Li Xiaodong, Song Yanjie, Yang Yanmin, Mi Chao, Liu Yanzhou, Yu Fang, Liu Linlin, Zhang Jiao, Li Zhiqiang
J Nanosci Nanotechnol. 2016 Apr;16(4):3542-6. doi: 10.1166/jnn.2016.11808.
Er3+/Yb3+ co-doped BaGd2CuO5 upconversion luminescent materials are obtained by solid phase method. Rietveld refinement on X-ray diffraction data indicates that Er3+/Yb3+ ions are inclined to occupy the Gd(1) site in the structure of BaGd2CuO5 (green phase). Two green emission peaks located at 523 nm and 547 nm have been produced by the excitation of 971 nm LD. The fluorescence intensity ratio (FIR) of the two green emission peaks have been investigated in the temperature range of 290 K-594 K. The maximum sensitivity derived from the FIR technique of the green upconversion emission is approximately 0.0038 K-1, and it has a high transmission power at low excitation density. This result implies that the Er3+/Yb3+ co-doped BaGd2CuO5 phosphors can play an important role in temperature measurements with a better sensitivity.
采用固相法制备了Er3+/Yb3+共掺杂的BaGd2CuO5上转换发光材料。对X射线衍射数据进行的Rietveld精修表明，Er3+/Yb3+离子倾向于占据BaGd2CuO5（绿相）结构中的Gd(1)位点。通过971 nm激光二极管激发产生了位于523 nm和547 nm处的两个绿色发射峰。研究了在290 K - 594 K温度范围内这两个绿色发射峰的荧光强度比（FIR）。绿色上转换发射的FIR技术获得的最大灵敏度约为0.0038 K-1，并且在低激发密度下具有高发射功率。该结果表明，Er3+/Yb3+共掺杂的BaGd2CuO5荧光粉在具有更好灵敏度的温度测量中可发挥重要作用。
