Luminescent Properties of Dy3+, Ce3+ Co-doped Y3Al5O12 Phosphors

WANG Lin-xiang; SUN De-fang; LI Qing; WANG Xia

doi:10.3788/fgxb20204102.0160

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Luminescent Properties of Dy³⁺, Ce³⁺ Co-doped Y₃Al₅O₁₂ Phosphors

Synthesis and Properties of Materials | 更新时间：2020-08-12

- Luminescent Properties of Dy³⁺, Ce³⁺ Co-doped Y₃Al₅O₁₂ Phosphors
- Chinese Journal of Luminescence Vol. 41, Issue 2, Pages: 160-167(2020)
- 作者机构：
  
  1. 新疆师范大学物理与电子工程学院,新疆乌鲁木齐,830054
  2. 新疆师范高等专科学校(新疆教育学院), 新疆乌鲁木齐 830043
  3. 新疆师范大学矿物发光及其微结构重点实验室,新疆乌鲁木齐,830054
- 作者简介：
- 基金信息：
  
  Supported by Natural Science Foundation of Xinjiang(2017D01A60)
- DOI：10.3788/fgxb20204102.0160
  CLC： O611.4;O482.31
- Received：07 October 2019，
  
  Revised：23 October 2019，
  
  Published Online：19 November 2019，
  
  Published：05 February 2020
- 稿件说明：
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王林香, 孙德方, 李晴等. Dy3+和Ce3+共掺Y3Al5O12荧光粉的制备及发光性质[J]. 发光学报, 2020,41(2): 160-167

WANG Lin-xiang, SUN De-fang, LI Qing etc. Luminescent Properties of Dy3+, Ce3+ Co-doped Y3Al5O12 Phosphors[J]. Chinese Journal of Luminescence, 2020,41(2): 160-167
王林香, 孙德方, 李晴等. Dy3+和Ce3+共掺Y3Al5O12荧光粉的制备及发光性质[J]. 发光学报, 2020,41(2): 160-167 DOI： 10.3788/fgxb20204102.0160.

WANG Lin-xiang, SUN De-fang, LI Qing etc. Luminescent Properties of Dy3+, Ce3+ Co-doped Y3Al5O12 Phosphors[J]. Chinese Journal of Luminescence, 2020,41(2): 160-167 DOI： 10.3788/fgxb20204102.0160.

摘要

用高温固相法制备了YAG:5% Dy

以及（Ce

0.01

0.99-

）

（

=0%，1%，3%，5%，7%，9%）荧光粉。XRD结果表明，NH

Cl、LiCl、H

三种助熔剂比较，添加H

可有效降低YAG晶体的结晶温度，有效阻止中间相YAlO

的形成。H

做助熔剂在1 450℃煅烧6 h制备的Dy

和Ce

掺杂Y

荧光粉具有单一YAG立方相结构，且随Dy

掺杂浓度增加，（420）衍射峰逐渐向小角度偏移。在583 nm监测下；与单掺1% Ce

样品比较，Ce

与Dy

共掺样品在342 nm处的吸收均减弱；与单掺5% Dy

样品比较，Ce

与Dy

共掺样品在351 nm处的吸收明显增强。351 nm激发下，随Dy

掺杂浓度增加，Ce

与Dy

共掺样品中Ce

在526 nm处的发射强度逐渐减小，而在583 nm处的发射强度先增加后减弱，这说明351 nm激发下，Ce

与Dy

共掺样品中存在Ce

向Dy

的部分能量传递。465 nm激发下，Ce

与Dy

共掺杂样品中只出现Ce

的发射峰，且随Dy

浓度增加，Ce

发光减弱。当Dy

离子浓度为3%时，Ce

与Dy

共掺样品中Dy

相对光强达到最大，此时Ce

能量传递效率为15.7%。405 nm激发下，随Dy

掺杂浓度增加，合成粉体中Ce

的寿命逐渐减小。经计算，Ce

能量传递临界距离为3.464 nm，为电四极-电四极相互作用的共振能量传递。

Abstract

YAG:5%Dy

and (Ce

0.01

0.99-

)

(

=0%

9%) phosphors were prepared by high temperature solid-state method. XRD results showed that the addition of H

could effectively reduce the crystallization temperature of YAG crystal and prevent the formation of the intermediate phase YAlO

. The results showed that they were still the cubic phase of the samples for Dy

doped Y

by adding H

after calcination at 1 450℃ for 6 h. With the increase of Dy

doping concentration

the main diffraction peak (420) shifted to a small angle. Under

=583 nm

the absorptions of Ce

and Dy

co-doped samples at 342 nm were decreased than that of only Ce

doped sample

and the absorptions at 351 nm significantly enhanced compared with that of only Dy

doped sample. Under 351 nm excitation

with the increase of Dy

doping concentration

the emission intensities at 526 nm decreased for Dy

and Ce

co-doped Y

samples

but the emission intensities at 583 nm first increased and then decreased

which indicated that under the excitation of 351 nm

part of the energy transfer from Ce

to Dy

existed. Under 465 nm excitation

and Dy

co-doped samples only contained Ce

emission peak

and with the increase of Dy

concentration

emissions of Ce

ions decreased. When the concentration of Dy

was 3%

the emission intensity of Dy

reached the maximum

and the energy transfer efficiency of Ce

was 15.7%. Under 405 nm excitation

with the increase of Dy

concentration

the lifetime of Ce

decreased for Ce

and Dy

co-doped samples. The critical distance of Ce

energy transfer was 3.464 nm

which was the resonance energy transfer of the electric quadrupole-electric quadrupole interaction.

关键词

Keywords

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