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<p>By an energy conserved solution combustion (SC) method, orthorhombic strontium lanthanum based Sm<sup>3+</sup> activated BaSrLa<sub>4</sub>O<sub>8</sub> nanosystem with good orange light emission was prepared. Its crystal prototype belonging to the Pnma (162) space group has its dimensions between 44&#xa0;nm and 70&#xa0;nm. The surface facets were analyzed by scanning and transmission electron microscopes (SEM and TEM). With ultraviolet irradiation, the crystals formed generate orange-red light having a wave number of 610&#xa0;nm owing to the electronic transition from <sup>4</sup>G<sub>5/2</sub>→<sup>6</sup>H<sub>7/2</sub> state. The maximum emission intensity during excitation at 411&#xa0;nm was noticed at 3.0&#xa0;mol% Sm<sup>3+</sup> concentration. The mixed color coordinates fall in the reddish-orange domain and the relative color temperature (CCT) of the optimal sample is measured as 1718&#xa0;K which expands the application province of the given nanocrystals in numerous optoelectronics.</p>

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Achieving orange-red emission via the incorporation of Sm3+ ions in strontium-lanthanum-based host matrix BaSrLa4O8 for advanced optoelectronic applications

  • 期刊论文

  • 发表日期：

    2025年11月28日

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  • Ritu Kataria,
  • Manav Kaushik,
  • Anshul Singh,
  • Mukesh Kumar

摘要

By an energy conserved solution combustion (SC) method, orthorhombic strontium lanthanum based Sm3+ activated BaSrLa4O8 nanosystem with good orange light emission was prepared. Its crystal prototype belonging to the Pnma (162) space group has its dimensions between 44 nm and 70 nm. The surface facets were analyzed by scanning and transmission electron microscopes (SEM and TEM). With ultraviolet irradiation, the crystals formed generate orange-red light having a wave number of 610 nm owing to the electronic transition from 4G5/2→6H7/2 state. The maximum emission intensity during excitation at 411 nm was noticed at 3.0 mol% Sm3+ concentration. The mixed color coordinates fall in the reddish-orange domain and the relative color temperature (CCT) of the optimal sample is measured as 1718 K which expands the application province of the given nanocrystals in numerous optoelectronics.