دورية
Tailoring the Luminescent Properties of SrS:Ce3+by Sr-Deficiency and Na+Doping
| العنوان: | Tailoring the Luminescent Properties of SrS:Ce3+by Sr-Deficiency and Na+Doping |
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| المؤلفون: | Chang, Shuqin, Fu, Jipeng, Sun, Xuan, Bai, Guangcan, Liu, Guoquan, Wang, Kaina, Xu, Ligang, Wei, Qi, Meier, Thomas, Tang, Mingxue |
| المصدر: | Inorganic Chemistry; February 2022, Vol. 61 Issue: 8 p3746-3753, 8p |
| مستخلص: | Ce3+-doped SrS phosphors with a charge-compensating Na+addition were successfully synthesized via a solid-state reaction method, and the related X-ray diffraction patterns can be indexed to the rock-salt-like crystal structure of the Fm3̅mspace group. SrS:(Ce3+)x(0.005 ≤ x≤ 0.05) and SrS:(Ce3+)0.01,(Na+)y(0.005 ≤ y≤ 0.030) phosphors were excited by 430 nm UV-Vis light, targeted to the 5d1→ 4f1transition of Ce3+. The composition-optimized SrS:(Ce3+)0.01, (Na+)0.015phosphors showed an intense broad emission band at λ = 430–700 nm. The doping of Na+was probed by solid-state nuclear magnetic resonance. The 430 nm pumped white light-emitting diode structure fabricated with a combination of SrS:(Ce3+)0.01,(Na+)0.015and Sr2Si5N8:Eu2+phosphors shows a color-rendering index (Ra) of 89.7. The proposed strategy provides new avenues for the design and realization of novel high color quality solid-state LEDs. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 00201669 1520510X |
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| DOI: | 10.1021/acs.inorgchem.1c04016 |