Sm3+ IONS DOPED BOROSILICATE GLASS FOR VISIBLE PHOTONIC DEVICE APPLICATIONS

Abstract

An intense reddish-orange colour radiating Samarium doped Aluminium Calcium borosilicate (BSACS) glasses were synthesized with the help of the melt-quench method to analyze the photoluminescence properties using characterization methods like XRD, FT-IR, photoluminescence (PL) excitation, PL emission, and PL decay. XRD and FT-IR reveal the non-crystalline behavior along with the presence of numerous functional groups in BSACS host glass correspondingly. Under 402 nm excitation, three major peaks were found in the emission spectra which perfectly resembles to 4G5/2 → 6H5/2 (562 nm), 4G5/2 → 6H7/2 (599 nm), and 4G5/2 → 6H9/2 (646 nm) transitions of Samarium ions. 4G5/2 → 6H9/2 transition at 599 nm is comparatively more intense and noticeable. PL decay observed for 4G5/2 state reveals the exponential nature in which curves are fitted by using bi-exponential and tri- exponential fitting to assess the practically measured lifetimes (τexp). It is observed that the τexp values are decreasing with increasing Samarium ion concentration due to the cross-relaxation energy transference. All of the findings indicate that Sm3+ doped borosilicate glass is suitable for its usage in visible reddish orange photonic devices.