在矽中比硼及硼化物,例如,B F2具有更低之擴散常數 ,在此處所指之PMO S F ET s的掩埋通道中,銦或鎵 摻雜物之較尖銳的佈植摻雜曲線及較低之擴散會形成較窄 的掩埋通道,亦即,具有掩埋通道深度降低之掩埋通道, 其中,通道深度係由基底與閘氧化物之界面處開始量起, 本發明可以提供比摻雜硼的通道還窄約5 0 0個埃的掩埋 通道PMOSFETs。 當掩埋通道深度被降低時,通道的最小長度可以得到 顯著的改善,爲了避免不良的短通道效應,閘長度應該比 閘長度Lmin還長,本發明的銦或鎵摻雜掩埋通道 P Μ 0 S F E T s對於製造具有改良短通道特性之次 〇 . 5微米β Μ 0 S電晶體,特別有效。 圖1係根據本發明之掩埋通道PMOS F ET s的較 佳實施例之剖面側視圖,PMOS F ΕΤ包含一個基底 1 0、場氧化物層1 2、掩埋通道區域.1 5、閘氧化物 本紙張尺度適用中國國家標準(CNS ) Α4規格(210Χ297公釐) —-------1¾衣------ir------.^ (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標隼局貝工消費合作杜印製 A7 ___—_ B7 五、發明説明(5 ) 1 6 a、η ♦多晶矽閘電極1 8 a、源極區域2 2、吸極 區域2 4與間隔絕緣層2 6。
圚2至6係剖面側視圖以說明根據本發明的—個實施 例之掩埋通道PMOS F ET裝置,其於不同製造階段時 之暂時結構,參考圖2,基底1 〇係作爲製造掩埋通道 PMOSFET的起始材料,基底1〇包含—個半導體材 料,例如,矽、鎵、或砷,基底10最好是佈植有澳度約 1父1〇16至1父1019 atoms/cm3的磷及/或砷離 η型或η井矽晶片,基底1 0最好具有<1 〇 〇>方向及 約1 0—3至1 0 ohm— cm的阻抗,在一個實施例中 ,η型井可以包含一個穿透抑制佈植,例如,1 . 5X 1 013cm_2劑量的砷離子,此外,基底1 〇最好包含有 一個場氧化物層1 2 ,該場氧化物係與基底的主要表面相 鄰,以使得MOS FET與相鄰的其它結構絕緣,場氧化 物最好是二氧化矽。 如圖3所示,可以在矽基底10的主要表面上藉由傳 統氧化製程形成一個網層1 4,以便在離子佈植時,防止 基底表面受到污染,網層1 4最好包含厚度約5 0埃至 2 0 0埃的二氧化矽,參考圖3,而後,銦或鎵離子會經 由網層1 4被導入基底1 0,在摻雜步驟中,最好有網厝 存在,但是,離子可以被植入未含有網層的基底,在圖3 中,銦或鎵摻雜物被植入基底1 0至虛線所示之深度,以 形成掩埋p型通道1 5。 或者,銦或鎵離子的混合物可以被植入基底1 0,以 本紙張尺度適用中國國家標隼(CNS ) A4規格(210X297公釐)_ _ — _,-----..1-,,1 裝------訂------气線 (請先閱讀背面之注意事項再填寫本頁) 3C43〇i A7 __B7 五、發明説明(6 ) 取得此處所指之掩埋通道PMOSFETs ,以本發明的 另一個觀點而言,包含有銦離子及至少一個其它摻雜物, 或者,鎵離子及至少一個其它摻雜物的掩埋通道之 PMOS FET s可以被取得,根據本發明,要獲得窄通 道,銦離子是最佳的摻雜物。 經濟部中央樣準局貝工消費合作杜印製 (請先閲讀背面之注意事項再填寫本頁) 任何摻雜方法都可能被使用以便將銦或鎵離子植入掩 埋通道區域,傳統的摻雜方法係已習知之技藝,舉例而言 ,擴散或離子佈植均可被使用以便將銦或鎵雜質離子植入 掩埋通道1E域,慘雜方法見於McGraw Hill Book Company所 發行, S . M . Sze 所著之 VLS I Techno 1 ogy 之第 7 及 8 章 2 7 2 至 3 7 4 頁,與及 Silicon Processing for the VLSI Era Volume 1: Process Technology, S . Wolf and R. N. Tauber, Lattice Press, pp. 308-311( 1986),上述文件均併入參考,離子佈植係將摻雜物導入 PMO S裝置的掩埋通道之較佳方法,植入之劑置最好是 從約1 X 1 0 Ucm-2至1 X 1 0 14cm—2而植入能童最 好是小於約1 0 Ok eV,較窄的掩埋通道,亦即,具有 減少的掩埋通道深度之掩埋通道,可以藉由減少植入能量 而獏得,要獲得根據本發明之狹窄掩埋通道,植入能量最 好是從約3 0 k eV至約5 0 K eV,植入濃度最好是從 約 1 X 1 0 16至約 1 X 1 0 19 atoms/cm3,在雜子離 子佈植之後,在惰性氣體氣氛下,完成快速的熱退火,以 除去由於離子佈植對基底10所造成的損害。 藉由蝕刻以除去網層1 4 ,而後,一個絕緣薄膜,舉 本紙張尺度適用中國國家揉準(CNS ) A4規格(210X297公釐)_ q _ 經濟部中央棣準局貝工消费合作杜印製 A7 _ B7 五、發明説明(7 ) 例而言,例如一個閘絕緣層1 6,如圖4所示,會被長於 基底1 0的主要表面,可以使用熱氧化技術,於8 0 0 °C 至1 2 0 0°C的溫度下,將絕緣層1 6長於基底1 0之上 ,以獲得一個厚度約3 5埃至2 0 0埃的閘氧化物,從約 5 0埃至1 5 0埃厚的閘絕緣層是較佳的,約6 5埃厚的 閘絕緣層是最好的,佈植於本發明的掩埋通道 PMOSFET的銦或鎵摻雜物,在熱氧化步蹂中,比傳 統的摻雜物如硼離子,具有較少的擴散性,具有降低擴散 性的摻雜成份對於獲得次0 .5微米且具有改善的短通道 特性電晶體而言,是特別有利的。 如圖5所示,高濃度摻雜的n型(η—)多晶矽層 18被沈稹於閘氧化物屠16之上,舉例而言,藉由在多 晶矽層上擴散或佈植磷或砷以建立η +型的多晶矽層,可 I*. 以形成η *型多晶矽層,η +型多晶矽層最好是包含雜質離 子,例如,澳度從約1 X 1 0 19至約1 X 1 〇21atoms/ c m 3的磷、砷或銻。 , 參考6 ,掩埋通道PMOSm晶體的多晶矽閘電極 1 8 a,藉由使標準的光蝕印法而將η +型多晶矽層定型 及蝕刻之,可以被界定之,以取得小於1微米的閘長度, PMOSFET的有效掩埋長度(Leff)係由多晶矽閘 的長度所決定的,因此,小於0 . 5微米的閘長度是最喜 好的,當由定形及蝕刻多晶矽閘電極1 8 a而取得閘電極 1 8 a時,閘氧化物層1 6 a會被適當地界定,或者,可 以在將闞電極1 8 a定型及蝕刻之前,先界定閘氧化物層 本紙張尺度適用中國國家標準(CNS)A4規格( 210X297公釐)_ μ _ I j------^ ·裝------訂-----一線 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央橾隼局貝工消費合作社印製 A7 B7 五、發明説明(8 ) 1 6 a ° 在將離子佈植於基底1 〇之前,光罩2 0最好被沈稹 於閘電極上,以形成源極2 2及吸極2 4區域,源極2 2 及吸極2 4區域可以摻有硼離子或BF2,或者是,源極 及吸極區域可以摻有銦或鎵離子。 而後,間隔絕緣層2 6可以被形成於閘電極1 8 a的 側邊,更且,任何已知的金靥化設計可以被使用以形成 PMOS FET的源極、吸極及閘接觸。 圖8係具η +多晶矽閘及摻雜有硼離子的掩埋通道的 掩埋通道0 . 5//m PMOSFET,其電腦模擬離子 佈植曲線的說明圖,圖9係根據本發明,具有n~多晶矽 鬧及摻雜有銦離子的掩埋通道的掩埋通道〇 . 5 m PMOS F ET,其電腦模擬離子佈植曲線的說明圖,銦 離子通道佈植的劑量係在6 0 keV經由2 0 0埃網層氧 化物下,濃度爲1 . 4X1 013cm_2,與硼佈植曲線相 較,在基底中,銦離子提供較尖銳的佈植曲線及較少的擴 散性,此外,在具有銦摻雜掩埋通道的PMO S F ET的 基底η井中,可以取得較高濃度的η型離子,對於減少通 道穿透而言,在η井中的η型離子最好具有增.加之濃度, 摻雜有銦離子的PMOS FET的掩埋通道深度約 0 . 03#m,因此,約0 . 0 5;um的掩埋通道深度可 以以硼通道摻雜而取得,因此,較窄的掩埋通道可以以銦 通道摻雜而取得。 圖1 0係根據本發明的三個具有不同掩埋通道深度( 本紙張尺度適用中國國家標準(CNS ) Α4規格(210 X 297公釐) • 1* ---η-----^ -裝------訂------- 線— (請先閱讀背面之注意事項再填寫本頁) 11 經濟部中央標準局負工消费合作杜印製 A7 _ B7__ 五、發明説明(9 ) XB)之掩埋通道PMOSFETs於固定臨電壓 0 . 7 8V時,有效通道長度與次臨界漏電流之函數關係 之說明圖形,三個掩埋通道PMOS FET s分別具有 0 . 055;<m、0 · 08ym 及 0 . 〇l"m 之掩埋通 道深度,當掩埋通道深度被降低時,最小有效通道明顯地 獲得改蕃,此處所指的銦摻雜掩埋通道PMOS F ETS 之狹窄掩埋通道提供具有改良短通道特性之 PMO S F ET s,該改良短通道特性包含最小Vth臨界 値、降低之通道穿透及降低之次臨界漏電。 包含本發明的PMOSFETs的CMOS裝置,可 以用習知之方法製造之,請參考D. Roddy,Introduction t ο M i c r 〇 e 1 e c t r ο n i c s P e r g a ιη ο η P r e s s , ρ ρ · 1 0 0 -1 0 2 (1 978 )及 The E 1 ectrica 1 Engiπeering Handbοok,edited by Richard C_ Dorf, CRC Press, 丨 nc·, pp. 581-5 84及1631-1635 (1993),這些文件均一併列入參考,此 處所指之PMOSFETs特別適用於低電壓〇·1 至0.35#m CMOS技術。 圚1至10所說明之PMOSFETs並非欲將此處 所述之裝置限定於任何特別之實施例,在公布上述技術後 ,將本發明作修改及變化是可能的,舉例而言,對一個習 於此技藝的人而言,可以使用不同的技術於離子佈植、半 導體裝置層的沈稹(例如,以物理氣相沈積或化學氣相沈 積)、光蝕印及樣式轉換,來製造此處所述之 PMOSFETs,更且,可以將銦離子或鎵離子與銦及 本紙張尺度適用中國國家梂準(CNS)A4規格(210XW公釐)-- — I.------^ I裝------訂-----」線 (請先閱讀背面之注意事項再填寫本頁) A7 B7 五、發明説明(10) 鎵離子的混合,植入根據本發明的PMOS FET S的掩 埋通道內,此外,此處所指之PMOS F ET s的掩埋通 道可以被摻雜銦及至少一個其它摻雜物或鎵及至少一個其 它摻雜物,舉例而言,根據本發明的PMO S F E T s的 掩埋通道可以包含銦離子及硼離子,因此,在本發明及申 請專利所界定的範園內,可以對上述發明的特定實施例作 改變是可以理解的。 I-------* I裝------訂-----』線 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央橾準局員工消费合作社印製 本紙張尺度適用中國國家橾準(CNS)A4規格(210X297公釐)-13 -

Claims (1)

  1. 六、申請專利範圍 A8 B8 C8 D8 ψι ------y -/ιλ ^ Μ _ 第841Q122Q號專利申請案 ,¾•一 1中文申請專利範圍修正本 經濟部中央標準局員工消費合作社印製 民國86年1月呈 1 . 一種PMOSFET半導體裝置,其包含有: a) —個具有主要表面的η導電型半導體基底; b) Ρ導電型的源極及吸極區域’這些區域係形成於 該半導體基底的主要表面’並彼此分隔的’ 一個通道區域 於該半導體基底的主要表面被界定於源極及吸極區域之間 ,其中該通道區域摻雜銦雜質離子; c) 一個形成於該通道區域的主要表面上的絕緣薄膜 1 d ) —個η +雜質濃度之η型多晶矽形成於該絕緣薄 膜上相對於該通道區域。 / 2 .如申請專利範圍第1項之裝置,其中,該半導體 基底包含一個矽基底。 3 .如申請專利範圍第2項之裝置,其中,該半導體 基底包含一個η型基底,該通道區域包含一個ρ型區域, 該源極及吸極區域包含一個Ρ型區域,而該閘電極包含一 個η型多晶矽· 4 .如申請專利範圍第2項之裝置,其中,該半導體 基底包一個η井區域,該η井區域含有雜質離子,該雜質 離子選自包含磷、砷及銻之一族· 5 .如申請專利範圍第1項之PMOSFET裝置, (請先閲讀背面之注意事項再填寫本頁) .艮· 、-° 本紙浪尺度適用中國國家梂準(CNS ) A4規格(210 X 297公釐) 1 _ 1 _ A8 B8 C8 D8 的 4301 々、申請專利範圍 ,其中,該通道區域包含一個含有銦的雜質離子。 6 .如申請專利範圍第1項之PMOSFET裝置, ,其中,該通道區域更包含鎵雜質離子。 7 .如申請專利範圍第1項之PMO S F ET裝置, ,其中,該通道區域更包含至少一個其它選自含有鎵、硼 及兩者混合物的組群中之P型雜質離子。 8 .如申請專利範圍第1項之PMOSFET裝置, ,其中,該通道區域包含一個含有銦離子的雜質,其濃度 約爲 1 X 1 0 1 e a t 〇 m s / c m 3 至 1 X 1 0 1 e a t 〇 m s / cm3» 9 .如申請專利範圍第1項之PMOSFET裝置, ,其中,該通道區域包含一個含有鎵離子的雜質,其濃度 約爲 1 X 1 0 16 atoms/ c m3至 1 X 1 0 19_ atoms/ cm3· 10 .如申請專利範圍第1項之PMOSFET裝置 ,其中,該多晶矽閘電極之長度約小於1 。 11 .如申請專利範圍第1項之PMOSFET裝置 ,其中,該多晶矽閘電極之長度約小於〇 · 5 //m。 12 ·如申請專利範圍第1項之PMOSFET裝置 ,其中,該η型多晶矽閘電極具有一個濃度約爲1 0 10 atoms/ c m3至 1 〇 21 atoms/ c m3的離子。 13 .如申請專利範圍第1項之PMOSFET裝置 ,其中,該通道區域具有一個約小於〇 . 5 jam的有效通 道長度· 本紙張尺度適用中國國家梂準(CNS ) A4規格(210X297公釐) ----:-----1------ir.——^-I^ I (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 A8 B8 C8 D8 經濟部中央標準局員工消費合作社印製 六、申請專利範圍 1 I 1 4 • 如 串 請 專 利 範 圍 第 1 項 之 Ρ Μ 0 S F E T 裝 置 1 9 其 中 該 通 道 區 域 之 深 度 約 小 於 0 • 1 β m 0 1 | 1 5 • 如 串 請 專 利 範 圍 第 1 項 之 Ρ Μ 〇 S F E T 裝 置 請 1 1 | 9 其 中 > 該 通 道 區 域 具 有 0 • 0 3 β m 之 深 度 0 先 閣 讀 1 1 1 6 • 如 串 請 專 利 範 圍 第 1 項 之 P Μ 0 S F E T 裝 置 背 之 1 i 其 中 該 絕 緣 薄 膜 包 含 —. 個 閘 絕 緣 層 ο 注 意 事 1 1 7 • 如 串 請 專 利 範 圍 第 1 6 項 之 Ρ Μ 〇 S F E T 裝 項 再 填 1 置 » 其 中 > 該 閘 絕 緣 層 之 厚度 約 小 於 1 5 0 埃 0 寫 本 頁 V Γ 1 8 • 如 串 請 專 利 範 圍 第 3 項 之 P Μ 〇 S F E T 裝 置 '—^ 1 I > 其 中 > 該 源 極 與 吸 極 區 域 含 有 選 白 硼 、 銦 、 鎵 — 族 之 雜 1 1 | 質 離 子 0 1 1 訂 1 9 —* 種 製 造 Ρ Μ 0 S F Ε Τ 裝 置 的 製 程 其 包 含 1 下 列 步 驟 ; 1 a ) 提 供 一 個 具 有 主 要 表 面 的 基 底 1 1 b ) 藉 由 將 雜 質 離 子 佈 植 入 該 基 底 的 主 要 表 面 而 形 歧 成 -- 個 具 有 第 一 尾 端 及 第 二 尾 端 的 通 道 區 域 1 其 中 該 雜 1 I 質 離 子 係 選 白 含 有 ΔΓΟ 翻 、 鎵 及 兩 者 混 合 物 之 組 群 , 1 1 I C ) 於 該 基 底 的 主 要 表 面 上 形 成 一 個 閘 氧 化 物 層 1 1 1 d ) 於 該 閘 氧 化 物 層 與 該 基 底 的 主 要 表 面 上 形 成 一 1 1 個 高 濃 度 摻 雜 的 η 型 多 晶 矽 層 t ί 1 e ) 將 該 多 晶 矽 層 圖 樣 化 及 蝕 刻 > 而 在 該 閘 氧 化 物 層 1 1 上 形 成 至 少 一 個 髙 濃 度 摻 雜 的 η 型 多 晶 矽 閘 電 極 1 與 及 1 | f ) 藉 由 將 雜 質 離 子 佈 植 入 該 基 底 的 該 主 要 表 面 內 > 1 I 而 於 相 鄰 於 該 掩 埋 通 道 區 域 的 第 — 尾 端 處 形 成 一 個 源 極 區 1 本紙張尺度適用中國國家標準(CNS ) A4現格(210X297公釐) -3 - 經濟部中央標準局員工消費合作社印製 A8 B8 — C8 D8 六、申請專利範圍 域,與及,在相鄰於該掩埋通道區域的第二尾端處形成一 個吸極區域。 2 0 .如申請專利範圍第1 9項之製造 PMO S F E T裝置的製程,其更包含於該多晶矽閘極上 形成至少一個絕緣餍。 21.如申請專利範圍第19項之製造 PMO S F E T裝置的製程,其更包含於該源極區域、該 吸極區域及該閘電極上形成接觸層· 2 2 .如申請專利範圍第1 9項之製程,其中*提供 一個基底的步驟包含提供一個場氧化物層的基底。 2 3 .如申請專利範圍第1 9項之製程,其中,提供 一個基底的步驟包含將一個厚度約小於2 0 0埃的網層加 於該基底。 2 4 .如申請專利範圍第1 9項之製程,其中’形成 該通道區域的該步驟包含:以約小於1 0 0 k e V的佈植 能置,將劑量約爲1 X 1 OHcm -2至1 X 1 0 14 c m _2 的雜質離子佈植之。 25 .如申請專利範圍第19項之製程,其中’形成 該通道區域的該步驟包含:以約3 0 k e V的佈植能量’ 將劑量約爲1 . 4xl 313cm-2的雜質離子佈植之。 2 6 .如申請專利範圍第1 9項之製程,其所產生之 PMOSFET裝置。 2 7 . —個包含至少一個NMO S F E T及至少一個 PMOSFET的CMOS裝置,其中,該 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本育) 装 訂 -4 - ABCD 々、申請專利範圍 PMOSFET裝置包含: a) —個具有主要表面的η型半導體基底; b) 於該半導體基底的表面上形成互相分開的ρ型源 極與吸極區域,一個通道區域在該基底的主要表面上被界 定於源極與吸極區域之間,該通道區包含一個選自含有銦 、鎵及兩者混合之組群中的雜質離子; c) 於該通道區域的主要表面上形成一個絕緣薄膜; 與及 d )於相對於該通道區域的該絕緣薄膜的表面上,形 成一個η型多晶矽閘電極。 2 8 .如申請專利範圍第2 7項之CMOS裝置,其 中’該PMO S F E T的該道區域具有一個濃度約爲 1 X 1 0 ie atoms/ c m 3至 1 X 1 〇 atoms/ c m 3的 銦離子。 ’ 2 9 ·如申請專利範圍第2 7項之CMO S裝置,其 中,該CMO S裝置的該閘長度約小於1 。 --- I n I I (I I -^^— --I . i I . 7 、1 - . . (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局貝工消費合作社印製 本紙張尺度逋用中國國家標準(CNS > A4規格(210X297公釐) 5
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