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Article Abstract
The co-precipitation method was successfully used to synthesize Ba(YGdEu)O (0.01 ≤ x ≤ 0.09) phosphors with heavy Gd doping, resulting in significantly enhanced thermal stability and luminescence performance. Structural analyses confirm that Gd and Eu ions substitute Y in the lattice, causing lattice expansion and improving crystal asymmetry, which enhances Eu emission. The incorporation of Gd creates efficient energy transfer pathways to Eu while suppressing non-radiative relaxation, leading to stable fluorescence lifetimes even at elevated temperatures. With a thermal activation energy of ~0.3051 eV, the Ba(YGdEu)O phosphor exhibits superior resistance to thermal quenching compared to Ba(YEu)O 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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11901592 | PMC |
| http://dx.doi.org/10.3390/molecules30051085 | DOI Listing |
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