Judd-Ofelt analysis and visible luminescence of Sm3+: MCZBP glass for reddish-orange laser and multi-colour display applications

摘要: Abstract A new series of Sm3+ ions doped magnesium cadmium zinc borophosphate (Sm3+: MCZBP) glasses were prepared with melt quenching, and characterized X-ray diffraction, optical absorption spectra, excitation spectrum, emission fluorescence decay curves. The increase concentration increased the density (ρ), refractive index (n) decreased molar volume (Vm) glass. non-metallic nature was identified from metallization factor (M). spectra used to understand band gap (direct indirect). oscillator strength Judd-Ofelt (JO) intensity parameters determined further evaluate radiative properties glasses. luminescence showed four emissions transitions 4G5/2→6HJ (J = 5/2, 7/2, 9/2, 11/2), corresponding 562 nm (17793 cm−1), 597 nm (16750 cm−1), 644 nm (15527 cm−1) 704 nm (14204 cm−1) upon exciting 401 nm (24937 cm−1) wavelength, respectively. CIE chromaticity co-ordinates (x, y), colour purity (CP), correlated temperature (CCT) values calculated, showing that fell in reddish-orange region. experimental lifetime (τexp), quantum efficiency (η), stimulated cross-section ( σ P E ), gain bandwidth × Δ λ eff parameter τ exp ) articulated curves 4G5/2 excited state exhibited non-exponential profile for all present efficient energy transfer between two through cross-relaxation analysed Inokuti-Hirayama (IH) model (S = 6). All spectroscopic results revealed 1SmMCZBP glass had a strong at 4G5/2 → 6H7/2 transition, could be very promising material laser multi-colour display.