JP6545219B2 - 自己整列スペーサ形成 - Google Patents
自己整列スペーサ形成 Download PDFInfo
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- JP6545219B2 JP6545219B2 JP2017079211A JP2017079211A JP6545219B2 JP 6545219 B2 JP6545219 B2 JP 6545219B2 JP 2017079211 A JP2017079211 A JP 2017079211A JP 2017079211 A JP2017079211 A JP 2017079211A JP 6545219 B2 JP6545219 B2 JP 6545219B2
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- spacer layer
- layer
- sacrificial film
- spacer
- thin film
- Prior art date
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- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
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- 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
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- 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
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- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
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- 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
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/7685—Barrier, adhesion or liner layers the layer covering a conductive structure
- H01L21/76852—Barrier, adhesion or liner layers the layer covering a conductive structure the layer also covering the sidewalls of the conductive structure
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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
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
- H01L21/7688—Filling of holes, grooves or trenches, e.g. vias, with conductive material by deposition over sacrificial masking layer, e.g. lift-off
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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Description
ここで図面、特に図1及び図2Aを参照して、デバイス11を製造するための基板上に形成された薄膜の構造をパターニングする方法10が説明される。すなわち、12において、膜積層体43を含むリソグラフィー構造が基板15上に形成される。膜積層体43は、基板15上に形成された薄膜17と、薄膜17上に形成された犠牲膜19と、犠牲膜19上に形成されたフォトレジスト層21とを備えている。
AlL1L2L3Dx
を有している。ここで、L1、L2、L3は個々のアニオン性配位子であり、Dは中性ドナー配位子であり、xは0、1又は2であることができる。各L1、L2、L3配位子は、アルコキシド、ハロゲン化物、アリールオキシド、アルキル、アミド類、シクロペンタジエニル、アルキル、シリル、アミジナート、−ジケトナート、ケトイミネート、シラノエート、及びカルボキシレートからなる群から選択される。D配位子は、エーテル、フラン、ピリジン、ピロール、ピロリジン、アミン、クラウンエーテル、グライム及びニトリルの群から選択することができる。
Claims (20)
- 基板の処理方法であって、
基板上に犠牲膜を形成するステップと、
前記犠牲膜にパターンを形成するステップと、
前記のパターン化された犠牲膜の上に第1スペーサ層をコンフォーマルに堆積させるステップと、
前記第1スペーサ層の垂直部分を実質的に残しながら、前記第1スペーサ層の水平部分を除去するステップと、
その後、気相曝露を行うことによって、第2スペーサ層を、前記第1スペーサ層が除去された前記犠牲膜の水平部分には堆積させず、前記第1スペーサ層の露出している表面上のみに選択的に堆積させるステップと、
を含む方法。 - 前記第2スペーサ層を選択的に堆積した後に前記犠牲膜を除去し、それによって第1及び第2スペーサ層を含むパターンを形成するステップを、さらに含む、請求項1記載の方法。
- 前記基板と前記犠牲膜との間に薄膜が形成されており、
前記方法はさらに、
前記の残された第1スペーサ層及び第2スペーサ層の垂直部分を、前記薄膜をエッチングするためのマスクとして使用するステップを、
含む、請求項2記載の方法。 - 前記第2スペーサ層を選択的に堆積した後に前記犠牲膜を除去するステップと、
第1スペーサ層を除去することによって、第2スペーサ層を含むパターンを形成するステップと、
をさらに含む請求項1記載の方法。 - 前記基板と前記犠牲膜との間に薄膜が形成されており、
前記方法はさらに、
前記の残された第2スペーサ層の垂直部分を、前記薄膜をエッチングするためのマスクとして使用するステップを、
含む、請求項4記載の方法。 - 前記第1スペーサ層を除去するステップは、
前記第1スペーサ層を露出させるために、前記第1スペーサ層の上表面上の前記第2スペーサ層の水平部分を除去するステップと、
前記の露出した第1スペーサ層を除去するステップと、
を含む、請求項4記載の方法。 - 前記第2スペーサ層を選択的に堆積する前に前記犠牲膜を除去するステップと、
前記第1スペーサ層を除去することによって、前記第2スペーサ層を含むパターンを形成するステップと、
をさらに含む、請求項1記載の方法。 - 前記基板と前記犠牲膜との間に薄膜が形成されており、
前記方法はさらに、
前記の残された第2スペーサ層の垂直部分を、前記薄膜をエッチングするためのマスクとして使用するステップをさらに含む、請求項7記載の方法。 - 前記第1スペーサ層を除去する段階は、
前記第1スペーサ層を露出させるために、前記第1スペーサ層の上表面上の前記第2スペーサ層の水平部分を除去するステップと、
前記の露出した第1スペーサ層を除去するステップと、
を含む、請求項7記載の方法。 - 前記第2スペーサ層を選択的に堆積する前に前記犠牲膜を除去するステップを、さらに含む、請求項1記載の方法。
- 前記基板と前記犠牲膜との間に薄膜が形成されており、
前記方法はさらに、
前記の残された第1スペーサ層及び第2スペーサ層の垂直部分を、前記薄膜をエッチングするためのマスクとして使用するステップを含む、請求項10記載の方法。 - 前記犠牲膜にパターンを形成するステップは、
フォトレジスト層を堆積し、イメージングし、現像するステップと、
前記のイメージングされたフォトレジスト層に従って前記犠牲膜をエッチングするステップと、
前記フォトレジスト層を除去するステップとを含む、
請求項1記載の方法。 - 前記第1スペーサ層をコンフォーマルに堆積させるステップは、気相堆積を含む、請求項1に記載の方法。
- 前記第1スペーサ層は、前記第1スペーサ層の上に前記第2スペーサ層の選択的堆積を触媒する金属含有層を含む、請求項1に記載の方法。
- 前記金属含有層がアルミニウム又はチタンを含む、請求項14に記載の方法。
- 前記金属含有層が、Al、Al2O3、AlN、AlON、Al含有前駆体、Ti、TiO2、TiON、TiN、Ti含有前駆体及びそれらの組み合わせからなる群から選択される、請求項15に記載の方法。
- 前記第2スペーサ層がSiO2層を含む、請求項1に記載の方法。
- 前記SiO2層が、シラノール気相曝露を使用して堆積される、請求項17に記載の方法。
- 前記第1スペーサ層の少なくとも1つの水平部分を除去するステップは、前記犠牲膜の上表面上の水平部分を除去するステップを含む、請求項1に記載の方法。
- 前記第2スペーサ層を堆積するステップは、
アルミニウム又はチタンを含む金属含有層とSiO2層とを交互に堆積するステップを含む、
請求項1記載の方法。
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