Understanding of optical luminescence mechanism of phosphors by establishment of X-ray luminescence holography

通过建立X射线发光全息术了解荧光粉的光学发光机理

基本信息

项目摘要

X-ray excited optical luminescence (XEOL) has been applied to the site selective XAFS measurements. On the other hand, atomic resolution x-ray holography, which can determine local structure around a specified atom, normally uses the x-ray fluorescence. Before starting this project, there has been no idea of the use of XEOL for othe X-ray holography. To explore new analytical possibility of the XEOL application, we focused on X-ray incident beam angular anisotropy of the XEOL intensity and studied a feasibility of atomic resolution X-ray holography. A ZnO epitaxial film on Al_2O_3 (sapphire) single crystal was adopted for the sample in the present study, because the XEOL is known to be occurred for ZnO and sapphire. The experiments were done at the synchrotron radiation facility SPring-8. The observed intensity variation of the XEOL corresponded to the hologram pattern of Al_2O_3 substrate, which was different from the X-ray fluorescence hologram pattern of Zn Kα. In order to attribute … More the XEOL hologram, we estimated positions and amplitudes of the X-rat standing wave lines observed in the hologram patterns by averaging over a given direction of reciprocal lattice space. Measurement of the XEOL spectrum from the ZnO/Al_2O_3 showed that the luminescence from sapphire was dominant, and this was consistent with the result of the XEOL hologram. The X-ray holography measurement using x-ray fluorescence is generally difficult for light elements, such as Al or Si, because of its low cross section for inner shell ionization and the absorption by air. The present study demonstrates that hard x-ray holography measurement for light element can be easily carried out using XEOL. Moreover, we found that the ZnO/AL_2O_3 sample used here emit the strong ultraviolet luminescence (373 nm), which corresponded to bang gap of ZnO thin film, by cooling to 100 K. By selecting the luminescence from ZnO thin film using a grating monochromator, the hologram pattern of ZnO layer could be recorded. Less
X射线激发光致发光(XEOL)已被应用于XAFS的择位测量。另一方面,原子分辨率X射线全息术,它可以确定特定原子周围的局部结构,通常使用X射线荧光。在开始这个项目之前,还没有将XEOL用于其他X射线全息术的想法。为了探索XEOL应用的新的分析可能性,我们重点研究了XEOL强度的X射线入射光束角各向异性,并研究了原子分辨率X射线全息的可行性。由于ZnO和蓝宝石都存在XEOL现象,因此本研究采用在Al_2O_3(蓝宝石)单晶上外延ZnO薄膜作为样品。实验在同步辐射装置SPring-8上进行。观察到的XEOL的强度变化对应于Al_2O_3衬底的全息图,这与Zn Kα的X射线荧光全息图不同。为了将 ...更多信息 XEOL全息图,我们估计的位置和振幅的X-rat驻波线观察到的全息图图案通过平均在一个给定的方向的倒易晶格空间。对ZnO/Al_2O_3的XEOL光谱的测量表明,蓝宝石的发光占主导地位,这与XEOL全息图的结果一致。对于轻元素,如Al或Si,由于其内壳电离的小截面和被空气吸收,使用X射线荧光的X射线全息测量通常是困难的。本研究表明,硬X射线全息测量轻元素可以很容易地进行使用XEOL。此外,我们还发现所用的ZnO/Al_2O_3样品在冷却到100 K时,发射出强的紫外光(373 nm),这与ZnO薄膜的禁带宽度相对应。利用光栅单色仪对ZnO薄膜的发光进行选择,记录了ZnO薄膜的全息图。少

项目成果

期刊论文数量(26)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
X-ray Fluorescence Holography Study on Si1-xGex Single Crystal
Si1-xGex单晶的X射线荧光全息研究
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Y.Kawakita;Y.Kato;S.Takeda;Takeshi Nagase;A.Beraud;Takeshi Nagase;Takeshi Nagase;K.Hayashi
  • 通讯作者:
    K.Hayashi
Three-dimensional atomic image around Mn atoms in dilute magnetic semiconductor Zn_<0.4>Mn_<0.6>Te obtained by X-ray fluorescence holography
X射线荧光全息技术获得稀磁半导体Zn_<0.4>Mn_<0.6>Te中Mn原子周围的三维原子图像
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    S.Hosokawa;N.Happo;K.Hayashi;Y.Takahashi;T.Ozaki;K.Horii;E.Matsubara
  • 通讯作者:
    E.Matsubara
X線分光ホログラフィーで磁区構造を見る
使用 X 射线光谱全息术观察磁畴结构
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Y.Takahashi et al.;T.Sekioka et al.;K.Hayashi;K.Hayashi et al.;林 好一
  • 通讯作者:
    林 好一
X線励起発光を用いた新しい原子分解能ホログラフィー法の開発
利用 X 射线激发发射开发新的原子分辨率全息术方法
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    K.Hayashi;T.Hayashi;Y.Takahashi;S.Shigeru;E.Matsubara;Y.Takahashi et al.;Y.Takahashi et al.;K.Hayashi et al.;S.Hosokawa et al.;林徹太郎 他
  • 通讯作者:
    林徹太郎 他
Atomic imaging in EBCO superconductor films by an X-ray holography system using a toroidally bent graphite analyzer
使用环形弯曲石墨分析仪通过 X 射线全息系统对 EBCO 超导薄膜进行原子成像
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MATSUBARA Eiichiro其他文献

MATSUBARA Eiichiro的其他文献

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{{ truncateString('MATSUBARA Eiichiro', 18)}}的其他基金

Development of structure inhomogeneity of metallic glasses analyzed by X-ray diffraction, inelastic X-ray scattering and viscoelatsic
通过 X 射线衍射、非弹性 X 射线散射和粘弹性分析金属玻璃结构不均匀性的发展
  • 批准号:
    21246094
  • 财政年份:
    2009
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
In-situ observation of 3 dimensional meso-scopic structures of metallic materials by coherent x-ray diffraction microscopy
用相干X射线衍射显微镜原位观察金属材料的三维细观结构
  • 批准号:
    18360304
  • 财政年份:
    2006
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Hamos-type X-ray micro-analyzer using a cylindrically, bent graphite monochromator
使用圆柱形弯曲石墨单色仪开发Hamos型X射线显微分析仪
  • 批准号:
    12555170
  • 财政年份:
    2000
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Developmental Scientific Research of Radiograph with Elemental Selectivity
元素选择性射线照相科学研究进展
  • 批准号:
    10555211
  • 财政年份:
    1998
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Structural Study of Thin Amorphous SiO_2 and Si_3N_4 Films by the Grazing Incidence X-ray Scattering (GIXS) Method
掠入射X射线散射(GIXS)法研究非晶SiO_2和Si_3N_4薄膜的结构
  • 批准号:
    08455290
  • 财政年份:
    1996
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of New In-house Grazing Incidence X-ray Scattering Apparatus for Analyzing Liquid Surface and Interface
开发用于分析液体表面和界面的新型内部掠入射 X 射线散射仪
  • 批准号:
    06555178
  • 财政年份:
    1994
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)
New Method for Analyzing the Periodic Structure of Multilayr by Diffeirential anomalous Small-Angle X-ray Scatering
微分反常小角X射线散射分析多层膜周期结构的新方法
  • 批准号:
    05805052
  • 财政年份:
    1993
  • 资助金额:
    $ 9.79万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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Life time imaging with pulsed x-ray based x-ray luminescence computed tomography
基于脉冲 X 射线的 X 射线发光计算机断层扫描的寿命成像
  • 批准号:
    10307274
  • 财政年份:
    2018
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    $ 9.79万
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Dual Modality X-ray Luminescence CT for in vivo Cancer Imaging
用于体内癌症成像的双模态 X 射线发光 CT
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    10530681
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    2018
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    $ 9.79万
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Focused-x-ray Luminescence at uCT Resolution and uM-level Sensitivity
uCT 分辨率和 uM 级灵敏度的聚焦 X 射线发光
  • 批准号:
    9891055
  • 财政年份:
    2018
  • 资助金额:
    $ 9.79万
  • 项目类别:
Dual Modality X-ray Luminescence CT for in vivo Cancer Imaging
用于体内癌症成像的双模态 X 射线发光 CT
  • 批准号:
    10089148
  • 财政年份:
    2018
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    $ 9.79万
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Dual Modality X-ray Luminescence CT for in vivo Cancer Imaging
用于体内癌症成像的双模态 X 射线发光 CT
  • 批准号:
    10360435
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Microscopic X-ray Luminescence Computed Tomography
显微 X 射线发光计算机断层扫描
  • 批准号:
    9223703
  • 财政年份:
    2016
  • 资助金额:
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X-ray Luminescence Optical Tomography for Small Animal Imaging
用于小动物成像的 X 射线发光光学断层扫描
  • 批准号:
    8176962
  • 财政年份:
    2011
  • 资助金额:
    $ 9.79万
  • 项目类别:
X-ray Luminescence Optical Tomography for Small Animal Imaging
用于小动物成像的 X 射线发光光学断层扫描
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    8299553
  • 财政年份:
    2011
  • 资助金额:
    $ 9.79万
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