Al2O3_Eu3+的微波水热合成及室温光致发光性能研究.doc


Al2O3:Eu3+的微波水热合成及室温光致发
光性能研究#
朱振峰,刘佃光,李广军,刘辉,何作利*
5
10
(陕西科技大学材料科学与工程学院,西安 710021)
摘要:以氯化铝和氢氧化钠为原料,十六烷基三甲基溴化铵(CTAB)为模板剂,采用微波
水热法制备 Al2O3:Eu3+红色发光材料。通过 SEM, XRD 和光致发光光谱对系列样品的形貌、
物相、发光性质进行表征。SEM 显示样品形貌为片组装成的微球,煅烧后的得到的样品的
粒径约为 ;XRD 测试结果表明:合成的样品为γ-Al2O3; 光致发光测试表明:
Al2O3:Eu3+的发射以 594 nm 的 5D0→7F1 磁偶极跃迁为主,最佳激发波长为 394 nm。随着
掺杂浓度的增大,样品 5D0→7F2 电偶极跃迁强度变大,掺杂量为 mol%的样品在 618 nm
的 5D0→7F2 电偶极跃迁强度明显提高。
关键词:微波水热法;荧光粉;Al2O3:Eu3+;发光
中图分类号:
15
Microwave hydrothermal synthesis and photoluminescence
properties of Al2O3:Eu3+ phosphors
ZHU Zhenfeng, LIU Dianguang, LI Guangjun, LIU Hui, HE Zuoli
(School of Materials Science and Engineering, Shaanxi University of Science and Technology,
20
25
30
35
Xi'an 710021)
Abstract: The Eu3+ doped Al2O3 red phosphors materials was prepared via microwave hydrothermal
method, by using AlCl3·6H2O, NaOH as raw materials and cetyltrimethyl ammonium bromide (CTAB)
as surfactant, respectively. The as-prepared products were characterized by SEM, XRD and
luminescence spectroscopy. SEM showed that the particles of Al2O3:Eu3+ was a spherical shape
packaged by nanosheets with diameter about . XRD results indicated that Eu3+ doped sample
was γ- Al2O3 . The results of photoluminescence displayed that the main emission peaks of
Al2O3:Eu3+ could be assigned to the magic dipole transition 5D0→7F1 (594 nm) and 394 nm was