TW506083B - Method of using nano-tube to increase semiconductor device capacitance - Google Patents
Method of using nano-tube to increase semiconductor device capacitance Download PDFInfo
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- TW506083B TW506083B TW090129368A TW90129368A TW506083B TW 506083 B TW506083 B TW 506083B TW 090129368 A TW090129368 A TW 090129368A TW 90129368 A TW90129368 A TW 90129368A TW 506083 B TW506083 B TW 506083B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002071 nanotube Substances 0.000 title claims abstract description 26
- 239000004065 semiconductor Substances 0.000 title claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000001459 lithography Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 2
- 239000000243 solution Substances 0.000 claims 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 238000000137 annealing Methods 0.000 claims 1
- 239000007943 implant Substances 0.000 claims 1
- 238000005468 ion implantation Methods 0.000 claims 1
- 229910001453 nickel ion Inorganic materials 0.000 claims 1
- 229920002120 photoresistant polymer Polymers 0.000 claims 1
- 239000002002 slurry Substances 0.000 claims 1
- 239000003990 capacitor Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- CGYAAZGZXOWPNB-UHFFFAOYSA-L lithium nickel(2+) carbonate Chemical compound [Ni+2].C([O-])([O-])=O.[Li+] CGYAAZGZXOWPNB-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/02—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using elements whose operation depends upon chemical change
- G11C13/025—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using elements whose operation depends upon chemical change using fullerenes, e.g. C60, or nanotubes, e.g. carbon or silicon nanotubes
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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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0021—Auxiliary circuits
- G11C13/0033—Disturbance prevention or evaluation; Refreshing of disturbed memory data
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
- H01L28/82—Electrodes with an enlarged surface, e.g. formed by texturisation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/221—Carbon nanotubes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
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- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Semiconductor Memories (AREA)
- Semiconductor Integrated Circuits (AREA)
- Carbon And Carbon Compounds (AREA)
Description
506083 五、發明說明(1) 【發明領域】 本發明是有關於一種應用奈米管(Nanotube)增加半 導體元件電容之方法,且特別是有關於一種應用奈米管增 加動悲隨機存取記憶體(Dynamic Random Access Memory,DRAM )電容之方法。 【發明背景】 習 Access 容所組 所佔的 才能夠 決上述 面積以 之方法 疊層( 提高電 制,故 容電極 體(Dynamic Random 係由一電晶體及一電 晶體愈做愈小時,電容 但是電容值又必須夠大 的電壓。故而,為了解 用「增加電容電極的表 種增加電容電極表面積 (trench )』及『往上 ,上述2種方法雖然可 當别微影技術的物理限 單又有效地大幅提高電 的重要課題之一。
知以來
Memory,以下簡稱為DRAM〕 成,隨著科技的進步,當電 底面積也被要求必需縮:, 儲存足夠的電荷來維持固定 之問題,業界日^I 揾古雷六佶 則主要是採 k问電谷值」之方式,而此 主Λ又、可分為『往下挖溝槽 stack)』等2種方式。然而 容電極的面積,作 效果有限。因此:ΓΓ限於 1 u此,如何能簡 的面積,乃當前業界所研究 【發明概要】 有鑑於此,本發明 管(Nano tube )增力口半 基板,包括下列步驟: 的主要目的就是提供一種應用奈米 導體元件電容之方法,其適用於一
0356-7000TWF;03900052;pe t e r1i ou.p t d 第4頁 506083 五、發明說明(2) 形成一奈米管於上述觸媒區域; 形成一第一介電層於上述奈米管及上述基板之表面; 以及 形成一電極層於上述第一介電層之表面。 藉由上述本發明之方法,就可在不需要增加電容所佔 的底面積之情況下,簡單地利用奈米管圓柱的側表面來增 加電容電極的面積,而達到大幅度地提昇電容值之效果, 且上述方法製程簡單,能大幅降低製造成本。 【圖式簡單說明】 第1 a圖〜第1 f圖係表示本發明應用奈米管增加半導體 元件電容之方法的示意說明圖。 符號說明】 1 0〜基板 1 2〜觸媒區 2 0〜奈米碳管 3 0〜金屬層 40〜第一介電層 5 0〜電極層 60〜第二介電層 【發明之詳細說明】 為讓本發明之上述和其他目的、特徵、和優點能更明
0356-7000TWF;03900052;pe t e r1i ou·p t d 第5頁 五、發明說明(3) 顯易懂,下" 細說明如下:寺+出車乂仏貝知例,並配合所附圖式,作詳 【實施例] 12。定Ϊ出觸a::’於基板U之表面定義出觸媒區 法:第- =:: ΐ方式可使用例如下列3種方 述基板10表面之二=屬觸媒離子溶液(未圖示)於上 而既定區m卜即第1a圖中所示的觸媒區12, :丁::火步驟,以使上述所塗屬U "之後再施 成奈米級的觸媒堆,就可定義出j = f觸媒離子溶液團聚 媒離子溶液可使用 某區1 2。上述之金屬觸 液、石肖酸鐵溶液等1二如:石肖酸鎳溶 12,而既定區域以夕〕弟1a圖中所示的觸媒區 屬觸媒’就可定義出觸媒區12。心入金 媒声Γ去同-、 币一係先 >儿積一金屬觸 w (未圖不)於上述基板1G ^觸 定圖荦之氺卩日恩,, ^ 接者形成一具有既 第此既定圖案係用以於後述步驟中定義出 弟la圖中所示的觸 丨於上 義出 利闲主土 W W< 至屬觸媒層之表面,再 貝光斂衫v驟來定義出如第1 a圖中所+ Μ ^ ϋ ρΩ 藉由卜诂q括七* 口 Y所不的觸媒區1 2 〇 至屬觸媒則可使用例如··鎳、鐵等。 管20其Ϊ長所示,於上述觸媒區12處成長奈米碳 (CVD法)在—既定電衆條件下通入—裂解氣體
03 56-7000TWF;03900052;pe t e r1i ou.p t d 506083 五、發明說明(4) 示)於上述觸媒區丨2,就可於上 ?圖戶:示的奈米碳管20。上述裂解 (C 4 )、乙烷(c2h6 )或二氧化碳 接著,於上述奈米碳管20及上 第一 ^電層40。在此處,為了更進 表面積並同時增進奈米碳管2 〇與第 力’亦可如第1 c圖所示般,先於上 成一金屬層3〇,再如第Id圖所示般 沉積上述第一介電層40。形成上述 例如:賤錢法等。 最後,如第1 e圖所示,於上述 積一電極層5 0。 ; 藉由上述方法,由於奈米碳管 分子管,並具有接近金屬的導電性 的直徑可以有微米級的高度),故 化高的半導體元件電容電極上(特 記憶體電容電極上)來當作電容的 需要增加電容所佔的底面積之情況 米碳管圓柱的側表面來增加電容電 幅度地提昇電容值之效果,且若應 體上,還能因電容值大幅度提昇而 的穩定度。 又,如第1 f圖所示,上述本發 應用狀況所需,再於上述電極層5 0 觸媒區1 2處成長出如第 氣體可使用例如:甲烧 (C〇2 )氣體等。 & 述基板1 0之表面沉積一 一步增加奈米碳管2 〇之 w電層4 0之間的附著 述奈米碳管20之表面形 ,於此金屬層30之表面 金屬層30之方式可使用 第 係奈 及大 將此 別是 底電 下, 極的 用於 有助 介電層40之表面 米級 的1¾ 種奈 長在 極棒 簡單 面積 動態 於提 沉 直徑的圓杈碳 覓比(奈米級 米官長在集積 動態隨機存取 時,就可在不 地利用大量奈 ,而達到能大 隨機存取記憶 昇記憶體資料 明之方法亦可對應實際 之表面全面性地沉積—
506083 五、發明說明(5) 第二介電層60,且必要時並可進一步對上述第二介電層60 施行一平坦化步驟。 雖然本發明已以較佳實施例揭露如上,然其並非用以 限定本發明,任何熟習此技藝者,在不脫離本發明之精神 和範圍内,當可作各種之更動與潤飾,因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。
0356 - 7000TWF; 03900052; pe t e 1· 1 i ou. p t d 第8頁
Claims (1)
- 506083 六、申請專利範圍 1 · 一種應用奈米管增加半導體元件電容之方法,適用 於一基板,包括下列步驟: 定義一觸媒區域於上述基板之表面; 形成一奈米管於上述觸媒區域; 形成一第一介電層於上述奈米管及上述基板之表面; 以及 形成一電極層於上述第一介電層之表面。 2. 如申請專利範圍第1項所述之應用奈米管增加半導 體元件電容之方法,其中更包括以下步驟: 形成一金屬層於上述奈米管及上述第一介電層之間。 3. 如申請專利範圍第1項所述之應用奈米管增加半導 體元件電容之方法,其中更包括以下步驟: 全面性地形成一第二介電層於上述電極層之表面。 4. 如申請專利範圍第3項所述之應用奈米管增加半導 體元件電容之方法,其中更包括以下步驟: 對上述第二介電層施行一平坦化步骤。 5. 如申請專利範圍第1項所述之應用奈米管增加半導 體元件電容之方法,其中上述定義觸媒區域之步驟係包括 以下步驟: 塗佈一金屬觸媒離子溶液於上述基板表面之一既定區 域;以及 施行一退火步驟。 6. 如申請專利範圍第5項所述之應用奈米管增加半導 體元件電容之方法,其中上述金屬觸媒離子溶液為鎳的離0356-7000TWF;03900052;pe t e r1i ou.p t d 第9頁 506083 六、申請專利範圍 子水溶液或鐵的離子水溶液。 7 ·如申請專利範圍第1項所述之應用奈米管增加半導 體元件電容之方法,其中上述定義觸媒區域之步驟為: 藉由離子佈植法於上述基板表面之一既定區域植入一 金屬觸媒。 8. 如申請專利範圍第7項所述之應用奈米管增加半導 體元件電容之方法,其中上述金屬觸媒為鎳或鐵。 9. 如申請專利範圍第1項所述之應用奈米管增加半導 體元件電容之方法,其中上述定義觸媒區域之步驟係包括 以下步驟: 形成一金屬觸媒層於上述基板之表面; 形成一光阻層於上述金屬觸媒層之表面;以及 施行一微影步驟。 1 0.如申請專利範圍第9項所述之應用奈米管增加半導 體元件電容之方法,其中上述金屬觸媒層係由鎳或鐵所構 成。 11.如申請專利範圍第9項所述之應用奈米管增加半導 體元件電容之方法,其中上述微影步驟為黃光微影步驟。 1 2.如申請專利範圍第1項所述之應用奈米管增加半導 體元件電容之方法,其中上述形成奈米碳管之步驟為: 藉由化學氣相沉積法(CVD法)在一既定電漿條件下 通入一裂解氣體於上述觸媒區域。 1 3.如申請專利範圍第1 2項所述之應用奈米管增加半 導體元件電容之方法,其中上述裂解氣體係擇自甲烷、乙0356-7000TWF;03900052;pe t e r11ou.p t d 第10頁 506083 六、申請專利範圍 烷及二氧化碳中之一者。 1_11_ 第11頁 0356-7000TWF;03900052;peterliou.ptd
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TW090129368A TW506083B (en) | 2001-11-28 | 2001-11-28 | Method of using nano-tube to increase semiconductor device capacitance |
US10/122,188 US6759305B2 (en) | 2001-11-28 | 2002-04-16 | Method for increasing the capacity of an integrated circuit device |
JP2002181128A JP3652672B2 (ja) | 2001-11-28 | 2002-06-21 | 集積回路素子の容量を増加させる方法 |
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US6855647B2 (en) * | 2003-04-02 | 2005-02-15 | Hewlett-Packard Development Company, L.P. | Custom electrodes for molecular memory and logic devices |
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TWI401209B (zh) * | 2006-06-30 | 2013-07-11 | Hon Hai Prec Ind Co Ltd | 場發射元件及其製備方法 |
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US20030100189A1 (en) | 2003-05-29 |
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