JP2018511700A - 膜堆積のためのパルス化されたプラズマ - Google Patents
膜堆積のためのパルス化されたプラズマ Download PDFInfo
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
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- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 4
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
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- 229910052743 krypton Inorganic materials 0.000 claims description 2
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 claims description 2
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- WYEMLYFITZORAB-UHFFFAOYSA-N boscalid Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1NC(=O)C1=CC=CN=C1Cl WYEMLYFITZORAB-UHFFFAOYSA-N 0.000 description 1
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- 239000000395 magnesium oxide Substances 0.000 description 1
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- 239000002052 molecular layer Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
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- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
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- 230000003313 weakening effect Effects 0.000 description 1
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- 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
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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- 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
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02321—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer
- H01L21/02329—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer introduction of nitrogen
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
- H01L21/0234—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour treatment by exposure to a plasma
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- 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
- H01L21/76822—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc.
- H01L21/76826—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by contacting the layer with gases, liquids or plasmas
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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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- H01L21/76829—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
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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
- H01L21/76829—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76831—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers in via holes or trenches, e.g. non-conductive sidewall liners
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Abstract
Description
Claims (15)
- 処理チャンバ内に配置された基板を処理する方法であって、
(a)遠隔プラズマ源から生成される第1の反応性核種と第1の前駆体に基板を曝すことによって、前記基板上に材料層を堆積することであって、前記第1の反応性核種が前記第1の前駆体と反応する、堆積すること、並びに、
(b)第2のプラズマ源から前記処理チャンバ内に生成されるプラズマに前記基板を曝すことによって、堆積した前記材料層のすべて、又は実質的にすべてを処理することであって、前記遠隔プラズマ源又は前記第2のプラズマ源のうちの少なくとも1つは、堆積時間と処理時間を制御するためにパルス化される、処理すること
を含む方法。 - (c)前記基板上に所定の厚みの前記材料層が堆積し、処理されるまで、(a)及び(b)を繰り返すこと
を更に含む、請求項1に記載の方法。 - 前記第2のプラズマ源は前記処理チャンバ内の基板支持ペデスタルに連結されている、請求項1に記載の方法。
- 前記遠隔プラズマ源及び前記第2のプラズマ源はRF電源、DC電源、又はマイクロ波電源に連結されている、請求項1に記載の方法。
- 堆積した前記材料層は、炭化ケイ素(SiC)、窒化ケイ素(SiN)、酸化ケイ素(SiO)、酸窒化ケイ素(SiON)、オキシ炭化ケイ素(SiOC)、又は金属酸化物のうちの1つである、請求項1に記載の方法。
- 前記処理チャンバ内で生成される前記プラズマは、ヘリウム(He)、アルゴン(Ar)、ネオン(Ne)、クリプトン(Kr)、窒素(N2)、アンモニア(NH3)、又はこれらの任意の組み合わせからなる第2の処理ガスから形成される、請求項1に記載の方法。
- 前記遠隔プラズマ源及び前記第2のプラズマ源のパルス化は、パルス周波数、又はデューティサイクル、又は前記遠隔プラズマ源又は前記第2のプラズマ源に印加される電力を調整することによって制御される、請求項1に記載の方法。
- 前記遠隔プラズマ源は、前記材料層を堆積するため、第1のインターバルでは連続波(CW)モードで操作され、前記第2のプラズマ源は、追加の材料層を堆積しながら、堆積した前記材料層を処理するため、前記第1のインターバル中にパルス化される、或いは、
前記遠隔プラズマ源は、前記材料層を堆積するため、第1のインターバルでは連続波(CW)モードで操作され、前記第1のインターバルに続く第2のインターバルではオフにされ、また、前記第2のプラズマ源は、前記第1のインターバルでオフにされ、堆積した前記材料層を処理するため、前記第2のインターバル中にパルス化される
請求項1から7のいずれか一項に記載の方法。 - 前記遠隔プラズマ源は、前記材料層を堆積するため、第1のインターバルではパルス化され、前記第2のプラズマ源は、堆積した前記材料層を連続的に処理するため、前記第1のインターバル中に連続波(CW)モードで操作される、請求項1から7のいずれか一項に記載の方法。
- 前記遠隔プラズマ源と前記第2のプラズマ源は共にパルス化され、また、前記材料層を堆積すると同時に堆積された前記材料層を処理するため、前記遠隔プラズマ源と前記第2のプラズマ源は第1のインターバル中に同時にオンになり、第2のインターバル中に同時にオフになるように、前記遠隔プラズマ源と前記第2のプラズマ源は同相でパルス化される、請求項1から7のいずれか一項に記載の方法。
- 前記遠隔プラズマ源と前記第2のプラズマ源は共にパルス化され、また、前記材料層を堆積し、その後、前記材料の追加の層を堆積することなく、堆積した前記材料層を処理するため、前記遠隔プラズマ源がオンのとき前記第2のプラズマ源はオフになり、前記遠隔プラズマ源がオフのとき前記第2のプラズマ源はオンになるように、前記遠隔プラズマ源と前記第2のプラズマ源は位相をずらしてパルス化される、請求項1から7のいずれか一項に記載の方法。
- 前記遠隔プラズマ源と前記第2のプラズマ源は共にパルス化され、また、前記遠隔プラズマ源と前記第2のプラズマ源は、前記遠隔プラズマ源がオンのとき前記第2のプラズマ源はオフになり、前記遠隔プラズマ源がオフのとき前記第2のプラズマ源はオンになるように、第1のインターバルでは位相をずらしてパルス化され、前記遠隔プラズマ源がオンのとき前記第2のプラズマ源はオンになり、前記遠隔プラズマ源がオフのとき前記第2のプラズマ源はオフになるように、第2のインターバルでは同相でパルス化される、請求項1から7のいずれか一項に記載の方法。
- 前記遠隔プラズマ源と前記第2のプラズマ源は共にパルス化され、また、前記材料層を堆積して処理するため、前記遠隔プラズマ源と前記第2のプラズマ源は、前記遠隔プラズマ源がオンのとき前記第2のプラズマ源がオンになり、前記遠隔プラズマ源がオフのとき前記第2のプラズマ源はオフになるように、第1のインターバルでは同相でパルス化され、前記遠隔プラズマ源がオンのとき前記第2のプラズマ源はオフになり、前記遠隔プラズマ源がオフのとき前記第2のプラズマ源はオンになるように、第2のインターバルでは位相をずらしてパルス化される、請求項1から7のいずれか一項に記載の方法。
- 前記遠隔プラズマ源と前記第2のプラズマ源は共にパルス化され、前記遠隔プラズマ源は第1のインターバルでパルス化がオンになり、第2のインターバルでパルス化がオフになり、また、前記第2のプラズマ源は前記第1のインターバル中にはパルス化が複数回オンとオフになり、前記第2のインターバル中にはオフになる、請求項1から7のいずれか一項に記載の方法。
- 前記遠隔プラズマ源と前記第2のプラズマ源は共にパルス化され、また、前記遠隔プラズマ源は、第1のインターバルでパルス化がオンになり、第2のインターバルでパルス化がオフになり、前記第2のプラズマ源は、前記第1のインターバルから所定の時間が経過した後、前記第2のインターバル中にパルス化がオンになる、請求項1から7のいずれか一項に記載の方法。
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