TWI420675B - 具遮罩電極之半導體裝置及其方法 - Google Patents

具遮罩電極之半導體裝置及其方法 Download PDF

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TWI420675B
TWI420675B TW095111820A TW95111820A TWI420675B TW I420675 B TWI420675 B TW I420675B TW 095111820 A TW095111820 A TW 095111820A TW 95111820 A TW95111820 A TW 95111820A TW I420675 B TWI420675 B TW I420675B
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Gary H Loechelt
Peter J Zdebel
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Semiconductor Components Ind
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Description

具遮罩電極之半導體裝置及其方法
本發明大抵關於半導體裝置,且更明確為關於包括高速裝置例如RF放大器在內之功率切換裝置,及其製造方法。
金屬氧化物半導體場效電晶體(MOSFETs)係一普遍之功率切換裝置類型。一MOSFET裝置包括一源極區、一汲極區、一延伸於源極與汲極區之間之通道區、及一鄰接於通道區之閘極結構。閘極結構包括一傳導性閘極,其係由一薄介電層鄰接於且分隔於通道區。
當一MOSFET裝置在導通狀態時,一電壓施加於閘極結構,以利於源極與汲極區之間形成一傳導通道區,供電流流過該裝置。在關閉狀態時,施加於閘極結構之任意電壓相當低,因此一傳導通道並未形成,即不發生電流流動。在關閉狀態期間,該裝置需支援源極與汲極區之間之一高電壓。
在將MOSFET裝置之性能最佳化時,設計者常面對裝置參數性能之取捨。更明確地說,目前可用之裝置結構或製程選擇可以改良一項裝置參數,但是此項選擇同時會減弱一或多項其他裝置參數。例如,足以改良輸出或驅動電流(ID S )能力及一MOSFET裝置之導通電阻的目前可用結構或製程亦降低其崩潰電壓(BVD S S )能力及增加閘極-汲極電容。
據此,改良之半導體裝置結構及其製造方法係解決上述議題及其他事項所必需者。
為了方便瞭解,圖中之元件並未依比例繪製,且相同之元件編號係適度使用在諸圖中。儘管文後之探討揭述一n通道裝置,本發明亦關於p通道裝置,其可以藉由將該等層及區域之傳導性型式相反而形成。
此外,本發明之裝置可以具體實施於一細胞式設計(其中該等主體區為複數個細胞區)或一單一主體設計(其中該主體區係由形成於一長形圖案中之單一區域構成,典型上為一彎曲形圖案)。惟,本發明之裝置將在本文內以一細胞式設計揭述之,以便於瞭解。應該瞭解的是本發明應涵蓋一細胞式設計及一單一基底設計二者。此外,儘管本發明之裝置被揭示為一MOSFET裝置,本發明亦可應用於雙極電晶體及絕緣閘極雙極電晶體,以及其他包含一輸入端、一輸出端及一控制電極之裝置。
圖1揭示根據本發明之一實施例之一絕緣閘極場效電晶體(IGFET)、MOSFET、功率電晶體、或切換裝置或單元10之局部放大截面圖。舉例而言,在許多該等裝置之中,裝置10係與邏輯器及/或其他組件整合至一半導體晶片內,而成為一功率積體電路之一部分。另者,在許多該等裝置之中,裝置10被整合以形成一不連續之電晶體裝置。
裝置10包括一半導體材料區11,其例如包含一具有大約0.001至0.005歐姆-厘米範圍電阻係數之n型矽基板12,且可以摻雜砷。在所示之實施例中,基板12提供一汲極接點或一第一電流攜載接點。一半導體層或延伸之汲極區14形成於基板12內或其上。在一實施例中,半導體層14係使用習知磊晶生長技術形成。另者,半導體層14係使用習知摻雜與擴散技術形成。在一適用於一50伏特裝置之實施例中,半導體層14係n型且有一大約1.0×101 5 原子/立方厘米之摻雜物濃度,及其具有一大約3至5微米厚度。半導體層14之厚度及摻雜物濃度係依據裝置10之所需BVD S S 比率而增減。可以瞭解的是其他材料也可用於半導體材料11之主體或其部分,包括矽鍺、矽鍺碳、摻碳之矽、碳化矽、或類此者。此外,在可替代實施例中,基板12之傳導性型式被換成相反於半導體層14之傳導性型式,以形成一絕緣閘極雙極電晶體10。
裝置10亦包括一n型區或氈層17,其形成於半導體材料區11之上或主表面18內或其鄰側。n型區17提供一用於裝置10之低電阻電流路徑。在一示範性實施例中,n型區17具有一大約6.0×101 6 原子/立方厘米之最大濃度,及大約0.4微米深度。
一主體、基底、或主體區31形成於半導體層14內且延伸自主表面18。舉例而言,主體區31包含p型傳導性,且其具有一適於形成一逆向層之摻雜物濃度,該逆向層操作如同裝置10之傳導通道45。主體區31係從主表面18延伸一例如大約0.5至3.0微米深度。一n型源極區或電流攜載區33形成於主體區31內,且從主表面18延伸一例如大約0.1至0.5微米之深度。一p型主體接點或接觸區36亦形成於主體區31內,且其提供一較低接觸電阻於主表面18處之主體區31。此外,接觸區36降低源極區33下方之主體區31之片電阻係數,抑制寄生雙極效應。
一第一介電層41形成於主表面18之上方或鄰接於其一部分。例如,介電層41包含一具有大約0.05至0.2微米厚度之熱氧化物層。一第二介電層42形成於介電層41上方。在一實施例中,第二介電層42包含氮化矽,且具有大約0.05至0.1微米厚度。
根據本發明,渠溝電極、遮罩電極、遮罩端、或第二控制端結構21係形成鄰接於、間隔於、或接近於主體區31。在一實施例中,各結構21包含一渠溝或槽道23,其形成於半導體層14之一部分內。結構21尚包括第三介電層、電極隔離層、或閘極介電層24,其形成於渠溝23之表面上。第三介電層24例如包含一具有大約0.03至0.1微米厚度之氧化矽。在可替代實施例中,第三介電層24包含氮化矽、過氧化鉭、二氧化鈦、鈦酸鍶鋇、或其組合,包括其與氧化矽之組合,或類此者。
摻雜之多晶性半導體層或傳導層46形成於第三介電層24及第二介電層42上方。在一實施例中,傳導層46包含摻雜之聚矽,且具有一大約5.0×102 0 原子/立方厘米之摻雜濃度、具有n型傳導性、及具有大約0.1微米厚度。在一可替代實施例中,傳導層46包含p型傳導性。舉例而言,渠溝23係與主體區31相隔一大約0.5至3.0微米之距離26。再舉例而言,渠溝23係從主表面18延伸一例如大約0.5至1.5微米之距離27。
一第四介電層48形成於傳導層46上,及一第五介電層51形成於第四介電層48上。舉例而言,第四介電層48包含氮化矽(例如大約0.05微米厚度),及介電層51包含一沉積之氧化矽(例如大約0.7微米厚度)。在一實施例中,介電層51包含一拋光之介電質,以補償渠溝23之存在。例如,介電層51係在沉積後使用化學機械性拋光技術或類此者拋光。一傳導層53形成於介電層51上方,且其例如包含n型多晶矽或聚矽(例如大約0.3微米厚度)。
閘極介電層43形成於與主體區31相鄰之主表面18上方或鄰接於其另一部分。閘極介電層43例如包含氧化矽,且具有大約0.01至0.1微米厚度。在可替代實施例中,閘極介電層43包含氮化矽、過氧化鉭、二氧化鈦、鈦酸鍶鋇、或其組合,包括其與氧化矽之組合,或類此者。
傳導性填隙物閘極區、垂直填隙物閘極區、或填隙物界定之閘極區或傳導性電極57形成於閘極介電層43上方,且其利用介電質填隙物59而隔離於傳導層46。傳導性填隙物閘極區57連同閘極介電層43一起形成控制電極、閘極結構、或第一控制端結構58。傳導性填隙物閘極區57例如包含n型多晶矽或聚矽,且其厚度大約0.2至0.8微米。在一示範性實施例中,介電質填隙物59包含氮化矽,且其厚度大約0.1微米。填隙物閘極區57耦合於傳導層53,以提供一傳導性閘極結構,其控制通道45之形成及裝置10內之電流傳導。
在所示之實施例中,一傳導性連接部分77將填隙物閘極區57耦合於傳導層53。傳導性連接部分77例如包含n型聚矽。一填隙物界定之閘極區係關於一控制電極,其在一表面上沉積閘極材料,以利控制一形成於另一垂直表面上之通道。在裝置10之例子中,通道45形成於主表面18處,該處可視為一水平表面。用於形成填隙物閘極區57之控制電極膜係沿著與表面18垂直之垂直表面68而沉積。
相較於習知裝置,傳導性填隙物閘極區57提供最小之閘極-汲極重疊,藉此大幅減少閘極電荷。此外,在裝置10中,用於閘極之電氣性路線係由傳導層53提供,其位於主表面18上方,藉此進一步減少閘極電荷。再者,在其他元件中,傳導層46之功能有如介置於閘極與汲極之間之一接地平面或遮蔽層,以利於進一步減小閘極至汲極之電容。這些特性提供增強之切換速度及減低之輸入電荷要求。
一第六介電層61形成於裝置10之一部分上方,且其例如包含大約0.05微米厚度之氮化矽。一層間介電質(ILD)層62形成於裝置10之一部分上方,且其例如包含一具有大約0.8微米厚度之沉積氧化矽。一開孔形成於該等介電層內,以提供裝置10一用於源極接觸層63之接點。如圖所示,主表面18之一部分被蝕刻以利源極接觸層63接觸於源極區33及主體區31。在一實施例中,源極接觸層63包含一鋁矽合金或類此者。一汲極接觸層或傳導電極66形成於半導體材料區11之一相對立表面上,且其例如包含一可熔接之金屬結構,例如鈦鎳銀、鉻鎳金、或類此者。
裝置10之操作過程如下。假設源極或輸入端63係以一0伏特電位VS 操作,則填隙物閘極區57接收到一控制電壓VG =2.5伏特,其較大於裝置10之傳導臨界值,汲極或輸出端66則以汲極電位VD =5.0伏特操作。VG 及VS 等值使主體區31在填隙物閘極區57下方轉變而形成通道45,其將源極區33電氣性連接於層17。一裝置電流ID S 從源極端63流出,且選路通過源極區33、通道45、層17、及半導體層14到達汲極端66。在一實施例中,ID S =1.0安培。欲將裝置10切換至關閉狀態時,一小於該裝置傳導臨界值之控制電壓VG 施加於填隙物閘極57(例如,VG <2.5伏特)。此將通道45去除,且ID S 不再流過裝置10。
遮罩電極21連接、耦合、或固定於一電位Vo ,其相同於一供給電壓、一中間電壓、一獨立電壓、電壓信號、或接地。在關閉狀態中,遮罩電極21作為閘極控制電極58與汲極或輸出電極66之間之一電壓遮罩。亦即,遮罩電極21功能在使靜電電位平面化,及當裝置10在off或封阻狀態時,其減低發生在主體區31及半導體層14角隅處之曲率半徑效應。
較特別的是,遮罩電極21將裝置10之輸入與輸出之間之大電位差分割成二部分,其中較大者係在遮罩電極21與輸出端(例如汲極端66)之間,而其中較小者在遮罩電極21與閘極結構58及輸入端(例如源極端63)之間。此電壓差產生多項結果。
首先,傳統之高電壓技術可用來適應於遮罩電極21與輸出端之間之電位差之較大部分,使裝置10相容於現有之高電壓技術。該等技術包括調整半導體層14之厚度與摻雜物濃度及介電層24之厚度,以符合一給定之崩潰電壓要求。因為遮罩電極21之電壓遮罩效應,裝置10之其他部分,例如,閘極氧化物43之厚度或層17之摻雜物濃度,其可依比例調整成數個值,該等值在無電壓遮罩效應下則不可行。此改良了裝置10之整體性能,包括電流量及切換速度在內。
此外,因為遮罩電極21將控制電極58隔離於輸出端66及其最終負載(VD ),故可達成較理想之輸出特徵。例如,所提供之該隔離造成輸出電流(IDS ),其對於輸出電壓(VD )之變化較不敏感,故其僅取決於控制電壓(VG )之變化。
最後,當裝置10在導通狀態時,遮罩電極21可用於在渠溝23之表面處產生電荷蓄積,其進一步增加汲極電流IDS 且降低導通狀態電阻。
圖2係一圖表,揭示在一5.0伏特之偏壓VGS 下,裝置10之汲極電流IDS 性能成為一施加於遮罩電極21之一獨立遮罩至源極電壓(VOS =VO -VS )之函數。此外,圖2比較具有一p型傳導層46(資料3A)與一n型傳導層46(資料4A)之裝置10。此二結構被進一步比較於一具有一p型電極平面或無渠溝結構之裝置(資料1A)及一具有一n型電極平面或無渠溝結構之裝置(資料2A)。
圖3係一圖表,揭示崩潰電壓(BVDSS ),其為一獨立遮罩對應於施加於遮罩電極21之源極電壓(VOS )之函數。此外,圖3比較具有一p型傳導層46(資料3B)與一n型傳導層46(資料4B)之裝置10。此二結構被進一步比較於一具有一p型電極平面或無渠溝結構(資料1B)之裝置及一具有一n型電極平面或無渠溝結構(資料2B)之裝置。
圖4係一圖表,揭示ID S A T 成為圖2、3之一組合或相互關係之BVD S S 之函數。資料元素1C對應於一具有一p型電極之平面結構,資料元素2C對應於一具有一n型電極之平面結構,資料元素3C對應於具有一p型傳導層46之裝置10,及資料元素4C對應於具有一n型傳導層46之裝置10。如圖4所示,根據本發明具有遮罩電極21之裝置10提供增強之BVD S S 性能,同時達成優異之ID S A T 特徵。
請即參閱圖5-10 一種用於形成本發明之裝置10之方法將說明於後。圖5揭示裝置10在一初期製造階段時之局部放大截面圖。半導體材料11之主體備有一形成於半導體層14內之n型層17。在一實施例中,磷係以一大約2.0×101 2 原子/平方厘米之劑量且一大約600 KeV植入能量植入,以形成n型層17。第一介電層41形成於主表面18上方,且其例如包含一大約0.05至0.2微米厚之氧化矽。一在大約攝氏900度時生長之熱氧化物亦適合。其次,第二介電層42接著形成於第一介電層41上方,且其例如包含大約0.05至0.1微米之氮化矽。一習知微影蝕刻步驟被用於在第一及第二介電層41、42內形成開孔,以曝露主表面18之一部分。其次,渠溝23形成於半導體層14內且自主表面18延伸。舉例而言,渠溝23係在一使用以氟或氯為主之化學劑的乾蝕刻系統中蝕刻。渠溝23包含一單一連續性渠溝或連接之渠溝母體。另者,渠溝23包含複數個別渠溝,其具有封閉端且由半導體材料11之一部分主體分隔。第三介電層24接著形成於渠溝23之表面上方,且其例如包含一大約0.03至0.1微米厚度之氧化矽。
圖6揭示裝置10之一實施例在一稍後製造階段時之局部放大截面圖。傳導層46接著形成於第三介電層24及其餘部分第二介電層42上方。在一實施例中,層46包含大約0.1微米之聚矽,且可沉積摻雜或不摻雜。若傳導層46初期為沉積不摻雜,傳導層46隨後即使用例如離子植入技術而摻雜。在一實施例中,傳導層46係n型且以磷摻雜。一大約5.0×101 5 至1.0×101 6 原子/平方厘米之磷離子植入劑量且一大約60 KeV植入能量即足以將傳導層46摻雜。在一可替代實施例中,傳導層46包含p型傳導性,且一大約5.0×101 5 至1.0×101 6 原子/平方厘米之硼離子植入劑量且一大約30 KeV植入能量即足以將傳導層46摻雜。
其次,第四介電層48形成於傳導層46上方,且第五介電層51形成於第四介電層48上方。第四介電層48例如包含氮化矽(例如大約0.05微米厚度),且介電層51包含一沉積氧化物(例如大約0.7微米厚度)。在一實施例中,第五介電層51例如使用化學機械性拋光製程或類此者拋光。
傳導層53接著形成於第五介電層51上方,且其例如包含n型聚矽(例如大約0.3微米厚度)。一保護層54形成於傳導層53上方,且其例如包含大約0.15微米氮化矽。
一微影蝕刻步驟被執行以蝕刻通過諸層54、53、51、48、46及42,而提供一開孔70。此亦形成基座式堆疊結構56,其係由諸層42、46、48、51、53及54之其餘部分組成。在一實施例中,開孔70具有一大約5.0至8.0微米寬度73。
圖7揭示裝置10在形成介電質填隙物59之其他加工步驟後之局部放大截面圖。在一實施例中,一氮化矽膜沉積於基座式堆疊結構56與第一介電層41上方。舉例而言,一大約0.1微米厚之氮化矽膜使用化學氣相沉積技術沉積。其次,一習知非等向性回蝕步驟被用於將基座式堆疊結構56與第一介電層41上方之氮化矽層去除,同時將該氮化矽層之一部分留在側壁或垂直表面68上,以形成介電質填隙物59。
在另一步驟中,一氧化矽濕化學蝕刻接著被用於將開孔70內之介電層41部分去除。舉例而言,一稀釋之氫氟酸(例如50:1)被用於蝕刻介電層41。在一示範性實施例中,蝕刻時間加長(例如8至15分鐘),以利於從介電質填隙物59下方將介電層41下切或去除材料,以形成凹部74。依此方式凹陷之介電層41可確保主體區31內所形成之通道45(如圖1所示)延伸入半導體層14,以供通道電流較有效率地流動。在一示範性實施例中,凹部74係在介電質填隙物59下方凹陷一小於約0.1微米之距離。一熱氧化矽接著在開孔70內之主表面18上生長至一大約0.0125微米厚度,以形成閘極介電層43。
圖8揭示裝置10在其他加工後之局部放大截面圖。一順應性半導體材料層571係在裝置10上方沉積至一大約0.1至0.15微米厚度。硼摻雜物隨後被導入通過開孔70及順應性半導體材料層571且進入主表面18,以提供p型摻雜物於主體區31。舉例而言,順應性半導體材料層571包含未摻雜之聚矽,且硼被植入通過未摻雜之聚矽且進入半導體層14。一大約1.0×101 3 原子/平方厘米之劑量及一大約120 KeV植入能量即適用於一50伏特裝置。
圖9揭示裝置10在其他加工後之局部放大截面圖。一第二順應性半導體材料層隨後沉積於順應性半導體材料層571上方,且此二層皆被蝕刻以提供填隙物閘極57。舉例而言,該第二順應性半導體材料層包含大約0.2微米之n型聚矽,其可在沉積期間摻雜或隨後利用離子植入或其他摻雜技術摻雜。填隙物閘極57形成後,另一0.015微米之閘極介電質(例如,氧化矽)添加至填隙物閘極57之表面及閘極氧化物43之曝露部分。
在一實施例中,形成填隙物閘極57之蝕刻步驟亦將保護層54及介電質填隙物59上方部分曝露。保護層54及介電質填隙物59上方部分接著被蝕刻,使保護層54被去除,且介電質填隙物59上方部分被去除於填隙物閘極57與傳導層53之間。
在又一步驟中,傳導性材料例如聚矽被沉積以提供連接傳導性部分77。連接傳導性部分77係填人在保護層54及介電質填隙物59部分之去除期間所形成之該間隙,且將填隙物閘極57耦合於或電氣性連接於傳導層53。一n型摻雜步驟隨後執行以將傳導性連接部分77摻雜,及提供摻雜物於源極區33。在一示範性實施例中,一大約3.0×101 5 原子/平方厘米之砷植入劑量及一大約80 KeV植入能量即用於此摻雜步驟。在一實施例中,植入之摻雜物係在此製程步驟中被激勵及擴散。另者或除此之外,摻雜物係在以下之圖10所示步驟後被激勵及擴散。
圖10揭示裝置10在其他製程步驟後之局部放大截面圖。第五介電層61被沉積,且其例如包含大約0.05微米之氮化矽。ILD層62接著沉積於第五介電層61上方。在一示範性實施例中,ILD層62包含一大約0.8微米厚度之沉積氧化矽。一選項性ILD漸縮形蝕刻被用於使ILD層62之部分62a呈漸縮形,此有助於後續成形層之階梯覆蓋率。
其次,一習知微影蝕刻步驟被用於形成接觸孔81,其曝露出主表面18之一部分。接觸區36隨後使用一p型離子植入步驟而形成通過開孔81。舉例而言,其使用一大約3.0×101 4 原子/平方厘米之硼離子植入劑量及一80KeV植入能量。一順應性填隙物層接著被沉積及蝕刻,以形成填隙物82。在一示範性實施例中,一0.3微米之氮化矽層被沉積及蝕刻,以形成填隙物82。一快速退火步驟係在此時使用以激勵及擴散多數個離子植入。例如,裝置10曝露於大約攝氏1030度下約45秒。
一蝕刻步驟隨後被用於去除主表面18之一部分,以形成凹部84。此供源極接觸層63接觸於源極區33與接觸區36,以將該等區域一併縮短。在後續之加工中,源極接觸層63被沉積及製圖。基板12接著可選項性薄化,且汲極接觸層66被沉積,以提供如圖1所示之結構。另應瞭解的是其他傳導層例如矽化物層可以在沉積源極接觸層63之前形成。
綜上以觀,本發明顯然已揭露一種新穎裝置及其製造方法。在其他特性之中,其包括一半導體裝置且在接近於裝置之通道區處形成一或多個遮罩電極,在其他事項之中,其改良了崩潰電壓性能。遮罩電極亦可供於通道區與遮罩電極之間使用一n型摻雜區,以改良汲極電流及導通電阻且不嚴重衝擊到切換性能。
儘管本發明已參考其特定實施例說明及揭示於前,但是本發明不應被拘限於諸揭示實施例。習於此技者可以瞭解到在不脫離本發明範疇下,仍可達成多種修改及變化。因此,本發明應涵蓋文後之請求項範疇內的諸此變化及修改。
10...裝置
11...半導體材料區
12...基板
14...半導體層
17...n型區
18...主表面
21...第二控制端結構
23...渠溝
24...第三介電層
26、27...距離
31...主體區
33...電流攜載區
36...接觸區
41...第一介電層
42...第二介電層
43...閘極介電層
44、70...開孔
45...傳導通道
46、53...傳導層
48...第四介電層
51...第五介電層
54...保護層
56...堆疊結構
57...填隙物閘極區
58...閘極結構
59...介電質填隙物
61...第六介電層
62...層間介電質(ILD)層
62a...ILD層之部分
63...源極接觸層
66...汲極端
68...側壁
73...寬度
74、84...凹部
77...傳導性連接部分
81...接觸孔
82...填隙物
571...半導體材料層
圖1揭示根據本發明之一實施例之一半導體結構之局部放大截面圖;圖2係一圖表,揭示本發明之多數個實施例之汲極飽和電流(ID S a t )成為遮罩電極偏壓(VO S )之函數;圖3係一圖表,揭示本發明之多數個實施例之崩潰電壓(BVD S S )成為遮罩電極偏壓(VO S )之函數;圖4係一圖表,揭示本發明之多數個實施例之來自圖2、3之ID S a t 及BVD S S 之間之相互關係;圖5揭示本發明之一實施例在一初期製造階段時之局部放大截面圖;圖6揭示本發明之一實施例在一稍後製造階段時之局部放大截面圖;圖7揭示本發明之一實施例在一更稍後製造階段時之局部放大截面圖;圖8揭示本發明之一實施例在另一製造階段時之局部放大截面圖;圖9揭示本發明之一實施例在又一製造階段時之局部放大截面圖;及圖10揭示本發明之一實施例在另一製造階段時之局部放大截面圖。
10...裝置
11...半導體材料區
12...基板
14...半導體層
17...n型區
18...主表面
23...渠溝
24...第三介電層
26、27...距離
31...主體區
33...電流攜載區
36...接觸區
41...第一介電層
42...第二介電層
43...閘極介電層
45...傳導通道
46、53...傳導層
48...第四介電層
51...第五介電層
57...填隙物閘極區
58...閘極結構
59...介電質填隙物
61...第六介電層
62...層間介電質(ILD)層
63...源極接觸層
66...汲極端
68...側壁
77...傳導性連接部分

Claims (20)

  1. 一種半導體裝置,包含:一基板,其具有一主表面,其中該基板包含一第一傳導性型式;一基座結構,其疊覆於該主表面之一部分;一傳導性材料,其沿著該基座結構之一側表面設置,以界定該半導體裝置之一第一傳導電極之一緣部;於該主表面內且鄰接於該第一傳導電極之一第二傳導性型式之一第一摻雜區,其中當該半導體裝置操作時,該第一摻雜區之一部分形成一通道區;於該第一摻雜區內之該第一傳導性型式之一第一電流攜載區;及鄰接於該主表面且接近於該第一摻雜區之一遮罩電極,其中該遮罩電極包含:於該主表面內之一渠溝;於該渠溝中之一介電層;及於該介電層上方之一傳導層。
  2. 如請求項1之半導體裝置,其中該基板包括一第一傳導性型式之一半導體層,其形成於該基板上方,其中該半導體層具有一較低於該基板者之摻雜濃度。
  3. 如請求項2之半導體裝置,尚包含該第一傳導性型式之一第二摻雜區,其形成鄰接於該第一摻雜區及該遮罩電極之間之該主表面。
  4. 如請求項1之半導體裝置,其中該基板包含矽鍺、矽鍺 碳、摻碳之矽或碳化矽之一者。
  5. 如請求項1之半導體裝置,其中該傳導層包含聚矽。
  6. 如請求項5之半導體裝置,其中該傳導層包含p型傳導性。
  7. 如請求項5之半導體裝置,其中該傳導層包含n型傳導性。
  8. 如請求項1之半導體裝置,其中該基板之一第二表面形成一第二電流攜載區。
  9. 如請求項1之半導體裝置,其中該遮罩電極耦合於該第一電流攜載區。
  10. 如請求項1之半導體裝置,其中該遮罩電極係建構以被獨立地偏壓。
  11. 如請求項1之半導體裝置,其中該基座結構包括:一第一介電層,其形成於該基板之頂表面上方;一第二介電層,其形成於該第一介電層上方;及一傳導層,其形成於該第二介電層上方,其中該傳導層耦合於該傳導性材料。
  12. 一種半導體裝置,包含:一半導體基板,其具有一第一傳導性型式之一半導體層,其中該半導體層具有一主表面;一第二傳導性型式之一主體區,其設置於該半導體層內,用於形成該半導體裝置之一通道;於該主體區內之該第一傳導性型式之一第一電流攜載區;鄰接於該通道之一閘極結構;及一遮罩電極,其形成於該半導體層內且鄰近於該主體 區,其中該遮罩電極包含:於該主表面內之一渠溝;於該渠溝中之一介電層;及於該介電層上方之一傳導層。
  13. 如請求項12之半導體裝置,該基板包含矽鍺、矽鍺碳、摻碳之矽或碳化矽之一者。
  14. 如請求項12之半導體裝置,其中該傳導電極包含n型聚矽。
  15. 如請求項12之半導體裝置,尚包含一基座結構,其形成於該主表面上方,及其中該閘極結構包括一控制電極,其沿著該基座結構之一側表面而形成。
  16. 如請求項12之半導體裝置,其中該基板包含第二傳導性型式。
  17. 一種用於形成一半導體裝置之方法,包含以下步驟:提供一半導體基板,其具有一第一傳導性型式之一半導體層,其中該半導體層具有一主表面;形成設置於該半導體層內之一第二傳導性型式之一主體區,用於形成該半導體裝置之一通道;形成該第一傳導性型式之一第一電流攜載區於該主體區內;形成鄰接於該主表面且鄰近於該通道之一閘極結構;及形成於該半導體層內且鄰近於該主體區之一遮罩電極,其中形成該遮罩電極包含: 形成於該主表面內之一渠溝;形成於該渠溝中之一介電層;及形成於該介電層上方之一傳導層。
  18. 如請求項17之方法,其中該提供該半導體基板之步驟包含提供包含矽鍺、矽鍺碳、摻碳之矽或碳化矽之一者的該半導體基板。
  19. 如請求項17之方法,其中該形成傳導電極之步驟包含形成一n型聚矽電極。
  20. 如請求項17之方法,其中該形成閘極結構之步驟包括形成一基座結構於該主表面上方,及形成一控制電極,其沿著該基座結構之一側表面而形成一控制電極。
TW095111820A 2005-04-25 2006-04-03 具遮罩電極之半導體裝置及其方法 TWI420675B (zh)

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Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010050374A (ja) * 2008-08-25 2010-03-04 Seiko Instruments Inc 半導体装置
US7915672B2 (en) * 2008-11-14 2011-03-29 Semiconductor Components Industries, L.L.C. Semiconductor device having trench shield electrode structure
US7989857B2 (en) * 2008-12-17 2011-08-02 Semiconductor Components Industries, Llc Electronic device including an insulating layer having different thicknesses and a conductive electrode and a process of forming the same
US7868379B2 (en) 2008-12-17 2011-01-11 Semiconductor Components Industries, Llc Electronic device including a trench and a conductive structure therein
US7902017B2 (en) * 2008-12-17 2011-03-08 Semiconductor Components Industries, Llc Process of forming an electronic device including a trench and a conductive structure therein
US8222695B2 (en) 2009-06-30 2012-07-17 Semiconductor Components Industries, Llc Process of forming an electronic device including an integrated circuit with transistors coupled to each other
US8124468B2 (en) 2009-06-30 2012-02-28 Semiconductor Components Industries, Llc Process of forming an electronic device including a well region
US8298886B2 (en) * 2010-02-08 2012-10-30 Semiconductor Components Industries, Llc Electronic device including doped regions between channel and drain regions and a process of forming the same
US8389369B2 (en) * 2010-02-08 2013-03-05 Semiconductor Components Industries, Llc Electronic device including a doped region disposed under and having a higher dopant concentration than a channel region and a process of forming the same
US8299560B2 (en) * 2010-02-08 2012-10-30 Semiconductor Components Industries, Llc Electronic device including a buried insulating layer and a vertical conductive structure extending therethrough and a process of forming the same
US9029945B2 (en) * 2011-05-06 2015-05-12 Cree, Inc. Field effect transistor devices with low source resistance
US9142662B2 (en) 2011-05-06 2015-09-22 Cree, Inc. Field effect transistor devices with low source resistance
US9673283B2 (en) 2011-05-06 2017-06-06 Cree, Inc. Power module for supporting high current densities
CN102263133B (zh) * 2011-08-22 2012-11-07 无锡新洁能功率半导体有限公司 低栅极电荷低导通电阻深沟槽功率mosfet器件及其制造方法
US9640617B2 (en) 2011-09-11 2017-05-02 Cree, Inc. High performance power module
US9373617B2 (en) 2011-09-11 2016-06-21 Cree, Inc. High current, low switching loss SiC power module
US8679919B2 (en) 2011-12-15 2014-03-25 Semiconductor Components Industries, Llc Electronic device comprising a conductive structure and an insulating layer within a trench and a process of forming the same
US8647970B2 (en) 2011-12-15 2014-02-11 Semiconductor Components Industries, Llc Electronic device comprising conductive structures and an insulating layer between the conductive structures and within a trench
US8541302B2 (en) 2011-12-15 2013-09-24 Semiconductor Components Industries, Llc Electronic device including a trench with a facet and a conductive structure therein and a process of forming the same
US8592279B2 (en) 2011-12-15 2013-11-26 Semicondcutor Components Industries, LLC Electronic device including a tapered trench and a conductive structure therein and a process of forming the same
US9818831B2 (en) 2013-03-11 2017-11-14 Semiconductor Components Industreis, Llc DMOS transistor including a gate dielectric having a non-uniform thickness
US9520390B2 (en) 2013-03-15 2016-12-13 Semiconductor Components Industries, Llc Electronic device including a capacitor structure and a process of forming the same
US9195132B2 (en) * 2014-01-30 2015-11-24 Globalfoundries Inc. Mask structures and methods of manufacturing
WO2015152904A1 (en) 2014-04-01 2015-10-08 Empire Technology Development Llc Vertical transistor with flashover protection
US9406750B2 (en) 2014-11-19 2016-08-02 Empire Technology Development Llc Output capacitance reduction in power transistors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6303961B1 (en) * 1998-04-29 2001-10-16 Aqere Systems Guardian Corp. Complementary semiconductor devices
TW523929B (en) * 2000-11-15 2003-03-11 Nec Corp Semiconductor device and method of manufacturing the same
TW533596B (en) * 2001-03-29 2003-05-21 Nec Corp Semiconductor device and its manufacturing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE456291B (sv) * 1980-02-22 1988-09-19 Rca Corp Vertikal mosfet-anordning innefattande en over kollektoromradet belegen skermelektrod for minimering av miller- kapacitansen och stromfortrengningen
KR20000051294A (ko) * 1999-01-20 2000-08-16 김덕중 전기적 특성이 향상된 디모스 전계 효과 트랜지스터 및 그 제조 방법
US6803317B2 (en) * 2002-08-16 2004-10-12 Semiconductor Components Industries, L.L.C. Method of making a vertical gate semiconductor device
US7045845B2 (en) * 2002-08-16 2006-05-16 Semiconductor Components Industries, L.L.C. Self-aligned vertical gate semiconductor device
DE10317381B4 (de) * 2003-04-15 2005-04-14 Infineon Technologies Ag Vertikaler Leistungstransistor mit niedriger Gate-Drain-Kapazität und Verfahren zu dessen Herstellung
US7397084B2 (en) * 2005-04-01 2008-07-08 Semiconductor Components Industries, L.L.C. Semiconductor device having enhanced performance and method
US7446354B2 (en) * 2005-04-25 2008-11-04 Semiconductor Components Industries, L.L.C. Power semiconductor device having improved performance and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6303961B1 (en) * 1998-04-29 2001-10-16 Aqere Systems Guardian Corp. Complementary semiconductor devices
TW523929B (en) * 2000-11-15 2003-03-11 Nec Corp Semiconductor device and method of manufacturing the same
TW533596B (en) * 2001-03-29 2003-05-21 Nec Corp Semiconductor device and its manufacturing method

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