TWI289336B - Nanocrystal memory component, manufacturing method thereof and memory comprising the same - Google Patents
Nanocrystal memory component, manufacturing method thereof and memory comprising the same Download PDFInfo
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- 239000002159 nanocrystal Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 15
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- 238000000231 atomic layer deposition Methods 0.000 claims abstract 2
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- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 claims description 4
- 150000002736 metal compounds Chemical class 0.000 claims description 3
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- 229910052797 bismuth Inorganic materials 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 239000012636 effector Substances 0.000 claims 1
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- 230000003993 interaction Effects 0.000 claims 1
- 230000002452 interceptive effect Effects 0.000 claims 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
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- 238000000137 annealing Methods 0.000 abstract description 7
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- 238000007796 conventional method Methods 0.000 description 2
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- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
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- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 229910052733 gallium Inorganic materials 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
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- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7881—Programmable transistors with only two possible levels of programmation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40114—Multistep manufacturing processes for data storage electrodes the electrodes comprising a conductor-insulator-conductor-insulator-semiconductor structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42324—Gate electrodes for transistors with a floating gate
- H01L29/42332—Gate electrodes for transistors with a floating gate with the floating gate formed by two or more non connected parts, e.g. multi-particles flating gate
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Description
1289336 九、發明說明: 【發明所屬之技術領域】 •本發明係關於—種記憶體裝置及其製法,尤係關於一 種具供存取電荷用之奈米晶粒之記憶體及盆 •【先前技術】 — 奈米晶粒記憶體係目前非揮發性記憶體發展中 二統快閃記憶體(⑽)者。傳統快閃記作 敎金氧半電晶體⑽S)的閘極和通道 除如傳統的金氧半場效電晶體(職 絕緣層外,再多增加一成有虱化 、·^、 ,予閘(n〇atlng gate),利用制 Ή注人或移走其内部儲存之f 、 傳統浮閘的設計,得刺w “⑹丁貝㈣存。然市 $利用存在於構成浮閘之摻雜之多s lPOJysillcon)中之電荷而導電 =隨氧化層U咖el Qxlde)之任—點有間下士方 電荷即難以儲存在i ’” ::书逆從時: 寸,穿隧氧化層勢必要子LV灌儿〇 但j。己丨思體尺 M ^ m ,, '專化,惟薄化將面臨到物理古 接牙㈣限制,而使薄化有其限度。 丨物理直 因而,遂有奈米晶粒記憶體之提 二 ,高操作電塵和讀取速度慢的缺且::述快閃 诫保留能力。不同於傳 、^ η較佳的記 浮問之設計,此種奈憶體以摻雜之多晶砂製作 米晶粒中,由於體之電荷係儲存於各個奈 層中之任-點有;:: 為彼此分離’故若穿遂氧化 流头,A ‘〜电逆狴時,只有靠近該點之電荷会0 *失其餘之電荷仍能保持於各/何會因而 们不木日日粒中,故能改善 ]895 5 1289336 傳統多晶矽浮閘設計中,穿隧氧化層中之任一點若有漏電 途徑時,電荷即難以儲存之缺點。 然而,在奈米晶粒之製作上,如何控制奈米晶粒的形 •成為現今技術所面臨最大的問題。舉例來說,若存在於奈 •米晶粒層之奈米晶粒過小或過於分散,則分佈有奈米晶粒 之奈米晶粒層則無法儲存足夠之電荷,故能影響氧化層下 之通道(channel)的電荷數相形減少,而造成判讀上的 困難;換言之,當儲存於奈米晶粒層之電荷數過少時,會 鲁造成有電荷已儲存於奈米晶粒層之啟始電壓(threshol d vo 11age )與沒有電荷儲存於奈米晶粒層之啟始電壓之差 值過小,以致無法分辨其是否有儲存電荷,進而無法做有 效的判讀。因此,在奈米晶粒的製程中,均冀望能夠有足 夠之奈米晶粒以儲存足夠之電荷,以使有電荷儲存與沒有 電荷儲存之啟始電壓差增加,進而使該記憶體能做有效的 判讀。 φ 目前用以容納更多電荷的做法,一般係採用濺鍍、直 接沉積或佈植一層很厚之金屬離子之方式,再予以退火而 於矽化物層中形成奈米晶粒。該製法之缺點在於奈米晶粒 於矽化物層中的高度位置不易控制,使奈米晶粒分佈散 亂,導致奈米晶粒與閘極間的能障寬度(barrier width) 不一,而使寫入或抹除之啟始電壓不易固定於同一水準。 換言之,若奈米晶粒為散亂分佈時,各個奈米晶粒距底層 基材或穿隧氧化層距離即不一致,以致奈米晶粒之能障 (energy barri er )皆不一樣。因而,當施加電壓時,部 18930 1289336 :奈米晶粒已儲存有電荷,而 荷;同樣地,在執行抹除摔 :“粒精未储存電 荷,但部份奈米晶粒卻尚部份奈米晶粒已移除電 誤,進而造成過度抹除現象/%荷’遂可能導致判讀錯 第1圖即顧示傳統奈平B^ 化層1 〇 4與蘭極i 〇 5間之卉、;曰曰、:己憶體中嵌置於閘極氧 106,其係以散亂而不方、教層107之多數奈米晶教 」105上時,每一個太半 工刀佈,當施加電壓至閘極 而會受到大小:二=:=極—不- :二在進行抹除時,為使所;易控 何去除,而可能也使較小能 丄不未曰曰粒⑽之電 因此,如何製造出言宓、之不米晶粒被過度抹除。 成為亟待解決之課題。^ a且均勻分佈之奈米晶粒層已 【發明内容】 種能使各個奈米晶粒之啟之主要目的即幻 度抹除現象發生,而能提 ϋ %堊均句分佈及避免過 件及其製法。 $能之一種奈米晶粒記憶體元 本發明之另一目λ袒# 之記憶體。 ”一種具等高分佈之奈米晶粒 為達上揭及其他之目的, 記憶體元件之製法 :月乃“、-種奈求晶粒 成長出-穿一以 分層與介電分層於該穿,化層二 鑒於上述習知技術之 供 種能使各個奈来曰φή ^ 、’發明之主要目的即在提 18930 7 1289336 —刀層與介電分層進行高溫退火,以使哕 八 、成多數之奈米曰杈日ώ n+ ",包刀層、.,口晶而形 曰粒為耸: 且由同一導電分層所結晶形成之奈米 佈;並令經高溫退火之該導電分層與介電: "為";整合層;以及於該整合層上形成-閑極。層 %分^==晶粒記憶體元件之製法’係使由'任1 太乎曰曰米晶粒為相同高度之分佈,而使各 之啟始電壓分佈均勻,且能防止:产=使:個务、^ _棱升記憶體之效能。, 而 ·' 本發明並提供一種奈米晶粒記憶體元件’係包括 |材,形成於該基材上之穿隧氧仆 土 •卜夕敕人爲“ .牙、虱化層,形成於談穿隧氧化層 -m整合層係包括介電材料與分佈於該吩電材 中之由複數個位於同一平面上之奈米晶粒所構成之夺 K米晶粒組群,使同一組群中之奈米晶粒與該穿隨氧化>間 …巨離均相同,而具有,同之能化 •層上之閘極。.… · 口 本赛明復提供-種奈米晶粒記憶體元件之記憶體,係 包括-基材;形成於該基材上並間隔開一適當距離之源極 與汲極;形成於該基材位於源極與沒極間之位置上的穿隨 氧化層;形成於該穿隨氧化層上之整合層,該整合層係包 括介電材料與,分佈於該介電材料中之由複數個位於同一 平面上之奈米晶粒所構成之奈米晶粒組群,使同—組群中 之奈米晶粒與該穿隨氧化層間之距離均相同,而具有相同 之能障寬;以及形成在該整合層上之閘極。 18930 1289336 【貫施方式】 以下茲以較佳之實施例配 提供之奈米晶粒記_體元附圖式,评述本發明所 Ί 牛之記憶體。 。牛及八‘法及具有該記憶體元 •第2Α至2Ε圖係用以說明 件之製法。 之示未日日粒記憶體元 如第2Α圖所示’首先,係以如 羽 一由石夕材料構成之基材2G上成長—穿、之自知方式於 隧氧化層21得為石夕氧化物或其他八^乳化層2卜該穿 形成厚度則宜為約5 : 广/料所構成,而其 方式乃運用習知技/曰甘形成該穿隨氧化層Μ之 不予贅述。 'a料材料亦為習知者,故在此 再而如弟2β圖所示,在今空 習知之原子層化學氣心積法在 化層上之各層沉積物之厚度,先行沉積八二牙随乳 於該介電分層上沉稽一展道 、ί )丨电勿層,再 再,a 層,接著於該導電八声卜 再/儿知另一層介電分層,以此交秩 蜍电刀層上 之導電分層220與介電分層221:使任沉積出多層 均藉-介電分層221隔開;在本實施:導電分層220間 有三層之導電分層220與三層之介恭=中,如圖所示,設 須知,該導電分層22〇與介電分層刀六層”1交互疊置。 全視記憶體元件於設計上之需求而定,置的數量完 限制。此外,沉積穿隨氧化層上命㈣增減而無特定 方法並不限於原子層化學氣相1 :分層與導電分層之 曰曰 知亦可採用分子束蟲曰 18930 9 1289336 法(MBE)、化學氣相沉積(CVD)、物理氣相沉積侧) 或其他適用方法。同時,該介電分層221之材料得選自如 氧化石夕等習用之介電材料,而該導電分層2 2 0則可由如金 屬或金屬化合物成份而成者,如鎳、金、銀、白金等或氮 化鈦(ΉΝ)寺金屬化合物,亦可如石夕化鍺之石夕化物材料推 雜半導體成份而成者,料導體成份得為如魏鎵 )、硫化錦(CdS)、石申化鎵(GaAs )或石申化銦(Inp ) 寻m及乂族疋素合成之化合物或n及^族元素合成之 :匕:物:7為其他類似之成份或化合物,由吻^ 知者,故在此不另為贅述。 如第2C圖所示,對該交互疊置之導電分層22〇及八 電分層221進行如高溫退火埶:兮曾" 分層㈣中之㈣匕衣私以使各該導電 曰 〆成刀、、、口日日而形成多數個奈米 所示。於該整合層22中,自同-導電分^ 之奈米晶粒220a係位於同-平面而構成一 221間隔開,故任 二:::,均為-介電分層 出之大半曰4 上下相對之自導電分層220結晶形成 所分;群亦為構成該介電分層221之介電材料 咖=/11’位於同—奈米晶粒組群中之各奈米晶粒 仆思门刀,使各奈米晶粒220a與位於其下方穿 陡乳化層之21間之距離均相同,而呈 牙 故能令製成之記情體且有& 、 水月匕P早見, 午# 、有均勻分佈之啟始電壓,且銥狀^ 18930 1289336
800°C^ 1 200°CV 用以形成該奈米晶粒2 2 〇 a之方法 亦可,用氮化法或其他適用方法。不以冋概退火, :後,如2E圖所示,於該整合層以上形成一間極 所使以如化學氣相沉積法等習知方式形成, 形成後,/ 爹雜多晶石夕等之習用材料。該閘極23 y , P兀成本發明之記憶體元件的製程。 再而’如第3圖所示者,為整合有 之記憶體2。如圖所示,該 ^ ^兀件 ^ ^ ^ 豕°己2係包括有基材20,形 21 i:H2°上之穿隨氧化層21,形成於該穿隨氧化詹 王口層22 ’形成於該整合層22上之閘極23,以 ^於該基材2〇中而位於該㈣氧化層Μ兩 之 =4與源極25;其中,該整合層22中,如咖 =:複數個奈米晶粒22Ga,該奈米晶粒⑽係由位於 二'I者構成一奈米晶粒組群,而每-奈米晶粒220a r : U SB粒组群中’且位於較下方之奈米晶粒組 I、較上方之奈米晶粒組群係間隔開一距離,而呈 置之形態。 惟以上所述之實施例,係用 ’卞用以5兄明本發明之原理及其 架構。而非甩以限定本發明之奋 ^ π〈 J戶、施摩巳田哥。於本發明之宗 旨和範_下,本發明涵苗所古榮 , η〜瓜所有寺效之修正以及替代,其定 義於下述之專利申請範圍。 【圖式簡單說明】 第1圖係傳統奈米晶粒記億體中之㈣晶粒層之剖 18930 11 1289336 面示意圖; 第2A圖係說明於基材上成長一層穿隧氧化層; 第2B圖係相似於第2A圖之剖面示意圖,其說明於穿 隧氧化層之上多次交互沉積導電分層及介電分層; 第2C圖係相似於第2B圖之剖面示意圖,其說明進行 如高溫退火之熱氧化製程·, 第2D圖係相似於第2C圖之剖面示意圖,其說明導電 分層結晶而形成多數個奈米晶粒; Φ 第2E圖係相似於第2D圖之剖面示意圖,其說明進行 閘極之製程;以及 第3圖係本發明之奈米晶粒記憶體之剖面示意圖。 【主要元件符號說明】 104 閘極氧化層 105 閘極 106 奈米晶粒 107 奈米晶粒層 ^ 20 基材 21 穿隧氧化層 22 整合層 220 導電分層 220a 奈米晶粒 221 介電分層 23 閘極 24 汲極 25 源極 12 18930
Claims (1)
1289336 十、申請專利範園·· 一種奈米晶粒記憶體元件之製法 括列助 於基材上 ^ 你匕括下列步驟 ^ 成長一牙隧氧化層;於該穿隧氧化屑卜夕Α >…分層; θ上夕- 人父互沉積導電分層及介電 _ α ‘笔分層形成出複數個曰 、, 電分層盥介命八显私 不木日日叔,亚使該導 电分層整合形成一整合層,i 蛤龟分層形成出之奈米曰 -中由同— —奈米晶粒组群,使每:太半、;同—平面而構成 ,均為等高分佈;以及示未晶粒組群中之奈米晶粒 於該整合層上形成一閘極。 :申:專利範圍第!項 法,其中,多次交互、文并道千、 月且兀件之製 係以原子層沉積方式為之。 )丨电刀層之步 如申凊專利範圍第1 法,其中,多次交互粒記憶體元件之製 係以分子^法為之介電分層之步 如申請專利範圍第·!項 卜 法,其中,多次交互奸道干 肢7°件之製 係以化學氣相沉積法為之。 θ次’丨戈刀層之步 如申請專利範圍第2 # , 貞之奈朱晶粒記憶體元技 法,其中’多次交互沉積導電分層及介電::之製係以物理氣相沉積法為之。 曰 刀層之步‘如申請專利範圍第1 員之示米晶粒記憶體元件制 2· 3. 4· 5· 6. 18930 13 i 獨 336 法,其中,令該導電分; 驟係以熱氧化方式曰 >成出複數個奈米晶粒之步 7.如申請專利範圍第t::大+ 法,苴中,該埶不水晶粒記憶體元件之製 §如由飞化方式係高溫退火。 .如申凊專利範圍f!項 法,其中,該介恭八E /卡日日粒記憶體元件之製 9 . 书刀g係由介電材料所制忐去 9.如申請專利範圍第8之 朴所衣成者。 法,1中,該介不米晶粒記憶體元件之製 .如申請專利範圍第丨jg 法,其中’任二上下相米晶粒記憶體元件之製 導電分層間之介電導電分層係由一炎設於該 n ^ ^ 书刀層所分隔開。 .如申請專利範圍第丨碩之太 法,其中,該導電分芦乂記憶體元件之製 12 . ώ 电刀層係由金屬成分而成者。 13.如申心真牙刀層係由金屬化合物成分而成者。 法申5月專利_第1項mm體元件之製 八二中x ‘电刀層係由矽化物材料摻雜半導體成 刀而形成者。 14’-種奈米晶粒記憶體元件,係包括: 基材; 形成於該基材上之穿隧氧化層; 形成於該穿隧氡化層上之整合層,其中,該整合 1中分佈有複數個奈米晶粒,使位於同—平面之奈米 B曰粒構成一奈米晶粒組群,且每一奈米晶粒均位於一 18930 14 1289336 該奈米晶粒組群中,同時,任二 組群均為形成玆軚A ® —人^T才目對 < 奈米 板 晶 以及 組群均為形成該整合層之介電 / 毛材枓所隔開 形成於該整合層上之閘極。 Ϊ5·如申請專利範圍第14項之 .中妆參n大丄 不未日日粒記憶體元件,j: 中位於同一奈米晶粒組群中 ^ 6化:間之距離均相同,故能等高分佈於該整 :申請ί利範圍第14項之奈米晶粒記憶體元v,^ 中,忒牙隧乳化層與整合層之 ’、 料所製成者。 电材枓係為氧化矽村 17· —種奈米晶粒記憶體,係包括: 基材; 形成於該基材上並間隔開一 極; ι田距#之源極與沒 形成於該基材上之穿隧氧化層; 形成於該穿隨氧化層上之整:層,其中,兮效人 層中分佈有複數個奈米晶粒 /正口 ,曰柄媸士一*, 使位於同一平面之奈米 :12 粒組群’且每-奈米晶粒均位於- 忒示米晶粒組群中,同時,任二 έθ m ^ ^ JL —上下相對之奈米晶粒 、,且群均為形成該整合層之介電材料所隔開:以及 形成於該整合層上之閘極。 18·如申請專利範圍第17項之奈米晶粒記憶體,並中位 於同一奈米晶粒組群中之奈求晶粒與該穿隨氧化層 間之距離均相同,故能等高分佈於該整合層中。 19.如申請專利範圍第17項之奈米晶粒記憶體,盆中, 18930 15 1289336 該穿隧氧化層與整合層之介電材料係為氡化矽材料 所製成者。
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Priority Applications (2)
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TW094138938A TWI289336B (en) | 2005-11-07 | 2005-11-07 | Nanocrystal memory component, manufacturing method thereof and memory comprising the same |
US11/495,528 US20070105316A1 (en) | 2005-11-07 | 2006-07-31 | Nanocrystal memory element, method for fabricating the same and memory having the memory element |
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TW094138938A TWI289336B (en) | 2005-11-07 | 2005-11-07 | Nanocrystal memory component, manufacturing method thereof and memory comprising the same |
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TWI270168B (en) * | 2005-12-05 | 2007-01-01 | Promos Technologies Inc | Method for manufacturing non-volatile memory |
KR100791007B1 (ko) * | 2006-12-07 | 2008-01-04 | 삼성전자주식회사 | 금속 실리사이드 나노 결정을 구비하는 비휘발성 메모리소자, 상기 금속 실리사이드 나노 결정 형성 방법 및 상기비휘발성 메모리 소자의 제조방법 |
US7723186B2 (en) * | 2007-12-18 | 2010-05-25 | Sandisk Corporation | Method of forming memory with floating gates including self-aligned metal nanodots using a coupling layer |
US8193055B1 (en) | 2007-12-18 | 2012-06-05 | Sandisk Technologies Inc. | Method of forming memory with floating gates including self-aligned metal nanodots using a polymer solution |
US8383479B2 (en) | 2009-07-21 | 2013-02-26 | Sandisk Technologies Inc. | Integrated nanostructure-based non-volatile memory fabrication |
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US6469343B1 (en) * | 1998-04-02 | 2002-10-22 | Nippon Steel Corporation | Multi-level type nonvolatile semiconductor memory device |
KR100294691B1 (ko) * | 1998-06-29 | 2001-07-12 | 김영환 | 다중층양자점을이용한메모리소자및제조방법 |
JP2000200842A (ja) * | 1998-11-04 | 2000-07-18 | Sony Corp | 不揮発性半導体記憶装置、製造方法および書き込み方法 |
US6487121B1 (en) * | 2000-08-25 | 2002-11-26 | Advanced Micro Devices, Inc. | Method of programming a non-volatile memory cell using a vertical electric field |
US20040248381A1 (en) * | 2000-11-01 | 2004-12-09 | Myrick James J. | Nanoelectronic interconnection and addressing |
US7154140B2 (en) * | 2002-06-21 | 2006-12-26 | Micron Technology, Inc. | Write once read only memory with large work function floating gates |
US6690059B1 (en) * | 2002-08-22 | 2004-02-10 | Atmel Corporation | Nanocrystal electron device |
US6995433B1 (en) * | 2004-03-02 | 2006-02-07 | Advanced Micro Devices, Inc. | Microdevice having non-linear structural component and method of fabrication |
US7355238B2 (en) * | 2004-12-06 | 2008-04-08 | Asahi Glass Company, Limited | Nonvolatile semiconductor memory device having nanoparticles for charge retention |
US20060166435A1 (en) * | 2005-01-21 | 2006-07-27 | Teo Lee W | Synthesis of GE nanocrystal memory cell and using a block layer to control oxidation kinetics |
US7361567B2 (en) * | 2005-01-26 | 2008-04-22 | Freescale Semiconductor, Inc. | Non-volatile nanocrystal memory and method therefor |
US7309650B1 (en) * | 2005-02-24 | 2007-12-18 | Spansion Llc | Memory device having a nanocrystal charge storage region and method |
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US20070105316A1 (en) | 2007-05-10 |
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