摘要
用高温固相法在900℃,保温6h的条件下制备了YVO4单相粉末样品。在紫外光254nm激发下,YVO4:Eu3+的激发光谱由VO43-的吸收带和Eu3+的电荷迁移带组成。发射光谱为Eu3+的5D0→7FJ(J=1,2,4)跃迁。在Eu3+含量一定的情况下掺杂Bi3+和Sc3+,随着Bi3+浓度的增加,激发光谱宽化,但发射强度变弱;Sc3+浓度的增加则使YVO4:Eu3+的发射强度先增加后降低。在147nm激发下,(Y,Bi,Sc)VO4:Eu3+的发射光谱相对于YVO4:Eu3+有降低趋势。
（Y, Bi,Sc）VO4：Eu^3＋ was synthesized by solid state reaction at 900℃. for 6 h, and their luminescence properties were investigated under UV and VUV excitation. Under 254 nm excitation, the excitated band of YVO4：Eu^3＋ was composed of absorption of VO43and transition of Eu3＋, strong pure red emission due to ^5D0→^7F2 transition of Eu^3＋ was observed. The excitated band was broadened after doping Bi^3＋, but the relative intensity was decreased. After doping Sc^3＋, emission intensity was first increased, and then increased. Under147 nm excitation, （Y, Bi,Sc）VO4：Eu^3＋ emission spectra was consistent with that of 254 nm UV excitation, but the emission intensity was decreased.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第3期386-389,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50272026)
国家高技术研究发展计划("863"计划)(2003AA324020)资助项目
甘肃省自然基金(ZS031-A25-033-C)
