Photoluminescence Properties of SrSi₂O₂N₂ Doped with Divalent Ytterbium Phosphor in Nitrogen-Rich Coordination

Abstract:

Yb²⁺ -doped SrSi₂O₂N₂ had been successfully synthesized using a conventional solid-state reaction method under reducing atmosphere. The phase and luminescence properties of the SrSi₂O₂N₂ phosphors were investigated. Being an orange-red emitting phosphors, SrSi₂O₂N₂:Yb was an emission peaking at 605 nm. With the increasing amount of Yb²⁺, the optical band gap of SrSi₂O₂N₂ was decreased. The optical band gap of SrSi₂O₂N₂ is decreased by Yb²⁺ increasing. The luminescence spectra of the nitrogen-rich coordination of Yb²⁺ in SrSi₂O₂N₂ can be promoted. The concentration quenching mechanism of Yb²⁺ emission was responsible for the electric dipole–dipole interaction.

• Periodical: Key Engineering Materials (Volume 726)
• Pages: 266-270
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.726.266
• Online since: January 2017
• Authors: Xi Guang Gu, Ren Li Fu*, Fang Yang
• Keywords: Luminescent Property, Nitrogen-Rich Coordination, SrSi₂O₂N₂

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