Gd3+/Ce3+对Tb3+掺杂氟氧化物玻璃发光敏化作用的影响
Effect of Gd3+/Ce3+ on Photosensitization of Tb3+Doped Fluorine Oxide Glass
刘瑞旺 1王宏杰 1符博 1贾亚男 1周建欣 1魏晋1
作者信息
- 1. 中国建筑材料科学研究总院有限公司石英与特种玻璃研究院,建筑材料行业石英玻璃重点实验室,北京 100024
- 折叠
摘要
本文采用高温熔融法制备了 Gd/Tb、Gd/Ce、Gd/Ce/Tb掺杂的SiO2-B2O3-BaF2组分氟氧化物玻璃,通过测试X射线衍射光谱确定了其物相,通过测试其不同波段激发下的荧光光谱研究了不同Gd2O3掺量下Tb3+的发光性能,并确定了 Gd2O3更精确的最佳掺量范围.此外,文中通过改变气氛制备了 Gd/Ce/Tb共掺杂氟氧化物玻璃,对比研究了 Gd3+和Ce3+对Tb3+的敏化作用.结果表明,本文所制备的氟氧化物玻璃都呈稳定的玻璃态;Gd3+和Ce3+对Tb3+的发光都具有敏化作用,且Gd2O3掺量为7％(摩尔分数,下同)时敏化效果相较于其他掺量最为显著,超出7％则造成猝灭;Ce2O3掺入玻璃后以Ce3+和Ce4+两种价态共存,在还原气氛下掺入相较于空气气氛下掺入更容易保持Ce3+状态,而且Ce3+对Tb3+的发光具有敏化作用,Ce4+会抑制Tb3+的发光.
Abstract
Gd/Tb、Gd/Ce、Gd/Ce/Tb doped SiO2-B2O3-BaF2 fluorine oxide glass was prepared by high temperature melting method.The phase of fluorine oxide glass was determined by X-ray diffraction spectrum.The luminescence properties of Tb3+doped with different Gd2O3 content were studied by the fluorescence spectra of Tb3+under different excitation bands,and the more accurate numerical range of optimal Gd2O3 content was determined.Gd/Ce/Tb co-doped fluorine oxide glass was prepared by changing the atmosphere.The sensitization of Gd3+and Ce3+to Tb3+was studied.The results show that the prepared fluorine oxide glass has a stable glassy state.Both Gd3+and Ce3+sensitize the luminescence of Tb3+,and the sensitization effect is most significant when Gd2O3 content is 7％(molar fration,the same below)compared with other content,and quenching occurs when Gd2O3 content exceeds 7％.Cerium can coexist in Ce3+and Ce4+valence states in Ce2O3 doped glass,and it is easier to maintain Ce3+state when doped in reducing atmosphere than in air atmosphere.Moreover,Ce3+sensitizes the luminescence of Tb3+,while Ce4+inhibites the luminescence of Tb3+.
关键词
Tb3+发光特性/Gd/Ce/Tb共掺/Ce3+/Ce4+价态/氟氧化物玻璃/能量传递Key words
luminescence property of Tb3+/Gd/Ce/Tb-doping/valence state of Ce3+/Ce4+/fluorine oxide glass/energy transfer引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据