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用高温固相法制备了不同浓度的Tm3+和Yb3+共掺杂Bi2WO6上转换发光材料. 对合成粉末的微结构、上转换发射光谱, 以及材料的光学温度传感性质进行了表征和分析. X射线衍射谱结果显示, Tm3+和Yb3+离子的掺杂基本不影响Bi2WO6基质材料的正交晶系结构. 在980 nm激发下, Tm3+和Yb3+掺杂摩尔分数分别是1%和6%时获得样品中Tm3+发射强度最大. 随激发泵浦功率从199 mW增加到400 mW, 1%Tm3+, 6%Yb3+:Bi2WO6样品中Tm3+的4个发射峰强度均增强. 199—400 mW激发功率下, 样品光强I和激发功率Pn呈现线性关系. 计算该范围激发泵浦功率和Tm3+发射强度的关系, 得到Tm3+的4个发射峰478, 650, 685和705 nm分别对应n值为1.01, 1.34, 1.77和1.75, 这表明以上发射峰均源于双光子吸收. 980 nm激发(功率379 mW)下, 当温度从298 K升高到573 K时, 1%Tm3+, 6%Yb3+:Bi2WO6样品中Tm3+的热耦合能级对(3F3, 3F2)产生705 nm和685 nm处发射强度分别增加了28.4倍和31.6倍. 拟合样品中Tm3+的热耦合能级对(3F3, 3F2)的荧光强度比与温度的关系, 计算得到在298 K时, 样品最大绝对测温灵敏度为0.00254 K–1, 最大相对测温灵敏度为0.00144 K–1. 同样条件下, 拟合非热耦合能级对(3F3, 1G4)产生的705 nm和650 nm荧光强度比与温度关系, 计算得到在573 K时, 最大绝对测温灵敏度为0.167 K–1. 298 K时最大相对测温灵敏度为0.0378 K–1, 比热耦合能级(3F3, 3F2)表征温度的相对最大测温灵敏度Sr提高了26倍.Tm3+ and Yb3+, with different concentrations, co-doped Bi2WO6 up-conversion luminescence materials are prepared by high temperature solid state method. The microstructure, upconversion emission spectra, and optical temperature sensing properties of the synthesized powders are characterized and analyzed. The X-ray diffraction results show that the doping of Tm3+ and Yb3+ ions has little effect on the orthorhombic structure of Bi2WO6 matrix material. Under the 980 nm excitation, the maximum emission intensity of Tm3+ ions is obtained when the doping concentration of Tm3+ and Yb3+ are 1% and 6%, respectively. The intensities of four emission peaks of Tm3+ in 1%Tm3+, 6%Yb3+:Bi2WO6 sample increase with the excitation pump power increasing from 199 to 400 mW. With the excitation power of 199–400 mW, the sample light intensity I and the excitation power Pn show a linear relationship. The relationship between the excitation pump power and the emission intensity of Tm3+ in this range is investigated. The four emission peaks of Tm3+ at 478, 650, 685 and 705 nm correspond to the n values of 1.01, 1.34, 1.77 and 1.75, respectively, indicating that the above emission peaks are derived from two-photon absorption. Under 980 nm excitation (power 379 mW), when the temperature increases from 298 to 573 K, the thermal coupling energy levels of Tm3+ in 1%Tm3+, 6%Yb3+:Bi2WO6 samples produce 705 and 685 nm emission whose intensities are increased by 28.4 times and 31.6 times, respectively. The relationship between the fluorescence intensity ratio of the thermal coupling energy levels (3F3, 3F2) of Tm3+ in the sample and the temperature is fitted. The maximum absolute temperature sensitivity of the sample is 0.00254 K–1 at 298 K, and the maximum relative temperature sensitivity is 0.00144 K–1. Under the same conditions, the relationship between the fluorescence intensity ratio of 705 and 650 nm produced by the non-thermal coupling energy level pair (3F3, 1G4) and the temperature is fitted, and the maximum absolute temperature sensitivity is calculated to be 0.167 K–1 at 573 K. The maximum relative temperature sensitivity is 0.0378 K–1 at 298 K, which is 26 times higher than the relative maximum temperature sensitivity Sr of the thermal coupling level (3F3, 3F2).
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Keywords:
- upconversion luminescence /
- thermally coupled energy level /
- non-thermally coupled energy level /
- temperature measurement sensitivity
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[3] 谢宇 2016 硕士学位论文 (沈阳: 辽宁大学)
Xie Y 2016 M. S. Thesis (Shenyang: Liaoning University) (in Chinese)
[4] 吴中立, 吴红梅, 唐立丹, 李煜, 郭宇, 姚震 2017 光子学报 46 0916003Google Scholar
Wu Z L, Wu H M, Tang L D, Li Y, Guo Y, Yao Z 2017 Acta Photonica Sin. 46 0916003Google Scholar
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[10] 蒙铭周, 张瑞, 法信蒙, 杨江华, 欧俊 2021 发光学报 42 1763Google Scholar
Meng M Z, Zhang R, Fa X M, Yang J H, Ou J 2021 Chin. J. Lumin. 42 1763Google Scholar
[11] 郑龙江, 李雅新, 刘海龙, 徐伟, 张志国 2013 物理学报 62 240701Google Scholar
Zheng L J, Li Y X, Liu H L, Xu W, Zhang Z G 2013 Acta Phys. Sin. 62 240701Google Scholar
[12] Wu Z L, Zhang Y P, Bao D M, Li H Q, Hou X Q, Wang J L 2022 J. Lumin. 245 118766Google Scholar
[13] Lü H C, Du P, Li W P, Luo L H 2022 ACS Sustainable Chem. Eng. 10 2450Google Scholar
[14] Gao Z L, Wang J R, Yu D C, Pun E Y B, Lin H 2022 Adv. Mater. Interfaces 9 2101869Google Scholar
[15] 张志宏, 周慧丽, 吴锋, 张雁, 叶林华 2021 发光学报 42 1872Google Scholar
Zhang Z H, Zhou H L, Wu F, Zhang Y, Ye L H 2021 Chin. J. Lumin. 42 1872Google Scholar
[16] Wang T W, Zhao S L, Lei R S, Huang L H, Xu S Q 2022 J. Non-Cryst. Solids 579 121379Google Scholar
[17] Tong X, Zhou X, Tang X Z, Min Y G, Li X L, Wang W G, Qian Y N 2022 CrystEngComm 24 1407Google Scholar
[18] Wang X F, Liu Q, Bu Y Y, Liu C S, Liu T, Yan X H 2015 RSC Adv. 5 86219Google Scholar
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表 1 800 ℃下煅烧3 h合成不同浓度Tm3+, Yb3+共掺Bi2WO6材料
Table 1. Synthesis of Tm3+, Yb3+ co-doped Bi2WO6 materials with different doping concentration at the sintering temperature and time of 800 ℃ and 3 h.
Sample No. Mole fraction
of Tm3+/%Mole fraction
of Yb3+/%Mole fraction
of Bi2WO6/%1 0.5 6 93.5 2 1 6 93 3 1.5 6 92.5 4 2 6 92 5 1 4 95 6 1 8 91 7 1 10 89 表 2 不同基质材料中Tm3+温度传感性能
Table 2. Temperature sensing performance of Tm3+ in various host materials.
Host material Energy level Temperature range/K Relative temperature
measurement
sensitivity/K–1Ref. SiO2@Tm3+:NaYbF4 3F2, 3, 3H4→3H6 100—700 Max = 0.00054@298 K [18] Tm3+, Yb3+:LuYO3 3F2, 3F3→3H6 223—723 Max = 0.00461@516.3 K [15] Tm3+, Yb3+:LiNbO3 1G4→3F4, 3H4→3H6 80—260 Max = 0.0125@80 K [19] Tm3+, Yb3+:Bi3.84W0.16O6.24 3H4(1), 3H4(2)→3H6 323—573 Max = 0.00068@323 K [20] Li+, Tm3+, Yb3+:Bi3.84W0.16O6.24 3H4(1), 3H4(2)→3H6 323—573 Max = 0.00103@323 K Mg2+, Tm3+, Yb3+:Bi3.84W0.16O6.24 3H4(1), 3H4(2)→3H6 323—573 Max = 0.00070@323 K Tm3+, Yb3+:Bi2WO6 3F2, 3→3H6 298—573 Max = 0.00144@298 K This work 3F2, 3→3H6 313 0.0013 K–1 3F2, 3→3H6 323 0.0012 K–1 3F3→3H6 , 1G4→3F4 298—573 Max = 0.0378@298 K 3F3→3H6 , G4→3F4 313 0.0343 K–1 3F3→3H6, 1G4→3F4 323 0.0322 K–1 -
[1] Ruiz D, Rosal B, Acebrón M, et al. 2017 Adv. Funct. Mater. 27 1604629Google Scholar
[2] 周慧丽, 吴锋, 张志宏, 张雁, 叶林华 2022 发光学报 43 192Google Scholar
Zhou H L, Wu F, Zhang Z H, Zhang Y, Ye L H 2022 Chin. J. Lumin. 43 192Google Scholar
[3] 谢宇 2016 硕士学位论文 (沈阳: 辽宁大学)
Xie Y 2016 M. S. Thesis (Shenyang: Liaoning University) (in Chinese)
[4] 吴中立, 吴红梅, 唐立丹, 李煜, 郭宇, 姚震 2017 光子学报 46 0916003Google Scholar
Wu Z L, Wu H M, Tang L D, Li Y, Guo Y, Yao Z 2017 Acta Photonica Sin. 46 0916003Google Scholar
[5] Xing J H, Shang F, Chen G H 2021 J. Non-Cryst. Solids 569 120989Google Scholar
[6] Saidi K, Dammak M, Soler-Carracedo K, Martín I 2022 Dalton Trans. 51 5108Google Scholar
[7] Meng M Z, Zhang R, Fa X M, et al. 2022 CrystEngComm 24 1752Google Scholar
[8] Zhuang Y F, Wang D W, Yang Z P 2022 Opt. Mater. 126 112167Google Scholar
[9] Zheng T, Runowski M, Stopikowska N, Skwierczyńska M, Lis S, Du P, Luo L H 2021 J. Alloys Compd. 890 161830Google Scholar
[10] 蒙铭周, 张瑞, 法信蒙, 杨江华, 欧俊 2021 发光学报 42 1763Google Scholar
Meng M Z, Zhang R, Fa X M, Yang J H, Ou J 2021 Chin. J. Lumin. 42 1763Google Scholar
[11] 郑龙江, 李雅新, 刘海龙, 徐伟, 张志国 2013 物理学报 62 240701Google Scholar
Zheng L J, Li Y X, Liu H L, Xu W, Zhang Z G 2013 Acta Phys. Sin. 62 240701Google Scholar
[12] Wu Z L, Zhang Y P, Bao D M, Li H Q, Hou X Q, Wang J L 2022 J. Lumin. 245 118766Google Scholar
[13] Lü H C, Du P, Li W P, Luo L H 2022 ACS Sustainable Chem. Eng. 10 2450Google Scholar
[14] Gao Z L, Wang J R, Yu D C, Pun E Y B, Lin H 2022 Adv. Mater. Interfaces 9 2101869Google Scholar
[15] 张志宏, 周慧丽, 吴锋, 张雁, 叶林华 2021 发光学报 42 1872Google Scholar
Zhang Z H, Zhou H L, Wu F, Zhang Y, Ye L H 2021 Chin. J. Lumin. 42 1872Google Scholar
[16] Wang T W, Zhao S L, Lei R S, Huang L H, Xu S Q 2022 J. Non-Cryst. Solids 579 121379Google Scholar
[17] Tong X, Zhou X, Tang X Z, Min Y G, Li X L, Wang W G, Qian Y N 2022 CrystEngComm 24 1407Google Scholar
[18] Wang X F, Liu Q, Bu Y Y, Liu C S, Liu T, Yan X H 2015 RSC Adv. 5 86219Google Scholar
[19] Liu Z H, Long S W, Zhu Y Z, Wang W J, Wang B 2020 J. Alloys Compd. 867 158986Google Scholar
[20] Sun Z, Liu G F, Fu Z L, et al. 2018 Dyes Pigm. 151 287Google Scholar
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