JPH10335632A - 電気コンタクトおよびその形成方法 - Google Patents
電気コンタクトおよびその形成方法Info
- Publication number
- JPH10335632A JPH10335632A JP10153781A JP15378198A JPH10335632A JP H10335632 A JPH10335632 A JP H10335632A JP 10153781 A JP10153781 A JP 10153781A JP 15378198 A JP15378198 A JP 15378198A JP H10335632 A JPH10335632 A JP H10335632A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- contact
- forming
- solution
- semiconductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 14
- 239000004065 semiconductor Substances 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims abstract description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 229910000927 Ge alloy Inorganic materials 0.000 claims description 7
- BYDQGSVXQDOSJJ-UHFFFAOYSA-N [Ge].[Au] Chemical compound [Ge].[Au] BYDQGSVXQDOSJJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052732 germanium Inorganic materials 0.000 claims 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000004254 Ammonium phosphate Substances 0.000 abstract description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 abstract description 3
- 235000019289 ammonium phosphates Nutrition 0.000 abstract description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004299 exfoliation Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- -1 SiO 2 Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 150000002343 gold Chemical class 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/02—Bonding areas ; Manufacturing methods related thereto
- H01L24/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L24/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/30—Acidic compositions for etching other metallic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
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- H01L2224/05001—Internal layers
- H01L2224/05075—Plural internal layers
- H01L2224/0508—Plural internal layers being stacked
- H01L2224/05083—Three-layer arrangements
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- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
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- H01L2224/05001—Internal layers
- H01L2224/05099—Material
- H01L2224/051—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2224/05138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/05155—Nickel [Ni] as principal constituent
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- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
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- H01L2224/051—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2224/05163—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than 1550°C
- H01L2224/05166—Titanium [Ti] as principal constituent
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- H01L2224/0554—External layer
- H01L2224/05599—Material
- H01L2224/056—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2224/05638—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/05644—Gold [Au] as principal constituent
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- Condensed Matter Physics & Semiconductors (AREA)
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- Electrodes Of Semiconductors (AREA)
- Formation Of Insulating Films (AREA)
Abstract
コンタクト形成方法を提供する。 【解決手段】 誘電層27が半導体裏面24と電気コン
タクト26との間に形成され、コンタクト26の接着を
促進する。誘電層27は、洗浄動作を行い、その後で化
学的酸化を行うことにより形成される。
Description
さらに詳しくは、半導体処理技術に関する。
来、半導体産業では、電気的コンタクトは半導体ウェハ
または半導体ダイの裏側に形成された。このようなコン
タクトを形成するための技術の1つは、半導体ウェハの
裏側をまず研磨して半導体ウェハを薄くするあるいは厚
みを小さくすることである。研磨動作中は、半導体ウェ
ハ前面の能動装置は保護のための保護テープにより覆わ
れる。研磨動作の後で、テープは除去される。その後、
半導体ウェハの裏側がフッ化水素酸によりエッチングさ
れて、その表面を電気的コンタクトとして供する準備が
行われる。次に、チタン,ニッケルおよび金−ゲルマニ
ウム合金の連続的デポジションを用いて、コンタクト材
料が付着される。
トの剥離である。コンタクトが、下にある半導体表面に
接着せずに、半導体表面から剥離することがよく起こ
る。この剥離により結果的に欠陥装置になり、製造コス
トが上がる。
が得られるコンタクト形成方法を有することが望まし
い。
を形成する方法の段階のいくつかを示す流れ図10であ
る。図2は、図1に示される方法により処理される半導
体ウェハ20の一部分の断面図である。ウェハ20は、
上面または前面23と底面または裏面24とを有する基
板21を具備する。流れ図10に示される薄化動作に先
立ち、半導体ダイに分割される能動半導体装置22を前
面23上に有するように、半導体ウェハ20を処理す
る。保護テープ(図示せず)が前面23に貼られて、装
置22を保護する。その後、図1に示されるように裏面
24において薄化動作が実行されて、ウェハ20の厚み
を小さくする。通常、薄化動作とは半導体技術者には周
知の研磨動作である。
をその後の電気コンタクト26としての用途に備えて準
備する。表面洗浄動作には、バルク・シリコン除去段
階,ステイン・エッチングおよび剥離動作が含まれる。
バルク・シリコン除去段階は、硝酸,フッ化水素酸およ
び酢酸を含む溶液に裏面24を晒す段階を含む。通常、
濃度は約5:2:2で、晒し時間は約15ないし50秒
で、好ましくは約30秒である。晒し時間も濃度も可変
である。この動作は、薄化動作により起こる裏面24上
の損傷を除去する。このバルク・シリコン除去により、
一般に約10ミクロン未満が裏面24から除去される。
はSiO ,SiO2,SiO3,Si2OならびにSiHXなど種々のシリ
コン酸化物を有する。通常、これら材料が種々に結合し
て、暗色の表面を形成し、これを一般にステインと呼
ぶ。このステインは、通常は、後に付着されるコンタク
ト材料の付着力を確保するために除去しなければならな
い。その結果、裏面24を水,過酸化水素およびフッ化
アンモニウムを10:1:1ないし8:1:1の割合で
含む溶液に約15分間晒すことにより、ステイン・エッ
チング動作が実行される。このステイン・エッチング除
去動作により、ある程度のシリコン酸化物が表面上に残
ることがある。その結果、裏面24をフッ化アンモニウ
ムとフッ化水素とを15:1ないし20:1の割合で含
む溶液に約1分ないし4分、好ましくは2分間晒すこと
により酸化物剥離動作が実行される。
二酸化シリコン層27を裏面24上に形成する。通常、
層27は裏面24全部を覆うが、図2に図示されるよう
にその一部分に限られることもある。半導体装置22は
表面23上に形成されるので、層27が蒸着またはデポ
ジション法により形成されると、装置22が損傷を受け
ることがある。その結果、化学量論的二酸化シリコン層
27を形成するために化学的酸化を利用する。裏面24
は、約80:1ないし100:1の濃度を有する水とフ
ッ化水素の溶液に約10秒ないし90秒、好ましくは3
0秒間晒される。この溶液は希釈液であるので、半導体
ウェハ20の前面を損傷することはない。この溶液が、
前動作の後で裏面24上に形成された可能性のある酸化
物をすべて除去する。裏面24上に形成された可能性の
ある酸化物がすべて除去される限り、晒し時間と濃度と
を変えることができる。その後、裏面24を、濃度が
8:1:1ないし10:1:1である水,無水リン酸ア
ンモニウム(NH4H2PO4)および過酸化水素の溶液に、約
1ないし10分間晒すことにより酸化物成長段階が実行
される。この溶液が裏面24上に化学量論的二酸化シリ
コン層27を成長させる。層27の厚みは、以下に説明
する電流に対する抵抗を最小限に抑えるために約1ナノ
メータ以下に制限される。層27が所望の厚みを得る限
り、時間と濃度とを変えることができる。
上にコンタクト26が形成され、下に存在する半導体ウ
ェハに対する電気的コンタクトを形成する。しかし、二
酸化シリコンは絶縁物であることが当業者には一般的に
知られており、電気的コンタクトを形成するために絶縁
物を用いることはない。その結果、コンタクト材料と半
導体表面との間に化学量論的二酸化シリコンなどの誘電
性物質を形成することは、当業者の通常の教義には反
し、予測のつかない結果を招く。層27は、その後に形
成されるコンタクト26がウェハ20に確実に接着する
ようにして、それにより製造コストを下げるのに役立
つ。しかし、層27の厚みを最小限に抑えても、依然と
して電流のための低抵抗経路ができる。
ウム合金層を当業者には周知の技術を利用して付着する
ことにより、化学量論的二酸化シリコン層27にコンタ
クト材料が付着される。次に、金−ゲルマニウム合金の
一部を金に転化することによりコンタクト上にキャップ
層が形成される。この金のキャップ層は、金−ゲルマニ
ウム合金の酸化を防ぎ、それによってコンタクトと他の
外部電気装置との間に良好な電気コンタクトが形成され
るのを容易にする。キャップ層は、半導体ウェハまたは
コンタクト26を、脱イオン水,無水リン酸アンモニウ
ムおよび過酸化水素を約93:5:2ないし70:2
0:10,好ましくは85:10:5の濃度で含む溶液
に、約30秒間晒すことにより形成される。この動作に
より、金−ゲルマニウム合金の一部分が酸化されて、酸
化ゲルマニウムが形成され、この酸化ゲルマニウムが溶
液中に溶けて、コンタクトの表面上に金を残す。金キャ
ップ層の厚みは、通常70ないし80ナノメータで、一
般的には100ナノメータ未満である。この厚みが、下
に存在する金−ゲルマニウムの酸化を防ぎ、コンタクト
に対して共晶結合が確実に形成されるようにすることを
助ける。チタンの代わりに、クロミウム,アルミニウム
およびバナジウムを含む他の材料を使ってもよい。
する新規の方法が提供されたことが理解頂けよう。3段
階の表面洗浄動作を利用することにより、非化学量論的
シリコン酸化物がウェハの表面から確実に除去される。
半導体ウェハの表面上に化学量論的二酸化シリコン層を
形成することにより、コンタクト材料が確実に半導体ウ
ェハに接着するようにする。コンタクト材料上に金のキ
ャップを形成することにより、コンタクトに対する共晶
結合が確実に形成されることを助ける。
形成する段階のいくつかを示す流れ図である。
Claims (4)
- 【請求項1】 コンタクトを形成する方法であって:あ
る裏面24を有する半導体基板(20)を準備する段
階;前記半導体基板の前記表面上に化学量論的二酸化シ
リコン(27)層を形成する段階;および前記化学量論
的二酸化シリコン層の上にコンタクト材料(26)を形
成する段階;によって構成されることを特徴とする方
法。 - 【請求項2】 湿式化学的酸化を利用する前に、前記半
導体基板の前記表面を洗浄する段階であって、 前記基板の洗浄は硝酸,フッ化水素酸および酢酸を含む
溶液を用いてバルク・シリコン除去段階を実行し、 次に水,過酸化水素およびフッ化アンモニウムを含む溶
液を用いてステイン・エッチングを行い、 次にフッ化アンモニウムおよびフッ化水素を含む溶液を
用いて剥離動作を行う、 段階を含む洗浄段階を含むことを特徴とする請求項1記
載の方法。 - 【請求項3】 コンタクトを形成する方法であって:半
導体基板(20)に対する電気的コンタクトを提供する
多層金属コンタクト(26)を形成する段階であって、
前記金属コンタクトがチタン層,ニッケル層および金−
ゲルマニウム合金層を含む、ところの段階;および前記
金−ゲルマニウム合金層の一部分からゲルマニウムを除
去することにより、前記部分を金に転化する段階;によ
って構成されることを特徴とする方法。 - 【請求項4】 半導体のある表面を洗浄する方法であっ
て:硝酸,フッ化水素酸および酢酸を含む溶液に前記表
面を晒すことにより、バルク・シリコン除去段階を実行
する段階;水,過酸化水素およびフッ化アンモニウムを
含む溶液に前記表面を晒すことによりステイン・エッチ
ングを実行する段階;およびフッ化アンモニウムおよび
フッ化水素を含む溶液に前記表面を晒すことにより剥離
動作を実行する段階;によって構成されることを特徴と
する方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/858,417 US6248664B1 (en) | 1997-05-19 | 1997-05-19 | Method of forming a contact |
US858417 | 1997-05-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10335632A true JPH10335632A (ja) | 1998-12-18 |
JP4275216B2 JP4275216B2 (ja) | 2009-06-10 |
Family
ID=25328276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15378198A Expired - Lifetime JP4275216B2 (ja) | 1997-05-19 | 1998-05-19 | 電気コンタクトの形成方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US6248664B1 (ja) |
JP (1) | JP4275216B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7632696B2 (en) | 2005-03-11 | 2009-12-15 | Elpida Memory, Inc. | Semiconductor chip with a porous single crystal layer and manufacturing method of the same |
US7911058B2 (en) | 2005-11-30 | 2011-03-22 | Elpida Memory Inc. | Semiconductor chip having island dispersion structure and method for manufacturing the same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003539A1 (de) * | 2000-01-27 | 2001-08-02 | Philips Corp Intellectual Pty | Halbleiterbauelement mit Metallschicht |
US6444402B1 (en) * | 2000-03-21 | 2002-09-03 | International Business Machines Corporation | Method of making differently sized vias and lines on the same lithography level |
US7591956B2 (en) * | 2006-05-03 | 2009-09-22 | OMG Electronic Chemicals, Inc. | Method and composition for selectively stripping nickel from a substrate |
KR102101996B1 (ko) * | 2018-09-10 | 2020-04-20 | 김상경 | 나노카본 원단을 이용한 차량용 파워윈도우 스위치 접점 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS497870B1 (ja) * | 1969-06-06 | 1974-02-22 | ||
US3735483A (en) * | 1970-03-20 | 1973-05-29 | Gen Electric | Semiconductor passivating process |
US3896473A (en) * | 1973-12-04 | 1975-07-22 | Bell Telephone Labor Inc | Gallium arsenide schottky barrier avalance diode array |
US4374012A (en) * | 1977-09-14 | 1983-02-15 | Raytheon Company | Method of making semiconductor device having improved Schottky-barrier junction |
JPS55153338A (en) * | 1979-05-18 | 1980-11-29 | Fujitsu Ltd | Surface treatment of semiconductor substrate |
US4534099A (en) * | 1982-10-15 | 1985-08-13 | Standard Oil Company (Indiana) | Method of making multilayer photoelectrodes and photovoltaic cells |
US4737839A (en) | 1984-03-19 | 1988-04-12 | Trilogy Computer Development Partners, Ltd. | Semiconductor chip mounting system |
US4776925A (en) * | 1987-04-30 | 1988-10-11 | The Trustees Of Columbia University In The City Of New York | Method of forming dielectric thin films on silicon by low energy ion beam bombardment |
US5508543A (en) * | 1994-04-29 | 1996-04-16 | International Business Machines Corporation | Low voltage memory |
EP0749500B1 (en) * | 1994-10-18 | 1998-05-27 | Koninklijke Philips Electronics N.V. | Method of manufacturing a thin silicon-oxide layer |
JPH09260405A (ja) * | 1996-03-27 | 1997-10-03 | Mitsubishi Electric Corp | 半導体装置とその製造方法 |
-
1997
- 1997-05-19 US US08/858,417 patent/US6248664B1/en not_active Expired - Lifetime
-
1998
- 1998-05-19 JP JP15378198A patent/JP4275216B2/ja not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7632696B2 (en) | 2005-03-11 | 2009-12-15 | Elpida Memory, Inc. | Semiconductor chip with a porous single crystal layer and manufacturing method of the same |
US7911058B2 (en) | 2005-11-30 | 2011-03-22 | Elpida Memory Inc. | Semiconductor chip having island dispersion structure and method for manufacturing the same |
US8088673B2 (en) | 2005-11-30 | 2012-01-03 | Elpida Memory Inc. | Semiconductor chip having island dispersion structure and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
JP4275216B2 (ja) | 2009-06-10 |
US6248664B1 (en) | 2001-06-19 |
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