| Pb~(2+)掺杂导致的CaF_2中Yb~(3+)离子三聚体合作发光猝灭 |
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| 引用本文： | 吐尔逊&#;艾迪力比克,杨育,赵丹,秦伟平.Pb~(2+)掺杂导致的CaF_2中Yb~(3+)离子三聚体合作发光猝灭[J].发光学报,2017,38(10):1280-1286. |
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| 作者姓名： | 吐尔逊&#;艾迪力比克 杨育 赵丹 秦伟平 |
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| 作者单位： | 1. 吉林大学 电子科学与工程学院, 吉林 长春 130012;
2. 伊犁师范学院 电子与信息工程学院, 新疆 伊宁 835000 |
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| 基金项目： | 国家自然科学基金，新疆科技厅自然科学基金，伊犁师范学院微纳电传感技术与仿生器械实验室开放项目(2016wnzd004)资助Supported by National Natural Science Foundation of China，Natural Science Foundation of Xinjiang Sci-ence and Technology Department，Micro Nano Electrical Sensing Technology and Bionic Instruments Laboratory Opening Project of Yili Normal University |
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| 摘 要： | 利用978 nm近红外光激发样品Ca F2∶Pb2+,Yb3+,在室温下观察到二价Pb2+离子在383 nm附近的紫外上转换发光。该发射峰对应于Pb2+离子的3P0"1A1g(1S0)跃迁。瞬态光谱测量结果表明:在这个材料体系中,Pb2+离子的激发来自于Yb3+离子三聚体的合作敏化。但是随着Pb2+离子掺杂浓度的提高,Yb3+离子三聚体遭到结构性破坏,导致其合作发光减弱。本文首次利用Pb2+离子掺杂造成Yb3+离子三聚体的结构性破坏,从而引起合作荧光猝灭,并对在Ca F2基质中因其他二价离子的掺入而造成的Yb3+三聚体合作发光猝灭给予了合理的解释。
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| 关 键 词： | Yb3+离子三聚体 合作敏化 Pb2+离子 紫外上转换发光 |
| 收稿时间： | 2017-04-06 |
Pb2+ Ions Doping Induced Cooperative Luminescence Quenching of Yb3+-trimers in CaF2 |
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| TUERXUN Aidilibike,YANG Yu,ZHAO Dan,QIN Wei-ping.Pb2+ Ions Doping Induced Cooperative Luminescence Quenching of Yb3+-trimers in CaF2[J].Chinese Journal of Luminescence,2017,38(10):1280-1286. |
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| Authors: | TUERXUN Aidilibike YANG Yu ZHAO Dan QIN Wei-ping |
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| Institution: | 1. College of Electronic Science & Engineering, Jilin University, Changchun 130012, China;
2. Electronic and Information Engineering, Yili Normal University, Yining 835000, China |
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| Abstract: | At room temperature, the ultraviolet ( UV ) upconversion emissions from CaF2: Pb2+, Yb3+ were observed under the excitation of 978 nm near infrared ( NIR) laser. The upconversion emission peak is centered at 383 nm, which is ascribed to the 3 P0→1 A1g ( 1 S0 ) transition of Pb2+ions. Through the results of transient measurements, the upconversion process of Pb2+ ions is con-firmed. The energy transfer process is that three excited Yb3+ ions simultaneously transfer their ener-gy to one Pb2+ ion. With the increasing of Pb2+ concentration, the cooperative luminescence from Yb3+ clusters decreases gradually. In order to explain this phenomenon, we propose a new coopera-tive luminescence quenching mechanism in this paper, which is originated from Pb2+ induced struc-ture destruction of Yb3+-trimers. The fluorescence quenching in Pb2+ and Yb3+ codoped CaF2 is given a reasonable explanation. |
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| Keywords: | Yb3+-trimers cooperative sensitization Pb2+ions UV upconversion luminescence |
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