Structure–luminescence correlations in Eu 3+ -activated Ba 2 LaVO 6 and Ba 2 GdVO 6 double-perovskite phosphors

Key Points

• To investigate how the structure of Ba2LaVO6 and Ba2GdVO6 affects their luminescent properties when doped with Eu3+.
• Synthesis of Eu3+-doped Ba2LaVO6 and Ba2GdVO6 phosphors.
• Characterization of luminescent properties through emission spectroscopy.
• Comparison of structural features and emission outcomes between the two phosphors.
• The La-based phosphor exhibits unique 5D0 → 7F4 red emission due to a flexible lattice.
• The Gd-based phosphor shows dominant 5D0 → 7F2 emission with higher thermal stability.