Bibliographic Details
| Title: |
Enhanced Luminescence and Thermal Stability in High Gd 3+ /Eu 3+ Co-Doped Ba 3 Y 4 O 9 Phosphors via Co-Precipitation Method. |
| Authors: |
Zhu, Dong1,2 (AUTHOR), Wang, Chunfeng1,2 (AUTHOR), Wang, Xiaohuai3 (AUTHOR), Han, Shun1 (AUTHOR), Zeng, Yuxiang1 (AUTHOR), Fang, Ming1 (AUTHOR), Liu, Wenjun1 (AUTHOR), Zhu, Deliang1 (AUTHOR), Cao, Peijiang1 (AUTHOR), Lu, Youming1,2,3 (AUTHOR) |
| Source: |
Molecules. Mar2025, Vol. 30 Issue 5, p1085-1. 14p. |
| Subject Terms: |
*THERMAL stability, *ENERGY transfer, *COLOR temperature, *HIGH temperatures, *THERMAL resistance |
| Abstract: |
The co-precipitation method was successfully used to synthesize Ba3(Y0.6−xGd0.4Eux)4O9 (0.01 ≤ x ≤ 0.09) phosphors with heavy Gd3+ doping, resulting in significantly enhanced thermal stability and luminescence performance. Structural analyses confirm that Gd3+ and Eu3+ ions substitute Y3+ in the lattice, causing lattice expansion and improving crystal asymmetry, which enhances Eu3+ emission. The incorporation of Gd3+ creates efficient energy transfer pathways to Eu3+ while suppressing non-radiative relaxation, leading to stable fluorescence lifetimes even at elevated temperatures. With a thermal activation energy of ~0.3051 eV, the Ba3(Y0.55Gd0.4Eu0.05)4O9 phosphor exhibits superior resistance to thermal quenching compared to Ba3(Y0.95Eu0.05)4O9 and many conventional red phosphors. Furthermore, the reduced color temperature and stable emission spectra across a wide temperature range highlight its potential for advanced lighting and display technologies in high-temperature environments. [ABSTRACT FROM AUTHOR] |
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