JPH05326437A - Counting method of implanted amount in ion-implantation apparatus - Google Patents

Counting method of implanted amount in ion-implantation apparatus

Info

Publication number
JPH05326437A
JPH05326437A JP13035192A JP13035192A JPH05326437A JP H05326437 A JPH05326437 A JP H05326437A JP 13035192 A JP13035192 A JP 13035192A JP 13035192 A JP13035192 A JP 13035192A JP H05326437 A JPH05326437 A JP H05326437A
Authority
JP
Japan
Prior art keywords
amount
ion
counting
ions
target
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
JP13035192A
Other languages
Japanese (ja)
Inventor
Kazuyuki Amano
和幸 天野
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.)
NEC Yamagata Ltd
Original Assignee
NEC Yamagata 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 NEC Yamagata Ltd filed Critical NEC Yamagata Ltd
Priority to JP13035192A priority Critical patent/JPH05326437A/en
Publication of JPH05326437A publication Critical patent/JPH05326437A/en
Pending legal-status Critical Current

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  • Physical Vapour Deposition (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

PURPOSE:To prevent that an implanted amount is counted erroneously due to a fluctuation in the amount of the electric charge of an ion beam in the counting method of the implanted amount in an ion-implantation apparatus. CONSTITUTION:A method which counts an implanted amount uses the following: a target 5 which generates X-rays 6 when it receives an ion beam 3; and an X-ray analyzer 7 which analyzes and counts the X-rays 6 generated in proportion to the number of ions.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はイオン注入装置の注入量
カウント方法に関し、特にX線分析器を用いた注入量カ
ウント方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for counting an implantation dose in an ion implantation system, and more particularly to a method for counting an implantation dose using an X-ray analyzer.

【0002】[0002]

【従来の技術】イオン注入装置の従来の注入量カウント
方法を以下に示す。図2の装置構成図に示すように、イ
オン源1で発生し質量分析部2で選択されたイオンビー
ム3は、インプラントディスク4に固定された半導体ウ
ェーハに注入されるわけであるが、その注入量の測定
は、インプラントディスク4に遮られない場合にターゲ
ット5に衝突するイオンの数を、イオンの総電荷量とし
てビーム電流計8で積算することによりカウントしてい
た。
2. Description of the Related Art A conventional method of counting the implantation amount of an ion implantation apparatus is shown below. As shown in the apparatus configuration diagram of FIG. 2, the ion beam 3 generated by the ion source 1 and selected by the mass spectrometric section 2 is injected into the semiconductor wafer fixed to the implant disk 4. The amount was measured by integrating the number of ions that collide with the target 5 when the implant disk 4 is not blocked by the beam ammeter 8 as the total charge amount of the ions.

【0003】[0003]

【発明が解決しようとする課題】この従来の注入量カウ
ント方法では、半導体ウェーハへの注入量のカウントを
ターゲットに衝突したイオンのもつ総電荷量を測定する
ことにより行っているため、イオンビームが質量分析さ
れた後に真空チャンバー内の残留ガスとの衝突等により
++からP+ ,P+ からP等の電荷の移行が生じた場
合、注入量のカウントが実際の注入量からずれてしま
い、目標とする注入量が得られないという問題点があっ
た。
In this conventional implantation dose counting method, since the implantation dose to the semiconductor wafer is counted by measuring the total charge amount of the ions colliding with the target, the ion beam P + a P ++ by collision with the residual gas in the vacuum chamber after being mass spectrometry, when the migration of the charge, such as P, from P + occurs, the injection amount of the count is shifted from the actual injection quantity However, there is a problem that the target injection amount cannot be obtained.

【0004】[0004]

【課題を解決するための手段】本発明の注入量のカウン
ト方法は、イオンビームがターゲットと衝突した際に、
イオンのもつ電荷量に無関係に、衝突したイオンの数に
比例してX線が発生することを利用して、発生したX線
をX線分析器によりカウントすることにより半導体ウェ
ーハへの注入量を間接的に測定する方法である。
The method of counting the implantation dose according to the present invention is designed so that when an ion beam collides with a target,
Utilizing the fact that X-rays are generated in proportion to the number of colliding ions, regardless of the charge amount of the ions, by counting the generated X-rays with an X-ray analyzer, This is an indirect measurement method.

【0005】[0005]

【実施例】次に本発明について図面を参照して説明す
る。図1は本発明の一実施例を説明するための装置構成
図である。本実施例の注入量カウント方法は、注入する
イオンビーム3をターゲット5に衝突させることにより
発生するX線をX線分析器7でカウントし、インプラン
トディスク4に固定された半導体ウェーハの注入量を間
接的に測定するというものである。
The present invention will be described below with reference to the drawings. FIG. 1 is a device configuration diagram for explaining one embodiment of the present invention. In the implantation amount counting method of the present embodiment, the X-ray analyzer 7 counts the X-rays generated by colliding the ion beam 3 to be implanted with the target 5 to determine the implantation amount of the semiconductor wafer fixed to the implant disk 4. It is to measure indirectly.

【0006】ターゲット5にイオンビーム3が衝突する
際に発生するX線量は、イオンのもつ電荷量に無関係に
衝突したイオンの数に比例するため、イオンが質量分析
された後に真空チャンバー内の残留ガスとの衝突により
電荷の移行が生じた場合でも、注入量のカウントと実際
の注入量とのずれはなく、安定して目標とする注入量が
得られる。
Since the X-ray dose generated when the ion beam 3 collides with the target 5 is proportional to the number of colliding ions regardless of the charge amount of the ions, the ions remain in the vacuum chamber after mass analysis. Even if the charge transfer occurs due to collision with the gas, there is no difference between the count of the injection amount and the actual injection amount, and the target injection amount can be stably obtained.

【0007】[0007]

【発明の効果】以上説明したように本発明の注入量のカ
ウント方法では、イオンビームがターゲットに衝突した
際に、イオンのもつ電荷量と無関係にターゲットに衝突
したイオンの数に比例して発生するX線をX線分析器に
よってカウントすることにより、半導体ウェーハに注入
された総注入量を間接的に測定しているため、真空チャ
ンバー内の真空度に無関係に安定した注入量のカウント
が行える。
As described above, according to the method of counting the implantation amount of the present invention, when the ion beam collides with the target, it is generated in proportion to the number of ions colliding with the target regardless of the charge amount of the ions. Since the total injection amount injected into the semiconductor wafer is indirectly measured by counting the number of X-rays to be injected by the X-ray analyzer, the stable injection amount can be counted regardless of the degree of vacuum in the vacuum chamber. ..

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を説明するための装置の構成
図である。
FIG. 1 is a configuration diagram of an apparatus for explaining an embodiment of the present invention.

【図2】従来のカウント方法を説明するための装置の構
成図である。
FIG. 2 is a configuration diagram of an apparatus for explaining a conventional counting method.

【符号の説明】[Explanation of symbols]

1 イオン源 2 質量分析部 3 イオンビーム 4 インプラントディスク 5 ターゲット 6 X線 7 X線分析器 8 ビーム電流計 1 ion source 2 mass spectrometric section 3 ion beam 4 implant disk 5 target 6 X-ray 7 X-ray analyzer 8 beam ammeter

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 半導体ウェーハに不純物イオンを注入す
るイオン注入装置の注入量カウント方法において、イオ
ンビームをターゲットに衝突させ、イオンの数に比例し
て発生するX線をX線分析器によりカウントし、半導体
ウェーハへのイオン注入量を間接的に測定することを特
徴とするイオン注入装置の注入量カウント方法。
1. A method of counting an implantation amount of an ion implantation apparatus for implanting impurity ions into a semiconductor wafer, wherein an X-ray analyzer counts X-rays generated in proportion to the number of ions by colliding an ion beam with a target. , A method for counting the amount of ion implantation in a semiconductor wafer, which indirectly measures the amount of ion implantation.
JP13035192A 1992-05-22 1992-05-22 Counting method of implanted amount in ion-implantation apparatus Pending JPH05326437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13035192A JPH05326437A (en) 1992-05-22 1992-05-22 Counting method of implanted amount in ion-implantation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13035192A JPH05326437A (en) 1992-05-22 1992-05-22 Counting method of implanted amount in ion-implantation apparatus

Publications (1)

Publication Number Publication Date
JPH05326437A true JPH05326437A (en) 1993-12-10

Family

ID=15032320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13035192A Pending JPH05326437A (en) 1992-05-22 1992-05-22 Counting method of implanted amount in ion-implantation apparatus

Country Status (1)

Country Link
JP (1) JPH05326437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7834422B2 (en) * 2004-05-18 2010-11-16 Qucor Pty. Ltd. Implanted counted dopant ions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5376759A (en) * 1976-12-20 1978-07-07 Ibm Ion implantation device
JPS55159555A (en) * 1979-05-31 1980-12-11 Fujitsu Ltd Ion injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5376759A (en) * 1976-12-20 1978-07-07 Ibm Ion implantation device
JPS55159555A (en) * 1979-05-31 1980-12-11 Fujitsu Ltd Ion injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7834422B2 (en) * 2004-05-18 2010-11-16 Qucor Pty. Ltd. Implanted counted dopant ions

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