Novel and thermostable double-perovskite La2ZnTiO6: Sm3+, Dy3+ phosphors with high quantum efficiency

Chao Yu Chang, Tsung Hsien Hsu, Cheng Liang Huang

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

Double-perovskite samarium- and trivalent dysprosium-doped La2ZnTiO6 (LZTO: Sm3+ and LZTO: Dy3+) phosphors were prepared by a solid-state reaction method, and their luminescence properties were systemically investigated by Rietveld refinement, scanning electron microscopy (SEM) analysis, emission/excitation spectra, and thermal quenching measurement. Under the excitation of a 325 nm laser, the individually Sm3+- and Dy3+-doped phosphors reveal a characteristic and strong red emission peak at 602 nm and yellow emission at 575 nm, respectively. The samples also achieve excellent quantum efficiency (QE), which is as high as 52% for LZTO: Sm3+ and 93% for LZTO: Dy3+. In addition, the thermal stability remains strong and retains >63% and 61.3% of the original luminescence intensity at 475 K for the single Sm3+- and Dy3+-doped phosphors, respectively.

原文English
文章編號113361
期刊Optical Materials
135
DOIs
出版狀態Published - 2023 1月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 光譜
  • 物理與理論化學
  • 有機化學
  • 無機化學
  • 電氣與電子工程

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