JP2015073095A - ワイヤ−ベース半導体装置を製造する方法 - Google Patents
ワイヤ−ベース半導体装置を製造する方法 Download PDFInfo
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- JP2015073095A JP2015073095A JP2014183997A JP2014183997A JP2015073095A JP 2015073095 A JP2015073095 A JP 2015073095A JP 2014183997 A JP2014183997 A JP 2014183997A JP 2014183997 A JP2014183997 A JP 2014183997A JP 2015073095 A JP2015073095 A JP 2015073095A
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- dielectric
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Classifications
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- H—ELECTRICITY
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- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1025—Channel region of field-effect devices
- H01L29/1029—Channel region of field-effect devices of field-effect transistors
- H01L29/1033—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
- H01L29/1037—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure and non-planar channel
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76816—Aspects relating to the layout of the pattern or to the size of vias or trenches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76897—Formation of self-aligned vias or contact plugs, i.e. involving a lithographically uncritical step
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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Abstract
【解決手段】ドープされた半導体材料のワイヤ220は、チャネル領域を形成し、その周囲のゲート290は、導電材料によって形成される。ワイヤ220及びゲート290は、ゲート誘電体280によって隔てられ、ゲート290はゲートコンタクトを形成するために上部に延びる部位290aを有する。ゲートは、ワイヤ220の周辺部の周りに完全に広がる。下部コンタクト250は、ワイヤ220の下端との電気的な接触を提供する。下部コンタクト250は、下部コンタクトとの電気的な接触を形成するための上部に延びる部位250aを有する。上部コンタクト320は、ワイヤ220の上端との電気的な接触を提供する。下部コンタクト250及び上部コンタクト320は、ソース/ドレインコンタクトとして機能する。
【選択図】図1
Description
Claims (30)
- 半導体装置を製造する方法であって、
単結晶シリコン基板を提供するステップと、
前記単結晶シリコン基板に亘って層のスタックを形成するステップであって、前記スタックが、スペーサ層によって隔てられる3つのシリコン酸化物層を含む、ステップと、
前記単結晶シリコン基板へスタックダウンで垂直ナノワイヤホールをエッチングするステップと、
エピタキシャル堆積プロセスを用いて前記垂直ナノワイヤホールを充填することによりナノワイヤを形成するステップと、を備える方法。 - 前記シリコン酸化物層の一又はそれ以上は、ドーパントを含み、
前記シリコン酸化物層の少なくとも1つから前記ナノワイヤへドーパントを打ち込むためにアニールを行うステップをさらに備える請求項1に記載の方法。 - 前記シリコン酸化物層の他のものは、ドーパントを含む請求項2に記載の方法。
- 前記ナノワイヤの幅は、約15nm以下である請求項1に記載の方法。
- 半導体装置を製造する方法であって、
シリコン基板を提供するステップと、
前記シリコン基板に誘電体スタックを形成するステップであって、前記誘電体スタックが、複数の誘電体層を含み、隣接する前記誘電体層が、隣接する前記誘電体層とは異なる材料で形成されるスペーサ層によって隔てられる、ステップと、
前記誘電体スタックを通じて垂直に延びるホールを形成するステップと、
エピタキシャル堆積を行うことにより前記ホールを充填するステップであって、前記ホールを充填する材料がワイヤを形成する、ステップと、を備える方法。 - 前記誘電体スタックを形成するステップは、
第1のスペーサ層を堆積するステップと、
第1の誘電体層を堆積するステップと、
第2のスペーサ層を堆積するステップと、
第2の誘電体層を堆積するステップと、
第3のスペーサ層を堆積するステップと、
第3の誘電体層を堆積するステップと、
第4のスペーサ層を堆積するステップと、を備える請求項5に記載の方法。 - 側面エッチストップを形成するステップであって、前記側面エッチストップが、前記ワイヤを収容するための領域の周囲に連続的に広がっている、ステップをさらに備え、
前記側面エッチストップを形成するステップは、
前記誘電体スタックを通じて前記シリコン基板へトレンチをエッチングするステップと、
前記複数の誘電体層を形成する材料とは異なる材料で前記トレンチを少なくとも部分的に充填するステップと、を備える請求項6に記載の方法。 - 前記誘電体スタックを通じて垂直に延びる前記ホールを形成するステップは、複数の前記ホールを形成することを含み、前記ホールを充填するステップによって複数の前記ワイヤを形成し、前記ホールのそれぞれは、前記ワイヤの1つを有し、
複数の前記側面エッチストップを形成するステップであって、各側面エッチストップが、領域のアレイを隔てかつ線引きし、各領域が前記ワイヤの1つを収容するためのものであり、複数の前記側面エッチストップは、各領域の周囲に連続的に広がる、ステップをさらに備える請求項7に記載の方法。 - 第1の誘電体層を露出するために前記誘電体スタックにおいて第1の開口を形成するステップと、
前記側面エッチストップによって囲まれる領域内の前記第1の誘電体層を選択的にエッチングし、それにより、第1の埋め込み空間を形成するステップと、をさらに備える請求項7に記載の方法。 - 前記第1の埋め込み空間を、前記ワイヤと電気的に接触する下部導電材料で充填するステップをさらに備える請求項9に記載の方法。
- 第2の誘電体層を露出するために前記誘電体スタックにおいて第2の開口を形成するステップと、
前記側面エッチストップによって囲まれる領域内の前記第2の誘電体層を選択的にエッチングし、それにより、第2の埋め込み空間を形成するステップと、をさらに備える請求項10に記載の方法。 - 前記ワイヤの露出された部分に誘電体ライナーを形成することを含む、前記第2の埋め込み空間にhigh−k誘電体材料を堆積することにより前記誘電体ライナーを形成するステップをさらに備える請求項11に記載の方法。
- 前記ワイヤの周辺部の周りに配置される中間導電材料で前記第2の埋め込み空間を充填するステップをさらに備える請求項12に記載の方法。
- 前記誘電体ライナーを形成するステップは、原子層堆積によって前記誘電体材料を堆積することを含む請求項12に記載の方法。
- 第3の誘電体層を露出するために前記誘電体スタックにおいて第3の開口を形成するステップと、
前記側面エッチストップによって囲まれる領域内の前記第3の誘電体層を選択的にエッチングし、それにより、第3の埋め込み空間を形成するステップと、をさらに備える請求項14に記載の方法。 - 前記第3の埋め込み空間を、前記ワイヤと電気的に接触する上部導電材料で充填するステップをさらに備える請求項15に記載の方法。
- 前記ワイヤは、トランジスタのチャネル領域を形成し、前記下部導電材料は、下部トランジスタコンタクトを形成し、中間導電材料は、ゲートを形成し、前記上部導電材料は、上部トランジスタコンタクトを形成する請求項16に記載の方法。
- 前記側面エッチストップによって囲まれる別の領域に相補型ワイヤを形成するステップであって、前記別の領域は、前記ワイヤが収容される領域に隣接される、ステップをさらに備える請求項17に記載の方法。
- 前記ワイヤの上部及び下部は、P型にドープされ、前記ワイヤは、PMOSトランジスタのチャネル領域を形成し、前記補助ワイヤの上部及び下部は、N型にドープされ、前記相補型ワイヤは、NMOSトランジスタのチャネル領域を形成する請求項18に記載の方法。
- 前記ワイヤの上部及び下部と前記相補型ワイヤの上部及び下部とは、反対の型でドープされ、前記ワイヤの上部は、前記相補型ワイヤの上部に対して反対の型でドープされ、前記ワイヤ及び前記相補型ワイヤは、相補型トンネル電界効果トランジスタを形成する請求項18に記載の方法。
- 前記第1の誘電体層をドープするステップと、
前記第3の誘電体層をドープするステップと、をさらに備える請求項6に記載の方法。 - 前記第1の誘電体層及び前記第3の誘電体層から前記ワイヤへドーパントを拡散するステップをさらに備える請求項21に記載の方法。
- 前記ドーパントを拡散するステップは、前記第1の誘電体層及び前記第3の誘電体層から前記ワイヤへドーパントを打ち込むために前記誘電体スタックをアニールすることを含む請求項22に記載の方法。
- 複数の前記誘電体層のそれぞれは、同一の材料を含む請求項5に記載の方法。
- 複数の前記誘電体層のそれぞれは、シリコン酸化物を含む請求項24に記載の方法。
- 前記スペーサ層のそれぞれは、同一の材料を含む請求項5に記載の方法。
- 前記スペーサ層のそれぞれは、シリコン窒化物を含む請求項26に記載の方法。
- 垂直に延びる前記ホールを形成するステップは、前記ホールを前記シリコン基板へエッチングすることを含む請求項5に記載の方法。
- 前記ホールを充填するステップは、前記ワイヤを形成する材料が堆積されたときに、前記ワイヤを形成する材料をドーピングすることを含む請求項5に記載の方法。
- 前記ホールを堆積するステップは、シリコン、ゲルマニウム又はその混合物を堆積することを含む請求項5に記載の方法。
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