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

Chao Yu Chang, Tsung Hsien Hsu, Cheng Liang Huang

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number113361
JournalOptical Materials
Volume135
DOIs
Publication statusPublished - 2023 Jan

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Novel and thermostable double-perovskite La2ZnTiO6: Sm3+, Dy3+ phosphors with high quantum efficiency'. Together they form a unique fingerprint.

Cite this