Photoluminescence characteristics of novel Sm3+ ions-doped La1.4Al22.6O36 phosphor for n-UV w-LED

The combustion procedure was used to synthesize La1.4Al22.6O36:Sm3+ phosphors. The X-ray diffraction (XRD) patterns and morphological and photoluminescence properties were investigated. The XRD patterns consisted of a hexagonal crystal structure. At 405 nm, the maximum excitation intensity was obtained. Following 405 nm excitation, three different emission peaks at 573, 604, and 651 nm were seen. Concentration quenching occurred at 1.5 mol% Sm3+ ions. The Commission Internationale de l'eclairage coordinates for the La1.4Al22.6O36 phosphor with Sm3+ doping were 604 nm (x = 0.644, y = 0.355) falling in the red region. The findings implied that the prepared phosphor may be used to develop w-light-emitting diodes.

Automated summary

The La1.4Al22.6O36:Sm3+ phosphors were synthesized using the combustion procedure. The XRD patterns revealed a hexagonal crystal structure. The maximum excitation intensity was obtained at 405 nm. Three different emission peaks at 573, 604, and 651 nm were observed under 405 nm excitation. Concentration quenching occurred at 1.5 mol% Sm3+ ions. The La1.4Al22.6O36 phosphor with Sm3+ doping exhibited a red emission at 604 nm (x = 0.644, y = 0.355) in the CIE coordinates. These findings suggest that the prepared phosphor could be used for developing w-light-emitting diodes.