|
Novel non-rare-earth phosphors of Mn 4+ -activated CaSrInTaO 6 double-perovskite matrix for luminescence lifetime thermometry
|
|
|
| 【文章作者】Hua, Yongbin;Yang, Wen-Xing |
| 【文章摘要】 It is the first time to design novel CaSrInTaO6:Mn4+ double-perovskite phosphors by using a high-temperature solid-state reaction. The obtained sample was determined to have a monoclinic crystal structure with the P 21/n (14) space group, and the cell parameters of the optimal sample were provided with the aid of XRD refinement. The obtained sample emitted a deep red emission under the 373 nm excitation. The electric dipole-dipole interaction was suggested to control the concentration quenching while the critical doping concentration was 0.1 mol%. Moreover, the crystal field strength (D-q) was estimated to be about 1795.3 cm(-1) with a nephelauxetic ratio (beta(1)) of 1.02. Furthermore, the chromaticity coordinates and color purity were (0.722, 0.278) and 96.4 %. Eventually, the obtained sample was sensitive to the temperature because of having strong thermal quenching. So, the luminescence sensitivity behaviors (e.g., absolute sensitivity (S-A), relative sensitivity (S-R), and temperature uncertainty (delta T)) were investigated. Particularly, the maximum S-R value was calculated to be 1.18 % K-1@256 K with a low-temperature uncertainty of 0.32 K. Briefly, novel non-rare-earth CaSrInTaO6:Mn4+ double-perovskite phosphors were investigated and potentially attempted for luminescence lifetime thermometry. |
| 【关 键 字】 |
|
【卷】【ISSUE】【ISSUEID】
【文章期份】2024
【发布日期】2025/5/13 10:04:17
点击率：0
打印
关闭
|
|