JP5305658B2 - ナノワイヤに注入されたドーパントイオンの活性化方法 - Google Patents
ナノワイヤに注入されたドーパントイオンの活性化方法 Download PDFInfo
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- JP5305658B2 JP5305658B2 JP2007543123A JP2007543123A JP5305658B2 JP 5305658 B2 JP5305658 B2 JP 5305658B2 JP 2007543123 A JP2007543123 A JP 2007543123A JP 2007543123 A JP2007543123 A JP 2007543123A JP 5305658 B2 JP5305658 B2 JP 5305658B2
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- nanowire
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Classifications
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- 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
- H01L21/26—Bombardment with radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L29/0657—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 characterised by the shape of the body
- H01L29/0665—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 characterised by the shape of the body the shape of the body defining a nanostructure
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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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
- H01L29/0657—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 characterised by the shape of the body
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- H01L29/0669—Nanowires or nanotubes
- H01L29/0673—Nanowires or nanotubes oriented parallel to a substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L29/0657—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 characterised by the shape of the body
- H01L29/0665—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 characterised by the shape of the body the shape of the body defining a nanostructure
- H01L29/0669—Nanowires or nanotubes
- H01L29/0676—Nanowires or nanotubes oriented perpendicular or at an angle to a substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L29/0657—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 characterised by the shape of the body
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Description
本出願は、2004年11月24日に出願された米国仮特許出願第60/630,743号の利益を主張し、その出願は全体が本明細書に援用される。
該当せず
本発明の実施形態が、改善されたコンタクトドーピングおよびアニールシステムならびにプロセスのために提供される。これらの実施形態は、例証のために提供され、限定的なものではない。本発明の追加的な動作および構造実施形態が、本明細書の説明から、当業者には明らかになるであろう。これらの追加的な実施形態は、本発明の範囲および趣旨内にある。
本発明の実施形態によれば、PIIIを用いて、基板上のナノワイヤおよび他のナノ素子ベースデバイスをドープする。たとえば、PIIIは、従来のドーピング技術の代わりに、フローチャート100のステップ110で用いることができる。図2は、本発明の実施形態に従ってコンタクトドーピングのために用いることができる従来のPIIIリアクタシステム200を示す。システム200には、ソースチャンバ202、プロセスチャンバ204、基板ホルダ208、プラズマ発生器または源210、および電圧/電位源212が含まれる。図2のプラズマ源210は、基板206を損傷せずに、基板206の所望領域における十分なドーパント注入のための、十分な高密度および十分な高エネルギのイオンを有するプラズマ220を発生する。
パルスレーザアニール(PLA)プロセスは、アクティブマトリックス型液晶ディスプレイ(AMLCD)用途のためのポリシリコン薄膜トランジスタ(TFT)の製造に用いられてきた。PLAに比較して、従来の炉アニールは、非常に遅い傾向があり、高サーマルバジェットを有し、プラスチック基板と親和性がない。代替として、高速熱アニール(VRTA)プロセスは、1秒のオーダの加熱期間を要し、低温基板(たとえばガラスまたはプラスチック基板)と親和性がない高いピーク温度を必要とする。
X=πD/λ
であり、ここで、
D=ナノワイヤ直径
A=レーザ光波長
である。
図5A−Gは、成長基板上にナノワイヤを成長させることと、ワイヤをデバイス基板に移すことと、本発明の実施形態に従い、PIIIおよびパルスレーザアニールを用いて、ソースおよびドレインコンタクト領域をナノワイヤに形成することと、のための例示的なプロセスステップを示す。実施形態において、図5Aに関連して最初に示すように、既知の直径を備えた金のナノ粒子(図示せず)を、溶液からの堆積および後続する直接蒸発による溶剤の蒸発によって、シリコン成長基板502上に分配することができる。1つまたは複数の洗浄ステップによってどんな残存有機残渣も除去した後で、基板を成長炉に配置して、シリコンナノワイヤ504を成長させることができる。たとえば、SiH4またはSiCl4を成長ガスとして用いることができる。成長ガス濃度、温度および時間を始めとする成長条件を調節することによって、長さが最大50μm(またはより長い)ナノワイヤ504を得ることができる。次に、たとえばフッ化水素酸(HF)を用いた蒸気エッチングによって、ナノワイヤから天然酸化物を除去し、続いて、たとえば図5Bに示すように、ナノワイヤに、酸化物(たとえばSiO2)の一体化したゲート誘電体シェル506を成長させることができる。
本明細書で説明する実施形態は、ナノワイヤTFT技術に適用された場合に、非常に大型の撓性基板上に、従来の単結晶シリコンから製造されたトランジスタの性能特性に匹敵するかまたはそれを超える性能特性を備えたトランジスタを製造することを可能にする。これによって、超大規模で高密度の電気的統合が可能になり、真のシリコン・オン・プラスチック技術が提供される。軍事用途を始めとして、この技術の潜在的な用途は非常に広くて、RF通信、センサアレイ、X線撮像装置、無線周波数識別タグ、可撓性または剛性ディスプレイ、フェーズドアレイアンテナ、エレクトロニクスなどを始めとする様々な独特の用途の開発を含む。
Claims (13)
- プラスチック基板上の少なくとも1つのナノワイヤをアニールしてソース及びドレインコンタクト領域を形成するべく前記ナノワイヤに注入されたドーパントイオンを活性化するための方法であって、前記少なくとも1つのナノワイヤが、シリコンコアと前記シリコンコアの回りに配置された少なくとも1つのシェル層を備えるものであり、前記少なくとも1つのシェル層が天然または堆積酸化物層を含み、
100mJ/cm2未満のレーザフルエンスを有する少なくとも第1のレーザで、前記プラスチック基板上の前記少なくとも1つの前記ナノワイヤにおける部分を照射することを含み、
前記第1のレーザが、2〜18mJ/cm2のレーザフルエンスを有し、可視光範囲内で500nmより大きい波長を有する、方法。 - 前記第1のレーザが、6〜14mJ/cm2のレーザフルエンスを有する、請求項1に記載の方法。
- 前記第1のレーザが、16mJ/cm2未満のレーザフルエンスを有する、請求項1に記載の方法。
- 前記照射が、前記少なくとも1つのナノワイヤの全長に沿って照射することを含む、請求項1に記載の方法。
- 前記レーザがパルスレーザを含む、請求項1に記載の方法。
- 前記パルスレーザがエキシマレーザを含む、請求項5に記載の方法。
- 前記パルスレーザが、Nd:YLF(ネオジム:イットリウム・リチウム・フルオライド)レーザまたはNd:YAG(ネオジム:イットリウム・アルミニウム・ガーネット)レーザを含む、請求項5に記載の方法。
- 前記レーザが、前記プラスチック基板によって吸収されない波長の光を放射する、請求項1に記載の方法。
- 前記少なくとも1つのナノワイヤにおける前記部分が、1つまたは複数のゲート領域をさらに含む、請求項1に記載の方法。
- 前記アニールが、半導体デバイスを製造する際にドーパント活性化プロセスの一部として用いられる、請求項1に記載の方法。
- 前記デバイスが、トランジスタ、ダイオードまたは抵抗器を含む、請求項10に記載の方法。
- 前記少なくとも1つのナノワイヤが、前記プラスチック基板に堆積されたナノワイヤ薄膜内に組み込まれている、請求項1に記載の方法。
- 前記少なくとも1つのシェル層における部分が、ソースおよびドレインコンタクト領域において、前記少なくとも1つのナノワイヤの前記シリコンコアまで除去される、請求項1に記載の方法。
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PCT/US2005/040710 WO2006057818A2 (en) | 2004-11-24 | 2005-11-10 | Contact doping and annealing systems and processes for nanowire thin films |
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AU2005309906B2 (en) | 2010-12-09 |
AU2005309906A1 (en) | 2006-06-01 |
WO2006057818A2 (en) | 2006-06-01 |
CA2585009A1 (en) | 2006-06-01 |
KR101172561B1 (ko) | 2012-08-08 |
WO2006057818A3 (en) | 2008-01-03 |
EP1820210A2 (en) | 2007-08-22 |
JP2008522404A (ja) | 2008-06-26 |
CN101263078A (zh) | 2008-09-10 |
US7569503B2 (en) | 2009-08-04 |
CN101263078B (zh) | 2012-12-26 |
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