Thermoluminescence Characteristics of MgB4O7 Doped with Dy or Tb

CHEN Guo-yun; TANG Qiang; ZHANG Chun-xiang

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Thermoluminescence Characteristics of MgB₄O₇ Doped with Dy or Tb

更新时间：2020-08-11

- Thermoluminescence Characteristics of MgB₄O₇ Doped with Dy or Tb
- Chinese Journal of Luminescence Vol. 27, Issue 3, Pages: 313-319(2006)
- 作者机构：
  
  中山大学物理科学与工程技术学院,广东广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC： O483.31;TL816.7
- Received：28 April 2005，
  
  Revised：21 June 2005，
  
  Published：20 May 2006
- 稿件说明：
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陈国云, 唐强, 张纯祥. Dy或Tb掺杂的MgB4O7磷光体的热释光特性[J]. 发光学报, 2006,27(3): 313-319

CHEN Guo-yun, TANG Qiang, ZHANG Chun-xiang. Thermoluminescence Characteristics of MgB4O7 Doped with Dy or Tb[J]. Chinese Journal of Luminescence, 2006,27(3): 313-319
陈国云, 唐强, 张纯祥. Dy或Tb掺杂的MgB4O7磷光体的热释光特性[J]. 发光学报, 2006,27(3): 313-319 DOI：

CHEN Guo-yun, TANG Qiang, ZHANG Chun-xiang. Thermoluminescence Characteristics of MgB4O7 Doped with Dy or Tb[J]. Chinese Journal of Luminescence, 2006,27(3): 313-319 DOI：

摘要

用高温固相反应法研制了MgB

:Dy和MgB

:Tb两种热释光材料.用自制的三维热释光谱仪测量了两种磷光体的三维发光谱

从MgB

:Dy磷光体的三维发光谱观察到:1.热释光发光峰峰温为220

380℃;2.Dy

离子的发光波长为480

575

660nm;3.220

380℃发光峰的相对强度随高温固相反应温度的升高而变化

但发光峰温和波长基本保持不变.由MgB

:Tb磷光体的三维发光谱可看到在230

340

420℃附近有三个发光峰

发光谱线波长分别为489

543

589

620nm.不同的高温烧结温度不仅对发光峰的发光强度有很大影响

而且还对Tb

发光谱形产生影响

当温度高于850℃时Tb

离子发光谱线开始变成了发光谱带.此外

对比MgB

:Dy和MgB

:Tb两种热释光材料的二、三维发光谱

得出了掺入三价稀土离子的热释光材料的发光峰峰温主要由基质材料决定

发光波长则取决于稀土离子的4f电子能级间的跃迁.

Abstract

Two thermoluminescence(TL)materials MgB

:Dy and MgB

:Tb were synthesized under the condition of high temperature.The 3-dimensional(3D)TL spectra of two materials were measured by the 3D TL spectrometer made in the laboratory.From the 3D TL spectra of MgB

:Dy

we can conclude:there are two TL glow peaks at about 220 and 380℃ and the wavelengths of the TL emission spectra are 480

575

660 nm.The intensity ratio of glow peak at about 220℃ to that at 380℃ can be raised gradually by high temperature treatment.However

the temperature and wavelength of the glow peaks have no obvious change.From the 3D spectra of MgB

:Tb

we can conclude:there are three TL peaks at about 230

360 and 420℃ and the wavelengths of the TL emission spectra is 489

543

589

620 nm.Different sintered temperature affects not only the TL sensitivity of MgB

:Tb

but also the spectral shape of the 3D TL spectra.When the temperature is higher than 850℃

the spectral line of Tb

turns to the spectral band.By comparing the TL glow curve and emission spectra between MgB

:Dy and MgB

:Tb

we can conclude that in the TL material doped with trivalence rare earth ions

the temperature of the glow peak is mainly decided by the host and the emission wavelength of the glow peak is mainly due to the transition of the energy level of the rare earth ions.

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