Synthesis and Photoluminescence characterization of Sr3La(AlO)(3)(BO3)(4):Eu3+, Sm3+ Phosphor for n-UV w-LED

A red emitting Eu3+ doped Sr3La(AlO)(3)(BO3)(4) and Sm3+ doped Sr3La(AlO)(3)(BO3)(4) phosphors with high efficiency have been synthesized by combustion method and the photoluminescence properties of samples are investigated in detail. Morphology by scanning electron microscopy and chromaticity by CIE were studied. The results demonstrate the excitation ranges from 340 nm to 420 nm, especially, the strongest excitation (394 nm and 406 nm) locates in the UV region for Eu3+ and Sm3+ doping, suggesting that the phosphor can match well with LED chips. Under n-UV light excitation of 394 nm the Eu3+ doped Sr3La(AlO)(3)(BO3)(4) and 406 nm Sm3+ doped Sr3La(AlO)(3)(BO3)(4) phosphor can emit bright red light with main emission peaks located at 617 nm and 602 nm are observed, The PL properties indicate that the phosphor has excellent stability. These results imply the importance of Sr3La(AlO)(3)(BO3)(4):Eu3+ and Sr3La(AlO)(3)(BO3)(4):Sm3+ red phosphors in white LEDs under n-UV excitation.

Automated summary

A red emitting Eu3+ doped Sr3La(AlO)(3)(BO3)(4) and Sm3+ doped Sr3La(AlO)(3)(BO3)(4) phosphors with high efficiency were synthesized and their photoluminescence properties were investigated. The morphology and chromaticity were studied using scanning electron microscopy and CIE analysis. The results showed that the phosphor had excitation ranges from 340 nm to 420 nm, with the strongest excitation located in the UV region for Eu3+ and Sm3+ doping, making it suitable for LED chips. Under n-UV light excitation, the phosphor emitted bright red light with main emission peaks at 617 nm and 602 nm, indicating excellent stability. These results highlight the importance of Sr3La(AlO)(3)(BO3)(4):Eu3+ and Sr3La(AlO)(3)(BO3)(4):Sm3+ red phosphors in white LEDs under n-UV excitation.