Luminescence properties of an orange-red phosphor GdAl3(BO3)(4):Sm3+ under VUV excitation and energy transfer from Gd3+ to Sm3+
Luminescence properties of an orange-red phosphor GdAl3(BO3)(4):Sm3+ under VUV excitation and energy transfer from Gd3+ to Sm3+
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DOI：
10.1016/j.optmat.2014.11.002
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发表时间：
2015
影响因子：
3.9
通讯作者：
Jin He;Su Zhang;Jianbang Zhou;Jiuping Zhong;Hongbin Liang;Shuaishuai Sun;Yan Huang;Ye Tao
中科院分区：
文献类型：
--
作者：
Jin He;Su Zhang;Jianbang Zhou;Jiuping Zhong;Hongbin Liang;Shuaishuai Sun;Yan Huang;Ye Tao
为了开发真空紫外(VUV)激发下的新型暖色荧光粉，采用高温固相反应技术制备了三价钐离子(Sm3+)掺杂的GdAl3(BO3)4。合成样品 GdAl3(BO3)4:Sm3+ 的 VUV 激发和发射光谱在北京同步辐射装置 (BSRF) 中测定。与GdAl3(BO3)4:Eu3+的发射相比，GdAl3(BO3)4:Sm3+在Xe 172 nm VUV激发下显示出橙红色发射，这表明Sm3+离子可以作为在照明领域获得暖色发射的可能的激活剂。此外，为了改善GdAl3(BO3)4中掺杂Sm3+的发射，通过分析GdAl3(BO3)4:Sm3+的光谱特性和发光衰减曲线，研究了从主体中的Gd3+到活化剂Sm3+的能量转移过程。结果表明，存在从Gd3+到Sm3+的能量转移，但从Sm3+到Gd3+的能量转移效率较低。
In order to develop a new warm-color emission phosphor under vacuum ultraviolet (VUV) excitation, trivalent samarium ion (Sm3+) doped GdAl3(BO3)4was prepared by a solid state reaction technique at high temperature. The VUV excitation and emission spectra of as-synthesized sample GdAl3(BO3)4:Sm3+were determined in the Beijing Synchrotron Radiation Facilities (BSRF). Compared with the emission of GdAl3(BO3)4:Eu3+, GdAl3(BO3)4:Sm3+shows an orange-red emission under Xe 172 nm VUV excitation, which indicates that Sm3+ion can be a possible activator to obtain warm color emission in the field of lighting. Furthermore, for improving the emission of Sm3+doped in GdAl3(BO3)4, the energy transfer process from Gd3+in the host to the activator Sm3+was investigated through the analysis of spectroscopic characteristics and luminescence decay curves of GdAl3(BO3)4:Sm3+. The results reveal that there exists energy transfer from Gd3+to Sm3+, but the energy transfer from Sm3+to Gd3+is inefficient.