Investigation on structural and luminescence features of Dy3+ ions doped alkaline-earth boro tellurite glasses for optoelectronic devices

摘要: Abstract A Series of Alkaline-Earth Boro Tellurite (AEBT) glasses doped with different concentrations Dy3+ ions have been prepared by using melt quenching technique and characterized spectroscopic techniques such as XRD, Raman, optical absorption, excitation, photoluminescence (PL) PL decay to understand their utility in optoelectronic devices lasers white light emitting diodes (wLEDs). The XRD spectrum revealed non-crystalline nature whereas the Raman phonon energy various functional groups present undoped host glass. intensities electronic transitions ligand field environment around were studied applying Judd-Ofelt (J-O) theory recorded absorption spectra AEBTDy glasses. J-O parameters used measure radiative for prominent fluorescent levels asprepared emission AEBT under 387 nm excitation show three 4F9/2 → 6H15/2 (blue), 4F9/2 → 6H13/2 (yellow), 4F9/2 → 6H11/2 (red) which yellow transition observed at 575 nm is highly intense. fluorescence curves 757 nm wavelength. experimental lifetimes (τexp) measured from spectral profiles are combined (τR) quantum efficiencies blue intensity ratios chromaticity color co-ordinates found vary ion concentrations. All aforementioned results finally that aptly suitable design development wLEDs lasers.