Color Tunable Silicate Long-lasting Afterglow Phosphors: Ba4(Si3O8)2∶Eu2+,Ce3+,Dy3+

GONG Yu; WANG Ming-xiao; REN Jian-bo; WANG Yu-hua

doi:10.3788/fgxb20123309.0973

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Color Tunable Silicate Long-lasting Afterglow Phosphors: Ba₄(Si₃O₈)₂∶Eu²⁺,Ce³⁺,Dy³⁺

更新时间：2020-08-12

- Color Tunable Silicate Long-lasting Afterglow Phosphors: Ba₄(Si₃O₈)₂∶Eu²⁺,Ce³⁺,Dy³⁺
- Chinese Journal of Luminescence Vol. 33, Issue 9, Pages: 973-978(2012)
- 作者机构：
  
  1. 兰州大学物理科学与技术学院,甘肃兰州,730000
  2. 兰州军区信息工程科技创新工作站,甘肃兰州,730020
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123309.0973
  CLC： O482.31
- Received：17 May 2012，
  
  Revised：12 July 2012，
  
  Published：10 September 2012
- 稿件说明：
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龚宇, 王明孝, 任建波, 王育华. 发光颜色可调的硅酸盐长余辉发光材料 Ba4(Si3O8)2∶Eu2+,Ce3+,Dy3+[J]. 发光学报, 2012,33(9): 973-978

GONG Yu, WANG Ming-xiao, REN Jian-bo, WANG Yu-hua. Color Tunable Silicate Long-lasting Afterglow Phosphors: Ba4(Si3O8)2∶Eu2+,Ce3+,Dy3+[J]. Chinese Journal of Luminescence, 2012,33(9): 973-978
龚宇, 王明孝, 任建波, 王育华. 发光颜色可调的硅酸盐长余辉发光材料 Ba4(Si3O8)2∶Eu2+,Ce3+,Dy3+[J]. 发光学报, 2012,33(9): 973-978 DOI： 10.3788/fgxb20123309.0973.

GONG Yu, WANG Ming-xiao, REN Jian-bo, WANG Yu-hua. Color Tunable Silicate Long-lasting Afterglow Phosphors: Ba4(Si3O8)2∶Eu2+,Ce3+,Dy3+[J]. Chinese Journal of Luminescence, 2012,33(9): 973-978 DOI： 10.3788/fgxb20123309.0973.

摘要

在还原气氛下利用高温固相法制备了Ba

3.982-

(Si

)

∶0.008Eu

0.01Dy

系列样品。光谱分析表明

进入到晶格中将取代不同Ba

格位从而形成不同的发光中心。通过Ce

→Eu

的能量传递

得到了一系列发光颜色可调、余辉颜色为绿色的长余辉发光材料。Ce

的掺入可以增大样品的余辉强度但是同时缩短了样品的余辉时间。热释光谱的分析表明

的掺入可以同时增加浅陷阱T

和深陷阱T

的数量

深陷阱对载流子的再捕获效应导致了样品余辉强度的增大和余辉时间的缩短。

Abstract

Long afterglow phosphors Ba

3.982-

(Si

)

∶0.008Eu

0.01Dy

were prepared by solid-state reactions under a weak reductive atmosphere. The photoluminescence spectra showed that two types of Ce

centers existed in the Ba

(Si

)

lattice due to Ce

could occupied two different Ba

sites. Through the energy transfer between Ce

and Eu

multicolor fluorescence and green phosphorescence can be got. Co-doping of Ce

can increase the afterglow intensity

however

decrease the duration of Ba

(Si

)

∶Eu

. Through the analysis of the thermoluminescence curves

the co-doped of Ce

can increase the number of shallow (T

) and deep traps(T

). As the re-trapping of the deep trap

the duration of the phosphor decreased and the intensity of the afterglow increased.

关键词

Keywords

references

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