JPH03287770A - 枚葉式常圧cvd装置 - Google Patents

枚葉式常圧cvd装置

Info

Publication number
JPH03287770A
JPH03287770A JP9059690A JP9059690A JPH03287770A JP H03287770 A JPH03287770 A JP H03287770A JP 9059690 A JP9059690 A JP 9059690A JP 9059690 A JP9059690 A JP 9059690A JP H03287770 A JPH03287770 A JP H03287770A
Authority
JP
Japan
Prior art keywords
substrate
film
wafer
upper chamber
susceptor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9059690A
Other languages
English (en)
Inventor
Nobuhisa Komatsu
小松 伸壽
Toshio Saito
敏雄 斉藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi High Tech Corp
Original Assignee
Hitachi Electronics Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Electronics Engineering Co Ltd filed Critical Hitachi Electronics Engineering Co Ltd
Priority to JP9059690A priority Critical patent/JPH03287770A/ja
Publication of JPH03287770A publication Critical patent/JPH03287770A/ja
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING 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
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical 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
    • C23C16/455Chemical 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 introducing gases into reaction chamber or for modifying gas flows in reaction chamber
    • C23C16/45563Gas nozzles
    • C23C16/45565Shower nozzles

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 [産業上の利用分野コ 本発明はCVD薄膜形成装置に関する。更に詳細には、
本発明は膜厚の均一性を向上させることのできる枚葉式
常圧CVD装置に関する。
[従来技術] 薄膜の形成方法として半導体工業において一般に広く用
いられているものの一つに化学的気相成長法(CVD:
Chemical  VapourDepos i t
 1on)がある。CVDとは、ガス状物質を化学反応
で固体物質にし、基板上に堆積することをいう。
CVDの特徴は、成長しようとする薄膜の融点よりかな
り低い堆積温度で種々の薄膜が得られること、および、
成長した薄膜の純度が高(、SiやSi上の熱酸化膜上
に成長した場合も電気的特性が安定であることで、広く
半導体表面のパッシベーション膜として利用されている
CVDによる薄膜形成は、例えば約400℃−500℃
程度に加熱したウェハに反応ガス(例えば、SiH++
02.またはSiH4+PH3+02)を供給して行わ
れる。上記の反応ガスは反応炉(ベルジャ)内のウェハ
に吹きつけられ、該ウェハの表面に5i02あるいはフ
ォスフオシリケードガラス(PSG)またはポロシリケ
ートガラス(BSG)の薄膜を形成する。また、5i0
2とPSGまたはBSGとの2層成膜が行われることも
ある。更に、モリブデン、タングステンあるいはタング
ステンシリサイド等の金属薄膜の形成にも使用できる。
CVDの成膜処理操作には、ウェハー枚毎に成膜する枚
葉式と、十数枚のウェハを一度に成膜するバッチ式およ
びウェハを連続的に搬送しながら成膜する連続式とがあ
る。枚葉式は大口径ウエノ\に均一なCVD膜を形成す
るのに適している。
従来の枚葉式常圧CVD装置は第2図に示されるように
、上側チャンバ10と下側チャンバ12とからなる反応
室の内部に、回転および昇降可能なサセプタ14が配置
されており、上側チャンバの上面に反応ガス供給手段1
6が配設されている。
このガス供給手段はSiH+と02を別々のパイプから
供給できるように構成されている。上側チャンバ10と
下側チャンバ12とはヒンジ部材20により接続され、
上側チャンバ10が開閉可能に構成されている。このよ
うな構成により反応室内を定期的に清掃することができ
る。
[発明が解決しようとする課題] しかし、第2図のような装置では、反応ガスがウェハ1
8の真上から流下してくるので、ウェハ18の中央部の
膜厚が厚くなり、周辺部が薄くなる傾向があった。
従って、本発明の目的は膜厚均一性を向上させることの
できる枚葉式常圧CVD装置を提供することである。
[課題を解決するための手段] 前記問題点を解決し、あわせて本発明の目的を達成する
ための手段として、この発明は、上側チャンバと下側チ
ャンバとからなる反応室内に、回転および昇降可能なサ
セプタが配置されている枚葉式常圧CVD装置において
、前記上側チャンバの上面には反応ガス供給手段が配設
されており、かつ、該上側チャンバの内側には、供給さ
れた反応ガスの流れを均一化するための多数の貫通スリ
ットを有する整流板が該上側チャンバに固着されており
、前記貫通スリットの下端寄りガス吹き出し口がガスの
流れ方向に向かって20〜45@傾斜していることを特
徴とする枚葉式常圧CVD装置を提供する。
[作用] 前記のように、本発明のCVD装置は貫通スリットのガ
ス吹出口がガスの流れ方向に向かって所定の角度で傾斜
されているので、ウェハ全面で均一な流れができ、膜厚
の均一性が向上される。
[実施例] 以下、図面を参照しながら本発明の一実施例について更
に詳細に説明する。
第1図は本発明の枚葉式常圧CVD装置の一実施例の概
念図である。
第1図に示される装置において第2図の従来の装置と同
一の部材については第2図で使用された符号と同じ符号
を使用する。
第1図における本発明の枚葉式CVD装置も従来の装置
と同様に上側チャンバ10と下側チャンバ12とからな
る。上側チャンバ10と下側チャンバ12とはヒンジ部
材20により接続され、上側チャンバ10が開閉可能に
構成されている。図示されていないが、装置稼働中は、
上側チャンバ10と下側チャンバ12とは適当なりラン
プ機構などにより圧締めされている。
上側チャンバ10の内部には整流板30が配設されてい
る。整流板30の上面側にガス拡散空間32が形成され
ている。
整流板30のウェハ対同部分には、前記ガス拡散空間3
2から反応空間38に抜ける多数の貫通孔40が設けら
れている。また、整流板30の下端の適当な一箇所に排
気口42を設ける。この排気口42は装置の排気ダクト
44に隣接して設けることが好ましい。整流板の排気口
は装置の排気ダクトに連結し、一体化してはならない。
また、前記貫通孔40を排気口42の方向に向けて20
〜45′の角度で傾斜させる。傾斜角度が20゜未満で
はガスが水平に流れ、ウェハ表面に接触しない恐れがあ
る。また、傾斜角度が45°超では垂直吹付けのように
なり膜厚均一性の改善効果が期待できない。貫通孔の吹
き出し角度を20〜45@の範囲内にすると、ウェハ全
面で均一なガス流れが形成され、異物発生が抑制される
ばかりか、デポレートも増大させることができる。
反応空間38内をガスが排気口42に向かってスムーズ
に流れるようにするため、サセプタ14を囲む包囲板4
6および48を設けることが好ましい。包囲板46とサ
セプタ14との間には極く僅かな隙間があり、サセプタ
14の昇降には支障がない。
サセプタ14はエアシリンダ50などの常用の昇降機構
により昇降可能に構成されている。エアシリンダ50は
例えば、支柱60の下面に配設することが好ましい。成
膜反応を実施する場合にはサセプタを上昇させ、成膜反
応終了後は下降させる。サセプタの上面がゲート部(図
示されていない)の所に達したら下降を停止させる。
サセプタ14は回転可能に構成されている。例えば、サ
セプタ14を脚62により回転板64に固着し、この回
転板64と支柱60の間に自転ベアリング66を挿入す
る。図示されていない適当な駆動源により回転板64を
回転させるとサセプタ14が回転される。サセプタ14
は成膜反応処理中だけ回転される。
本発明の装置によりCVD膜を成膜する場合、前記のよ
うにサセプタ14が上昇され、整流板30の包囲板46
の高さ位置で停止される。反応ガス送入手段16から反
応ガス拡散空間32にガスが送られ、貫通孔40からサ
セプタ上面に載置されたウェハ18に流下する。ウェハ
18はサセプタ14のヒータ68により所定温度にまで
加熱されており、加熱ウェハ表面で成膜反応が行われる
成膜処理中、ウェハはサセプタと共に回転している。
[発明の効果] 以上説明したように、本発明のCVD!tIiFは貫通
スリットのガス吹出口がガスの流れ方向に向かって所定
の角度で傾斜されているので、ウェハ全面で均一な流れ
ができ、膜厚の均一性が向上される。
本発明の装置で成膜すると、ウェハ全面に縦方向に薄膜
が堆積される成膜状態となるために膜質が改善される。
また、ウェハ全面で均一な層流ができ、乱流や渦流は出
来ないので、異物の発生が抑制されるばかりか、デポレ
ートを増大させることができる。
【図面の簡単な説明】
第1図は本発明の枚葉式常圧CVD装置の一実施例の概
念図であり、第2図は従来の枚葉式常圧CVD装置の一
例の概念図である。 10・・・上側チャンバ、12・・・下側チャンバ。 14・・・サセプタ、16・・・反応ガス送入手段。 18・・・ウェハ、30・・・整流板、40・・・貫通
孔。 42・・・排気口、46および48・・・包囲板6 第2図

Claims (1)

    【特許請求の範囲】
  1. (1)上側チャンバと下側チャンバとからなる反応室内
    に、回転および昇降可能なサセプタが配置されている枚
    葉式常圧CVD装置において、前記上側チャンバの上面
    には反応ガス供給手段が配設されており、かつ、該上側
    チャンバの内側には、供給された反応ガスの流れを均一
    化するための多数の貫通スリットを有する整流板が該上
    側チャンバに固着されており、前記貫通スリットの下端
    寄りガス吹き出し口がガスの流れ方向に向かって20〜
    45゜傾斜していることを特徴とする枚葉式常圧CVD
    装置。
JP9059690A 1990-04-05 1990-04-05 枚葉式常圧cvd装置 Pending JPH03287770A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9059690A JPH03287770A (ja) 1990-04-05 1990-04-05 枚葉式常圧cvd装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9059690A JPH03287770A (ja) 1990-04-05 1990-04-05 枚葉式常圧cvd装置

Publications (1)

Publication Number Publication Date
JPH03287770A true JPH03287770A (ja) 1991-12-18

Family

ID=14002852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9059690A Pending JPH03287770A (ja) 1990-04-05 1990-04-05 枚葉式常圧cvd装置

Country Status (1)

Country Link
JP (1) JPH03287770A (ja)

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US5712001A (en) * 1995-03-20 1998-01-27 Matsushita Electric Industrial Co., Ltd. Chemical vapor deposition process for producing oxide thin films
US20110247556A1 (en) * 2010-03-31 2011-10-13 Soraa, Inc. Tapered Horizontal Growth Chamber
CN102851648A (zh) * 2011-06-30 2013-01-02 三星显示有限公司 原子层沉积设备、密封方法和用于沉积的喷嘴组
US8422525B1 (en) 2009-03-28 2013-04-16 Soraa, Inc. Optical device structure using miscut GaN substrates for laser applications
US8837545B2 (en) 2009-04-13 2014-09-16 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US8837546B1 (en) 2009-05-29 2014-09-16 Soraa Laser Diode, Inc. Gallium nitride based laser dazzling device and method
US8847249B2 (en) 2008-06-16 2014-09-30 Soraa, Inc. Solid-state optical device having enhanced indium content in active regions
US8848755B1 (en) 2010-05-17 2014-09-30 Soraa Laser Diode, Inc. Method and system for providing directional light sources with broad spectrum
US8905588B2 (en) 2010-02-03 2014-12-09 Sorra, Inc. System and method for providing color light sources in proximity to predetermined wavelength conversion structures
US8956894B2 (en) 2008-08-04 2015-02-17 Soraa, Inc. White light devices using non-polar or semipolar gallium containing materials and phosphors
US8971370B1 (en) 2011-10-13 2015-03-03 Soraa Laser Diode, Inc. Laser devices using a semipolar plane
US9013638B2 (en) 2009-05-29 2015-04-21 Soraa Laser Diode, Inc. Laser based display method and system
US9020003B1 (en) 2012-03-14 2015-04-28 Soraa Laser Diode, Inc. Group III-nitride laser diode grown on a semi-polar orientation of gallium and nitrogen containing substrates
US9048170B2 (en) 2010-11-09 2015-06-02 Soraa Laser Diode, Inc. Method of fabricating optical devices using laser treatment
US9071039B2 (en) 2009-04-13 2015-06-30 Soraa Laser Diode, Inc. Optical device structure using GaN substrates for laser applications
US9088135B1 (en) 2012-06-29 2015-07-21 Soraa Laser Diode, Inc. Narrow sized laser diode
US9093820B1 (en) 2011-01-25 2015-07-28 Soraa Laser Diode, Inc. Method and structure for laser devices using optical blocking regions
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US9236530B2 (en) 2011-04-01 2016-01-12 Soraa, Inc. Miscut bulk substrates
US9239427B1 (en) 2008-07-14 2016-01-19 Soraa Laser Diode, Inc. Methods and apparatus for photonic integration in non-polar and semi-polar oriented wave-guided optical devices
US9250044B1 (en) 2009-05-29 2016-02-02 Soraa Laser Diode, Inc. Gallium and nitrogen containing laser diode dazzling devices and methods of use
US9287684B2 (en) 2011-04-04 2016-03-15 Soraa Laser Diode, Inc. Laser package having multiple emitters with color wheel
US9343871B1 (en) 2012-04-05 2016-05-17 Soraa Laser Diode, Inc. Facet on a gallium and nitrogen containing laser diode
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US9531164B2 (en) 2009-04-13 2016-12-27 Soraa Laser Diode, Inc. Optical device structure using GaN substrates for laser applications
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US5876504A (en) * 1995-03-20 1999-03-02 Matsushita Electric Industrial Co., Ltd Process for producing oxide thin films and chemical vapor deposition apparatus used therefor
US5712001A (en) * 1995-03-20 1998-01-27 Matsushita Electric Industrial Co., Ltd. Chemical vapor deposition process for producing oxide thin films
US8847249B2 (en) 2008-06-16 2014-09-30 Soraa, Inc. Solid-state optical device having enhanced indium content in active regions
US9711941B1 (en) 2008-07-14 2017-07-18 Soraa Laser Diode, Inc. Methods and apparatus for photonic integration in non-polar and semi-polar oriented wave-guided optical devices
US9239427B1 (en) 2008-07-14 2016-01-19 Soraa Laser Diode, Inc. Methods and apparatus for photonic integration in non-polar and semi-polar oriented wave-guided optical devices
US8956894B2 (en) 2008-08-04 2015-02-17 Soraa, Inc. White light devices using non-polar or semipolar gallium containing materials and phosphors
USRE47711E1 (en) 2008-08-04 2019-11-05 Soraa, Inc. White light devices using non-polar or semipolar gallium containing materials and phosphors
US8422525B1 (en) 2009-03-28 2013-04-16 Soraa, Inc. Optical device structure using miscut GaN substrates for laser applications
US9531164B2 (en) 2009-04-13 2016-12-27 Soraa Laser Diode, Inc. Optical device structure using GaN substrates for laser applications
US9099844B2 (en) 2009-04-13 2015-08-04 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US10374392B1 (en) 2009-04-13 2019-08-06 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US9735547B1 (en) 2009-04-13 2017-08-15 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US8969113B2 (en) 2009-04-13 2015-03-03 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US9722398B2 (en) 2009-04-13 2017-08-01 Soraa Laser Diode, Inc. Optical device structure using GaN substrates for laser applications
US9941665B1 (en) 2009-04-13 2018-04-10 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US9553426B1 (en) 2009-04-13 2017-01-24 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US11862937B1 (en) 2009-04-13 2024-01-02 Kyocera Sld Laser, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US10862274B1 (en) 2009-04-13 2020-12-08 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US9356430B2 (en) 2009-04-13 2016-05-31 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
US9071039B2 (en) 2009-04-13 2015-06-30 Soraa Laser Diode, Inc. Optical device structure using GaN substrates for laser applications
US10862273B1 (en) 2009-04-13 2020-12-08 Soraa Laser Diode, Inc. Optical device structure using GaN substrates and growth structures for laser applications
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