Sol-gel Synthesis and Scintillation Properties of Lu2Si2O7∶Ce Nanocrystalline

LI Qian-li; HU Ya-hua; MA Yu-bin; HUANG Shi-ming; GU Mu; ZHANG Zhi-jun; ZHAO Jing-tai

doi:10.3788/fgxb20204104.0364

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Sol-gel Synthesis and Scintillation Properties of Lu₂Si₂O₇∶Ce Nanocrystalline

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

- Sol-gel Synthesis and Scintillation Properties of Lu₂Si₂O₇∶Ce Nanocrystalline
- Chinese Journal of Luminescence Vol. 41, Issue 4, Pages: 364-370(2020)
- 作者机构：
  
  1. 上海大学材料科学与工程学院
  2. 嘉兴学院南湖学院
  3. 同济大学物理科学与工程学院
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11475128,11675121,11905122
- DOI：10.3788/fgxb20204104.0364
  CLC： O482.3
- Received：03 January 2020，
  
  Revised：2020-1-22，
  
  Online First：18 February 2020，
  
  Published：05 April 2020
- 稿件说明：
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李乾利, 胡亚华, 马玉彬等. Lu2Si2O7∶Ce纳米晶的溶胶-凝胶法合成和闪烁性能[J]. 发光学报, 2020,41(4): 364-370

LI Qian-li, HU Ya-hua, MA Yu-bin etc. Sol-gel Synthesis and Scintillation Properties of Lu2Si2O7∶Ce Nanocrystalline[J]. Chinese Journal of Luminescence, 2020,41(4): 364-370
李乾利, 胡亚华, 马玉彬等. Lu2Si2O7∶Ce纳米晶的溶胶-凝胶法合成和闪烁性能[J]. 发光学报, 2020,41(4): 364-370 DOI： 10.3788/fgxb20204104.0364.

LI Qian-li, HU Ya-hua, MA Yu-bin etc. Sol-gel Synthesis and Scintillation Properties of Lu2Si2O7∶Ce Nanocrystalline[J]. Chinese Journal of Luminescence, 2020,41(4): 364-370 DOI： 10.3788/fgxb20204104.0364.

摘要

采用溶胶-凝胶法制备了Lu

∶Ce纳米晶，利用X射线衍射（XRD）、扫描电镜（SEM）、荧光光谱仪、X射线激发发射谱仪对制备的Lu

∶Ce纳米晶的晶相结构、微观形貌和光学性能进行了表征。结果表明，溶胶-凝胶法制备的Lu

∶Ce前驱体在煅烧温度为1 000℃时开始晶化，晶粒尺寸随着煅烧温度的升高而变大，1 200℃煅烧2 h后的晶体颗粒均匀，分散性最优，平均晶粒尺寸约为28.9 nm，呈近球形；Lu

∶Ce纳米晶的紫外吸收谱存在峰位分别为304 nm和350 nm两个吸收峰，源自于Ce

离子的4f

rarr;5d跃迁；光致发射谱和X射线激发发射谱都表现为典型的非对称双峰结构，归属于Ce

离子的5d

rarr;

5/2

和5d

rarr;

7/2

跃迁，Ce

离子的最佳掺杂浓度约为1%；荧光衰减时间约为37.2 ns，可满足高时间分辨X射线探测需要。

Abstract

Synthesis and Properties of Materials

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references

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