摘要
采用高温固相法制备LED用荧光粉Gd2(MoO4)3∶Eu3+、Dy3+,通过样品的X射线衍射图谱以及光致发光光谱的测试和表征,研究Gd2(MoO4)3∶Eu3+、Dy3+的晶体结构和发光性能.结果表明:样品属于正交晶系,常温下在389nm的近紫外光的激发下,样品发射出很强的白光,在Eu3+和Dy3+共同掺杂的体系中,可以观察到由于Dy3+向Eu3+的能量传递使Dy3+敏化Eu3+的发光现象.
Gd2 （MoO4）3 ∶ Eu3＋ 、Dy3＋ phosphors were prepared with high-temperature solid-state reaction.The microstructure and luminescent properties of the obtained Gd2 （MoO4）3 ∶ Eu3＋、Dy3＋ particles were characterized by X-ray diffraction （XRD） and photoluminescence （PL） spectra.The result showed that the samples belonged in orthorhombic system,and emitted an intensive white light under excitation at 389 nm at room temperature.In the Eu3＋ and Dy3＋ co-doped samples,the emission intensity of the Eu3＋ ions was strongly enhanced because of the energy transfer process from Dy3＋ to Eu3＋.
出处
《兰州理工大学学报》
CAS
北大核心
2013年第6期15-18,共4页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(51165021)
甘肃省自然科学基金(1014RJZA027)
