摘要
【目的】研究Eu掺杂天然钾长石荧光粉的发光性质,为开发基于天然钾长石与Eu^(3+)离子的光致发光材料提供依据。【方法】通过高温固相法制备了系列KAl Si3O8:x%Eu^(3+)荧光材料,采用XRD技术对其物相结构进行分析。【结果】该材料在空气下制备时,Eu^(3+)部分还原为Eu^(2+),两者共存且稳定。Eu^(2+)在397 nm处呈现蓝色宽带发射,而Eu^(3+)则在618 nm、655 nm及704 nm展现红色窄带发射,尤以320 nm和394 nm激发下最为明亮。Eu^(3+)浓度增加导致618 nm处发光先升后降,呈现浓度依赖效应,最佳Eu^(2+)/Eu^(3+)掺杂比分别为2 wt%/0.7 wt%。【结论】天然矿物基质与稀土离子结合在光致发光材料领域具有创新价值。
[Purposes]The luminescence properties of Eu-doped natural K-feldspar phosphors were studied to provide a basis for the development of photoluminescent materials based on natural K-feldspar and Eu^(3+)ions.[Methods]A series of KAlSi3O8:x%Eu^(3+)fluorescent materials were prepared by high-temperature solid-phase method,and their phase structures were analyzed by XRD technology.[Findings]When a material is prepared under air,Eu^(3+)is partially reduced to Eu^(2+),and both coexist and are stable.Eu^(2+)shows blue wide-band emission at 397 nm,while Eu^(3+)shows red narrowband emission at 618 nm,655 nm and 704 nm,brightest especially at 320 nm and 394 nm excitation.An increase in Eu^(3+)concentration leads to an increase and then a decrease in luminescence at 618 nm,showing a concentration-dependent effect,with an optimal Eu^(2+)/Eu^(3+)doping ratio of 2 wt%/0.7 wt%,respectively.[Conclusions]This paper shows the innovative value of natural mineral matrix combined with rare earth ions in the field of photoluminescent materials.
作者
朱慧敏
纳治国
巴合提古丽·阿斯里别克
吐尔逊·艾迪力比克
ZHU Huimin;NA Zhiguo;BAHETIGULI Asilibike;TUERXUN Aidilibike(Yili Normal University,Yining 835000,China)
出处
《河南科技》
2024年第21期79-82,共4页
Henan Science and Technology
基金
伊犁师范大学微纳电传感技术与仿生器械实验室开放项目(2016WNZD004)。
关键词
高温固相法
天然钾长石
防伪
发光性质
high-temperature solid-state method
natural k-feldspar
anti-counterfeiting
luminescent properties
