三价铋离子掺杂发光材料研究进展

Recent Progress on Bi3+-doped Luminescent Material

三价铋离子(Bi^(3+))是一种优良的发光材料激活剂和敏化剂,近年来得到了广泛研究。Bi^(3+)离子发光易受晶体场强度的影响,在紫外和近紫外激发下可获得覆盖整个可见光区域的丰富发射颜色及近红外发光,因而受到广泛关注,同时相关发光材料在固态照明、显示、生物医学和光学传感方面显示出良好的应用前景。本综述总结了Bi^(3+)的发光特点,重点阐述了几类Bi^(3+)掺杂发光材料的研究进展,并详细介绍了其发光性质与晶体结构间的构‐效关系。针对Bi^(3+)掺杂发光材料的发光性能精准调控与优化的关键问题,本综述讨论了组分取代、能量传递、混合价态等设计策略诱导性能调控与优化的机理。最后,我们探讨了Bi^(3+)掺杂发光材料研究未来的一些挑战和机遇,以期指导pc‐LED应用中新型发光材料的开发。

Trivalent bismuth ions(Bi^(3+))are excellent activators and sensitizers of luminescent materials and have been extensively studied recently.Bi^(3+)ions have attracted much attention due to their susceptibility to crystal field strengths and their ability to obtain rich emission colors covering the entire visible region under UV and NUV excitation,as well as NIR luminescence.These phosphor materials show potential applications in solid-state lighting,display,biomedical and optical sensing.In this review,the luminescence characteristics of Bi^(3+)and the research progress of Bi^(3+)-doped phosphor materials were summarized,and the relationship between their photoluminescence properties and crystal structure was introduced in detail.In view of the key problems for precise regulation and optimization of luminescence properties of Bi^(3+)doped luminescent materials,the mechanism induced by design strategies such as component substitution,energy transfer and mixed valence state was discussed in this review.Finally,we discussed some future challenges and opportunities in Bi^(3+)-doped luminescent materials,with a view to guiding the discovery and development of new phosphor materials for pc-LED applications.