JP2017085094A - 配向ノッチを有する半導体ウエハーを保持するためのサセプタ、半導体ウエハー上に層を堆積するための方法、および半導体ウエハー - Google Patents
配向ノッチを有する半導体ウエハーを保持するためのサセプタ、半導体ウエハー上に層を堆積するための方法、および半導体ウエハー Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 118
- 238000000151 deposition Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000008021 deposition Effects 0.000 claims abstract description 27
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 14
- 238000011156 evaluation Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 2
- 235000012431 wafers Nutrition 0.000 description 86
- 230000000052 comparative effect Effects 0.000 description 6
- 230000007717 exclusion Effects 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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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
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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
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- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
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- C23C16/4585—Devices at or outside the perimeter of the substrate support, e.g. clamping rings, shrouds
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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/12—Substrate holders or susceptors
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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/18—Epitaxial-layer growth characterised by the substrate
- C30B25/20—Epitaxial-layer growth characterised by the substrate the substrate being of the same materials as the epitaxial layer
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
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Abstract
Description
300mmの直径を有する、単結晶シリコンから作られる半導体ウエハーは、2.5μmの厚みを有するシリコンから作られるエピタキシャル層を有して図1に係るリアクタにおいてコーティングされた。その後、配向ノッチを有するセクタの局所的平坦性ESFQRはKLA−TencorCorporationを製造メーカとするWaferSightという種類の測定デバイスの手段によって決定され、配向ノッチの領域内で裏側のトポグラフィは、共焦点顕微鏡の手段によって調査された。
Claims (11)
- 配向ノッチを有する半導体ウエハーを、前記半導体ウエハーの表面側上への層の堆積中に、保持するためのサセプタであって、
前記半導体ウエハーを前記半導体ウエハーの裏側のエッジ領域において載置するための載置表面と、
前記載置表面の段差状の外側境界と、
前記半導体ウエハーの裏側のエッジ領域の部分領域の載置のための前記載置表面の前記外側境界の凹凸部とを有し、前記配向ノッチは、前記載置表面の前記外側境界の前記凹凸部によって定められた前記載置表面の前記部分領域上に配置される、サセプタ。 - 前記配向ノッチが配置される、前記半導体ウエハーの裏側のエッジ領域の前記部分領域の載置ための前記載置表面の凹凸部によって特徴付けられる、請求項1に記載のサセプタ。
- 前記載置表面は、水平に配置される、請求項1または請求項2に記載のサセプタ。
- 前記載置表面は、内向に勾配されて配置され、傾斜の角度は、3°以下である、請求項1または請求項2に記載のサセプタ。
- 前記載置表面の前記外側境界の前記凹凸部によって定められた前記載置表面の領域内の前記載置表面は、前記半導体ウエハーの載置後に、少なくとも前記配向ノッチと同じぐらい内向に延びる、請求項1から請求項4のいずれか1項に記載のサセプタ。
- 配向ノッチを有する半導体ウエハー上に層を堆積するための方法であって、請求項1〜請求項5のいずれか1項に記載のサセプタ上の半導体ウエハーの載置によって特徴付けられ、前記配向ノッチが配置される、前記半導体ウエハーの裏側のエッジ領域の領域は、前記載置表面の前記外側境界の前記凹凸部によって定められるサセプタの前記載置表面の領域上に置かれ、
前記半導体ウエハーの表面側へのプロセスガスの供給および前記半導体ウエハーの表面側上の層の堆積とによって特徴付けられる、方法。 - エピタキシャル層は、前記半導体ウエハーの表面側上に堆積される、請求項5に記載の方法。
- シリコンから作られるエピタキシャル層は、シリコンから作られる単結晶の半導体ウエハー上に堆積され、1.5μm以上であり5μm以下のエピタキシャル層の厚さを有する、請求項6に記載の方法。
- 単結晶シリコンから作られる半導体ウエハーであって、直径と、表面側と、裏側と、エッジ領域と、エッジ領域内の配向ノッチと、表面側上のシリコンから作られるエピタキシャル層とを有し、前記エピタキシャル層は1.5μm以上であり5μm以下である厚さを有し、5nm以上であり20nm以下であるESFQRによって表現された前記配向ノッチの領域内の半導体ウエハーの局所的平坦性によって特徴付けられる、半導体ウエハー。
- 200mm以上の直径によって特徴付けられる、請求項9に記載の半導体ウエハー。
- 前記配向ノッチを封止する、長方形の評価エリア上の前記半導体ウエハーの裏側上への材料の堆積によって特徴付けられ、材料の堆積の厚さは、15nm以下である、請求項9または請求項10に記載の半導体ウエハー。
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