JP2005298603A - 発光体と、これを用いた電子線検出器、走査型電子顕微鏡及び質量分析装置 - Google Patents
発光体と、これを用いた電子線検出器、走査型電子顕微鏡及び質量分析装置 Download PDFInfo
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- 150000002500 ions Chemical class 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 12
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/244—Detectors; Associated components or circuits therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/025—Detectors specially adapted to particle spectrometers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/244—Detection characterized by the detecting means
- H01J2237/2443—Scintillation detectors
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
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Abstract
【解決手段】 本発明に係る発光体10においては、基板12の一方の面12aに形成された窒化物半導体層14が電子の入射により蛍光を発すると、少なくともこの蛍光の一部は基板12を透過し、基板の他方の面12bから蛍光を出射する。この蛍光の応答速度はμsecオーダー以下である。また、この蛍光の発光強度は、従来のP47蛍光体と同程度の強度が得られている。すなわち、この発光体10は、走査型電子顕微鏡や質量分析装置への適応に十分な応答速度及び発光強度を有している。その上、キャップ層16が窒化物半導体層14における発光の残存率の向上に寄与するため、この発光体10においては、高速応答及び高発光強度だけでなく、優れた残存率も実現されている。
【選択図】 図1
Description
Claims (9)
- 入射する電子を蛍光に変換する発光体であって、
前記蛍光に対して透明な基板と、
前記基板の一方の面に形成され、前記電子の入射により前記蛍光を発する量子井戸構造を有する窒化物半導体層と、
前記窒化物半導体層上に積層され、前記窒化物半導体層の構成材料よりもバンドギャップエネルギの大きな材料で構成されたキャップ層とを備えることを特徴とする発光体。 - 前記量子井戸構造の井戸幅が4nm以下であることを特徴とする請求項1に記載の発光体。
- 前記キャップ層の厚さが10nm以下であることを特徴とする請求項1又は2に記載の発光体。
- 前記窒化物半導体層がInGaN及びGaNで構成されており、前記キャップ層がAlGaNで構成されていることを特徴とする請求項1〜3のいずれか一項に記載の発光体。
- 前記キャップ層上に積層された反射膜をさらに備えることを特徴とする請求項1〜4のいずれか一項に記載の発光体。
- 前記反射膜の厚さが800nm以上であることを特徴とする請求項5に記載の発光体。
- 請求項1〜6のいずれか一項に記載の発光体と、
この発光体が発する前記蛍光に対して感度を有する光検出器とを備えることを特徴とする電子線検出器。 - 請求項1〜6のいずれか一項に記載の発光体と、この発光体が発する前記蛍光に対して感度を有する光検出器とを備えた電子線検出器と、
少なくとも前記発光体が内部に設置された真空チャンバとを備え、
前記真空チャンバ内に配置された試料の表面上を電子線で走査することにより、前記試料から発生した二次電子を前記電子線検出器に導き、前記試料の走査位置と前記電子線検出器の出力とを対応づけることにより前記試料の像を撮影することを特徴とする走査型電子顕微鏡。 - 請求項1〜6のいずれか一項に記載の発光体と、この発光体が発する前記蛍光に対して感度を有する光検出器とを備えた電子線検出器と、
少なくとも前記発光体が内部に配置される真空チャンバと、
前記真空チャンバ内の試料から発生したイオンをその質量に応じて空間的又は時間的に分離する分離部と、
前期分離部で分離されたイオンが照射されるダイノードとを備え、
前記ダイノードへのイオンの入射に応じて前記ダイノードから発生する二次電子を前記電子線検出器に導き、前記電子線検出器の出力から前記試料の質量分析を行うことを特徴とする質量分析装置。
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JP2004114596A JP4365255B2 (ja) | 2004-04-08 | 2004-04-08 | 発光体と、これを用いた電子線検出器、走査型電子顕微鏡及び質量分析装置 |
EP05728391.3A EP1736524B1 (en) | 2004-04-08 | 2005-04-07 | Luminous body, electron beam detector using the same, scanning electron microscope, and mass analysis device |
PCT/JP2005/006870 WO2005097945A1 (ja) | 2004-04-08 | 2005-04-07 | 発光体と、これを用いた電子線検出器、走査型電子顕微鏡及び質量分析装置 |
CNB2005800121452A CN100558849C (zh) | 2004-04-08 | 2005-04-07 | 发光体,及使用其的电子射线检测器、扫描型电子显微镜和质量分析装置 |
US11/547,807 US7910895B2 (en) | 2004-04-08 | 2005-04-07 | Luminous body, electron beam detector using the same, scanning electron microscope, and mass analysis device |
US12/987,341 US8164069B2 (en) | 2004-04-08 | 2011-01-10 | Luminous body, electron beam detector using the same, scanning electron microscope, and mass analysis device |
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JP2004114596A JP4365255B2 (ja) | 2004-04-08 | 2004-04-08 | 発光体と、これを用いた電子線検出器、走査型電子顕微鏡及び質量分析装置 |
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JP2005298603A true JP2005298603A (ja) | 2005-10-27 |
JP4365255B2 JP4365255B2 (ja) | 2009-11-18 |
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EP (1) | EP1736524B1 (ja) |
JP (1) | JP4365255B2 (ja) |
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WO (1) | WO2005097945A1 (ja) |
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2004
- 2004-04-08 JP JP2004114596A patent/JP4365255B2/ja not_active Expired - Lifetime
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2005
- 2005-04-07 US US11/547,807 patent/US7910895B2/en active Active
- 2005-04-07 CN CNB2005800121452A patent/CN100558849C/zh active Active
- 2005-04-07 EP EP05728391.3A patent/EP1736524B1/en not_active Expired - Fee Related
- 2005-04-07 WO PCT/JP2005/006870 patent/WO2005097945A1/ja active Application Filing
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2011
- 2011-01-10 US US12/987,341 patent/US8164069B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP1736524A4 (en) | 2010-09-29 |
CN1946827A (zh) | 2007-04-11 |
US7910895B2 (en) | 2011-03-22 |
US8164069B2 (en) | 2012-04-24 |
US20080116368A1 (en) | 2008-05-22 |
JP4365255B2 (ja) | 2009-11-18 |
WO2005097945A1 (ja) | 2005-10-20 |
EP1736524A1 (en) | 2006-12-27 |
CN100558849C (zh) | 2009-11-11 |
EP1736524B1 (en) | 2017-10-04 |
US20110101219A1 (en) | 2011-05-05 |
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