Effect of alkali oxide on optical and luminescence properties of Sm3+ doped aluminium phosphate glasses

Physical, optical and luminescence properties of lithium aluminium phosphate (LAPSm), sodium aluminium phosphate (NAPSm) and potassium aluminium phosphate (KAPSm) glasses doped with 0.5 mol% of Sm2O3 have been investigated. The results found that all glass samples are clear, homogenous and transparency. The optical absorption spectra are shown strong absorption bands in the visible (VIS) and near-infrared (NIR) region for all doped samples. The emission spectra of all doped glass samples exhibited four peaks correspond to the energy transition (4)G(5/2) -> H-6(5/2) (562 nm), (4)G(5/2) -> H-6(7/2) (597 nm), (4)G(5/2) -> H-6(9/2) (644 nm) and (4)G(5/2) -> H-6(11/2) (704 nm) have been observed under 401 (H-6(5/2) -> P-6(3/2)) nm excitation wavelength. Also, the CIE chromaticity analysis yields reddish-orange light emission for all glass samples. It was observed that the emission intensity LAPSm glass is higher than NAPSm and KAPSm glasses. Hence LAPSm glass could be considered as a good optical glass for Sm3+ dopant for reddish-orange emission material. (C) 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of SACT 2016.