摘要
采用高温固相法合成了一系列的GdBO3∶Ce^3+,xTb^3+荧光粉,研究了所合成荧光粉的晶体结构,发光性质和量子效率.结果表明,GdBO3∶Ce^3+,xTb^3+荧光粉的激发光谱在250~380nm范围有宽的吸收带,其发射光谱中同时出现了Ce^3+的宽带发射和Tb^3+的f-f跃迁窄带发射,所合成最强绿光发射的荧光粉为GdBO3∶0.02Ce^3+,0.15Tb^3+.同时研究了Bi^3+的掺杂对GdBO3∶0.02Ce^3+,0.15Tb^3+荧光粉的晶体结构,颗粒形貌和发光性质的影响.结果表明,Bi^3+的掺杂能够有效的提高GdBO3∶0.02Ce^3+,0.15Tb^3+荧光粉的发光强度,以及Ce^3+-Tb^3+的能量传递效率.
A series of GdBO3 : Ce^3+,xTb^3+ phosphors were synthesized by solid state reaction. The crystal structure, luminescent properties and quantum efficiency of the synthesized phosphors were investigated. The GdBO3 : Ce^3+,xTb^3+ phosphor absorbs near UV light through 4f-5d transitions of Ce^3+,followed by broad emissions through 5d-4f transitions of Ce^3+ and sharp emissions through 4f-4f transitions of Tb^3+. The optimized green emitting phosphor is GdBO3 : 0. 02Ce^3+,0. 15Tb^3+ phosphor. The influence of Bi+ on the crystal structure, particle morphology and luminescent properties of GdBO3 : 0. 02Ce^3+, 0. 15Tb3 phosphor were studied. The introduction of Bi^3+ can efficiently improve the emission intensity and energy transfer efficiency from Ce^3+ to Tb^3+ in GdBO3 : 0. 02Ce^3+,0.15Tb^3+ phosphor.
作者
张秋红
倪海勇
丁建明
林利添
姜伟
ZHANG Qiuhong;NI Haiyong;DING Jianming;LIN Lilian;JIANG Wei(Guangdong Province Key Laboratory of Rare Earth Development and Application , Guangdong Research Institute of Rare Metals ,Guangzhou 510651,China)
出处
《材料研究与应用》
CAS
2019年第3期220-224,228,共6页
Materials Research and Application
基金
广州市科技计划项目(201707010212,201804010356)
广东省科技计划项目(2017A030310089,2017B090901070,2017A070701022,2017B090907026,2017B030314081,2018A050506061)
广东省科学院实施创新驱动发展能力建设专项资金项目(2017GDASCX-0110,2018GDASCX-0110,2018GDASC X-0940,2018GDASCX-0941)
作者简介
张秋红(1981-),女,河南漯河人,教授高工,博士,主要研究方向为稀土发光材料.
