Screen printing of upconversion NaYF4:Yb3+/Eu3+ with Li+ doped for anti-counterfeiting application | |
Li, Dongdong2; Mo, Jianye2; Wang, Chong2; Liu, Wei2; Ge, Haibo2; Han, Dongdong2; Hao, Aihua2; Chai, Baoyu2; She, Jiangbo1 | |
刊名 | CHINESE OPTICS LETTERS |
2020-11-10 | |
卷号 | 18期号:11 |
关键词 | upconversion micro-particles hydrothermal synthesis anti-counterfeiting identification screen printing |
ISSN号 | 1671-7694 |
DOI | 10.3788/COL202018.110501 |
产权排序 | 2 |
英文摘要 | Li ions affect the upconversion efficiency by changing the local crystal field of the luminescent center. Herein, in order to improve the upconversion efficiency of NaYF4:Yb3+/Eu3+, a series of NaYF4:Yb3+/Eu3+ micro-particles with different Li+ doping concentrations were synthesized by the hydrothermal synthesis method, respectively. Firstly, the structure and morphology of NaYF4:Yb3+/Eu3+ upconversion micro-particles (UCMPs) with differ-ent doping concentrations were analyzed by X-ray diffraction and a scanning electron microscope (SEM). SEM results show that the UCMPs are not only highly crystallized, but also have hexagons with different Li+ concentrations of NaYF4:Yb3+/Eu3+. X-ray diffraction shows that the crystal field around Eu3+ changes with the increase of Li+ concentration. Then, the fluorescence spectrum of NaYF4:Yb3+/Eu3+ was studied under the irradiation of a 980 nm laser. The results show that the fluorescence intensity of NaYF4:Yb3+/Eu3+ with 2% Li+ is the strongest, which is twice the intensity of NaYF4:Yb3+/Eu3+ without Li+. Finally, the fluorescence imaging analysis of NaYF4:Yb3+/Eu3+ with 2% Li+ concentration was carried out. The UCMPs are used to screen printing to evaluate the imaging effect on different sample surfaces. The results show NaYF4:Yb3+/Eu3+ (with 2% Li+) has great application prospects in anti-counterfeiting recognition. |
语种 | 英语 |
出版者 | OSA-OPTICAL SOC |
WOS记录号 | WOS:000591933400006 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/94202] |
专题 | 西安光学精密机械研究所_网络信息中心 |
通讯作者 | She, Jiangbo |
作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China 2.Xian Univ Post & Telecommun, Sch Elect Engn, Xian 710121, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Dongdong,Mo, Jianye,Wang, Chong,et al. Screen printing of upconversion NaYF4:Yb3+/Eu3+ with Li+ doped for anti-counterfeiting application[J]. CHINESE OPTICS LETTERS,2020,18(11). |
APA | Li, Dongdong.,Mo, Jianye.,Wang, Chong.,Liu, Wei.,Ge, Haibo.,...&She, Jiangbo.(2020).Screen printing of upconversion NaYF4:Yb3+/Eu3+ with Li+ doped for anti-counterfeiting application.CHINESE OPTICS LETTERS,18(11). |
MLA | Li, Dongdong,et al."Screen printing of upconversion NaYF4:Yb3+/Eu3+ with Li+ doped for anti-counterfeiting application".CHINESE OPTICS LETTERS 18.11(2020). |
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