JP2006261217A - 薄膜形成方法 - Google Patents
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- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/401—Oxides containing silicon
- C23C16/402—Silicon dioxide
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/452—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by activating reactive gas streams before their introduction into the reaction chamber, e.g. by ionisation or addition of reactive species
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- H—ELECTRICITY
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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
- H01L21/02164—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 oxide, e.g. SiO2
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- H—ELECTRICITY
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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
- H01L21/02205—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 the layer being characterised by the precursor material for deposition
- H01L21/02208—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 the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02211—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 the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound being a silane, e.g. disilane, methylsilane or chlorosilane
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- H—ELECTRICITY
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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
- H01L21/02104—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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- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31604—Deposition from a gas or vapour
- H01L21/31608—Deposition of SiO2
- H01L21/31612—Deposition of SiO2 on a silicon body
Abstract
【解決手段】 真空容器内でプラズマを生成して活性種(ラジカル)を発生させ、この活性種と材料ガスでシリコン基板にシリコン酸化膜の成膜を行う薄膜形成方法であって、真空容器内で活性種(ラジカル)と材料ガスとが初めて接触し、両者の反応によりシリコン基板上へのシリコン酸化膜形成が行われる成膜処理空間へ、窒素原子を含むガスを前記材料ガス以外に導入することとし、シリコン基板へのシリコン酸化膜の成膜が行われている間における当該窒素原子を含むガスの流量を、少なくとも、シリコン基板へのシリコン酸化膜の成膜開始の時点において最大になるように調整する薄膜形成方法。
【選択図】 図2
Description
(2)プラズマ生成空間に導入される酸素ガス:
流量5.0×10−1(l/min)(1500sccm)
(3)高周波電力:150W
(4)材料ガスSinH2n+2(n=1):
流量4.0×10−3(l/min)(20sccm)
(5)第二の内部空間に導入されるNxOyガス(x=1、y=2):
流量4.0×10−4(l/min)(2sccm)
(6)第二の内部空間に導入される酸素ガス:
流量4.0×10−4(l/min)(2sccm)
(7)基板の温度(成膜温度):300℃
(8)プラズマ生成空間の圧力:40Pa
(9)成膜処理空間の圧力:40Pa
(10)薄膜全体の膜厚(成膜時間):100nm(4分)。
3 高周波電極
6 基板保持機構
8 プラズマ生成空間
9 成膜処理空間
10 シリコン基板
21、23 第二の内部空間
22 ガス拡散孔
24 ガス導入孔
31、33 第一の内部空間
32、34 材料ガス拡散孔
51 酸素ガス供給源
52 材料ガス供給源
55 NxOyガス供給源
61、63、64、67、68 流量制御器
101、102 導電性隔壁板
Claims (8)
- 真空容器の内部を二室に隔離する導電性隔壁板を前記真空容器内に設け、前記二室のうち、一方の室を高周波電極が配置されたプラズマ生成空間、他方の室をシリコン基板を搭載する基板保持機構が配置された成膜処理空間としてそれぞれ形成し、前記導電性隔壁板は、前記プラズマ生成空間と前記成膜処理空間とを通じさせる複数の貫通孔と、前記プラズマ生成空間から隔離され、かつ前記成膜処理空間と複数の材料ガス拡散孔を介して通じている第一の内部空間と、前記第一の内部空間から隔離され、かつ前記成膜処理空間と複数のガス拡散孔を介して通じている第二の内部空間とを有し、前記プラズマ生成空間には放電プラズマにより所望の活性種を生成するためのガスが導入可能とされ、前記プラズマ生成空間内で生成された所望の活性種が前記導電性隔壁板の前記複数の貫通孔を通じて前記成膜処理空間に導入され、前記第一の内部空間に外部から供給された材料ガスが前記複数の材料ガス拡散孔を通して前記成膜処理空間に導入されると共に、前記第二の内部空間に外部から供給された前記材料ガス以外のガスが前記複数のガス拡散孔を介して前記成膜処理空間に導入され、前記成膜処理空間に導入された前記活性種と前記材料ガスとの反応を利用して前記シリコン基板にシリコン酸化膜の成膜を行う薄膜形成方法であって、
前記第二の内部空間に導入される前記材料ガス以外のガスを、窒素原子を含むガスとし、前記シリコン基板へのシリコン酸化膜の成膜が行われている間における当該窒素原子を含むガスの流量が、少なくとも、前記シリコン基板へのシリコン酸化膜の成膜開始の時点において最大になるように調整することを特徴とする薄膜形成方法。 - 窒素原子を含むガスを前記第二の内部空間に導入する流量を、シリコン基板へのシリコン酸化膜の成膜開始の時点から成膜終了までの間のあらかじめ定められた時間まで一定に保つことを特徴とする請求項1記載の薄膜形成方法。
- 窒素原子を含むガスを前記第二の内部空間に導入する流量を、シリコン基板へのシリコン酸化膜の成膜開始の時点から時間の経過と共に連続的に減少させることを特徴とする請求項1記載の薄膜形成方法。
- 窒素原子を含むガスを前記第二の内部空間に導入する流量を、シリコン基板へのシリコン酸化膜の成膜開始の時点から時間の経過と共に段階的に減少させることを特徴とする請求項1記載の薄膜形成方法。
- 請求項1乃至4のいずれか一項記載の薄膜形成方法において、前記第二の内部空間に導入される材料ガス以外のガスである窒素原子を含むガスが、窒素原子を含むガスと、当該窒素原子を含むガスとは異なるガスであって酸素原子を含むガスとからなることを特徴とする薄膜形成方法。
- 窒素原子を含むガスを前記第二の内部空間に導入する流量を、シリコン基板へのシリコン酸化膜の成膜開始の時点から成膜終了までの間のあらかじめ定められた時点で0にするとともに、窒素原子を含むガスが前記第二の内部空間に導入される流量が0になった後も、前記窒素原子を含むガスとは異なるガスであって酸素原子を含むガスを前記第二の内部空間に導入し続けることを特徴とする請求項5記載の薄膜形成方法。
- 前記材料ガスは、化学式SinH2n+2(nは整数)で表わされる一種又は二種以上のシランガスであることを特徴とする請求項1〜6のいずれか一つの項に記載の薄膜形成方法。
- 前記窒素原子を含むガスは、一酸化二窒素、一酸化窒素、二酸化窒素のいずれか一種又は二種以上であることを特徴とする請求項1〜7のいずれか一つの項に記載の薄膜形成方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2005073217A JP2006261217A (ja) | 2005-03-15 | 2005-03-15 | 薄膜形成方法 |
PCT/JP2006/305013 WO2006098316A1 (ja) | 2005-03-15 | 2006-03-14 | 薄膜形成方法 |
CNB2006800124188A CN100568463C (zh) | 2005-03-15 | 2006-03-14 | 薄膜形成方法 |
US11/886,317 US20090202721A1 (en) | 2005-03-15 | 2006-03-14 | Method for Thin Film Formation |
TW095108802A TW200702480A (en) | 2005-03-15 | 2006-03-15 | Method of forming thin film |
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JP2005073217A JP2006261217A (ja) | 2005-03-15 | 2005-03-15 | 薄膜形成方法 |
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US (1) | US20090202721A1 (ja) |
JP (1) | JP2006261217A (ja) |
CN (1) | CN100568463C (ja) |
TW (1) | TW200702480A (ja) |
WO (1) | WO2006098316A1 (ja) |
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WO2006098316A1 (ja) | 2006-09-21 |
TW200702480A (en) | 2007-01-16 |
CN101160645A (zh) | 2008-04-09 |
CN100568463C (zh) | 2009-12-09 |
US20090202721A1 (en) | 2009-08-13 |
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