Novel yellow–orange-emitting Ba3Lu4O9: Sm3+ phosphors with good thermal stability and high color purity for solid state lighting


A series of novel Sm3+ activated yellow–orange-emitting phosphors have been synthesized successfully by the conventional solid-state method. Their phase composition and luminescence properties have been investigated and discussed systematically. Upon excitation at 410 nm, all the studied phosphors showed intense narrow emissions with a prominent peak centered at around 610 nm, corresponding to 4G5/26H7/2 transition. The critical concentration of Sm3+ ions was determined to be 0.02, and the concentration quenching mechanism was verified as dipole–dipole interaction. The investigation of thermal stability revealed that the photoluminescence intensity of Ba3Lu3.92O9:0.08Sm3+ at 425 K remained around 81.4% of that at 298 K. Besides, when excited at 410 nm, the studied phosphor exhibited high color purity of 99.5% with the CIE chromaticity coordinates of (0.5974, 0.4010) and a low Correlation Color Temperature of 2217 K. Consequently, it could be expected that the as-synthesized Ba3Lu4O9:Sm3+ phosphors would be a promising candidate of yellow–orange component for warm white or amber LEDs.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

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This work was supported by the National Natural Science Foundation of China (Grant No. 51772278 and No. 51802004), Shenyang Science and Technology Plan Project (Grant No. 20-202-1-12) and the Doctoral Scientific Research Foundation of Liaoning Province (Grant No. 2020-BS-263).


This work was supported by the National Natural Science Foundation of China (Grant No. 51772278 and No. 51802004), Shenyang Science and Technology Plan Project (Grant No. 20–202-1–12) and the Doctoral Scientific Research Foundation of Liaoning Province (Grant No. 2020-BS-263).

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ZW— Literature research, Formal analysis, Investigation, Writing—original draft, Data curation. XL—Resources, Funding acquisition. GM—Methodology, Conceptualization. JC—Methodology, Proofread. YL—Calculation, Software.

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Correspondence to Ziyao Wang or Xuezhu Luan.

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Wang, Z., Luan, X., Ma, G. et al. Novel yellow–orange-emitting Ba3Lu4O9: Sm3+ phosphors with good thermal stability and high color purity for solid state lighting. J Mater Sci: Mater Electron (2021).

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