White light upconversion emissions in Er3+/Tm3+/Yb3+ tridoped oxyfluoride glass

被引:1
|
作者
Guan, Xiaoping [1 ]
Xu, Wei [2 ]
Zhu, Shuang [3 ]
Song, Qiutong [2 ]
Wu, Xijun [2 ]
Liu, Hailong [2 ]
机构
[1] Yanshan Univ, Coll Sci, Qinhuangdao 066004, Peoples R China
[2] Yanshan Univ, Sch Elect Engn, Qinhuangdao 066004, Peoples R China
[3] Yanshan Univ, Liren Coll, Qinhuangdao 066004, Peoples R China
来源
AOPC 2015: OPTICAL AND OPTOELECTRONIC SENSING AND IMAGING TECHNOLOGY | 2015年 / 9674卷
关键词
Upconversion; Oxyfluoride glass; White light; Thermal effect; LUMINESCENCE;
D O I
10.1117/12.2196636
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Rare earth ions doped glasses producing visible upconversion emissions are of great interest due to their potential applications in the photonics filed. In fact, practical application of upconversion emissions has been used to obtain color image displays and white light sources. However, there are few reports on the thermal effect on tuning the emission color of the RE doped materials. In this work, the Er3+/Tm3+/Yb3+ tridoped oxyfluoride glasses were prepared through high temperature solid-state method. Under a 980 nm diode laser excitation, the upconversion emissions from the samples were studied. At room-temperature, bright white luminescence, whose CIE chromaticity coordinate was about (0.28, 0.31), can be obtained when the excitation power was 120 mW. The emission color was changed by varying the intensity ratios between RGB bands, which are strongly dependent on the rare earth ions concentration. The temperature dependent color emissions were also investigated. As temperature increased, the intensities for the emission bands presented different decay rates, finally resulting in the changing of the CIE coordinate. When the temperature was 573 K, white light with color coordinate of (0.31, 0.33) was achieved, which matches well with the white reference (0.33, 0.33). The color tunability, high quality of white light and intense emission intensity make the transparent oxyfluoride glasses excellent candidates for applications in solid-state lighting.
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页数:7
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