Structural, absorption and photoluminescence studies of Sm3+ ions doped barium lead alumino fluoro borate glasses for optoelectronic device applications

• Published in: Materials research bulletin 2019-02, Vol.110, p.159-168
• Main Authors: Rani, P. Rekha, Venkateswarlu, M., Mahamuda, Sk, Swapna, K., Deopa, Nisha, Rao, A.S., Prakash, G. Vijaya
• Format: Article
• Language: English
• Subjects: CIE coordinates; FT-IR; Glasses; Luminescence; Samarium; XRD
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2018.10.033

[Display omitted] •Sm3+ doped BaPbAlFB glasses were prepared by conventional melt quenching technique.•A sharp luminescence is observed in the red region under 402 nm excitation.•The J–O parameters are used to evaluate the radiative properties•BaPbAlFBSm1.0 glass can be suggested for visible optoelectronic devices. Samarium ions doped barium lead alumino fluoro borate glasses were prepared by conventional melt quenching technique and characterized by using various spectroscopic techniques. The amorphous nature and functional groups present host glass were confirmed by XRD and FT-IR spectra respectively. From the measured oscillator strengths the Judd-Ofelt (J–O) parameters were evaluated and subsequently used to estimate various radiative properties for the prominent fluorescent levels. The PL spectra show three transitions 4G5/2→6H5/2, 6H7/2, and 6H9/2 at 565 nm, 602 nm and 650 nm in greenish yellow, reddish orange and red regions respectively. The experimental lifetimes correlated with radiative lifetimes to calculate quantum efficiency of the as prepared glasses. The CIE chromaticity coordinates measured establishes reddish orange emission from the as prepared glasses. Based on the emission cross-sections, branching ratios, quantum efficiency and CIE coordinates, it is concluded that the Sm3+ ions doped as prepared glasses are aptly suitable for reddish orange optoelectronics device applications.