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Insight into Eu

Xiangyu Han1,2, Chengrui Xin2, Shuxian Wang1

  • 1State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China.

Inorganic Chemistry
|June 9, 2023
PubMed
Summary
This summary is machine-generated.

Researchers modulated lanthanide ion luminescence by introducing Europium (Eu3+) into phase-change K3Lu(PO4)2. Temperature-induced phase transitions altered Eu3+ photoluminescence, enabling a novel information encryption strategy.

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Area of Science:

  • Materials Science
  • Inorganic Chemistry
  • Luminescence

Background:

  • Lanthanide luminescent ions' optical properties are sensitive to their local coordination environment.
  • Phase-change materials offer tunable properties through structural transitions.

Purpose of the Study:

  • To investigate the impact of temperature-induced phase transitions in K3Lu(PO4)2 on Europium (Eu3+) ion photoluminescence.
  • To explore the potential of Eu3+-doped K3Lu(PO4)2 for optical applications, including information encryption.

Main Methods:

  • Synthesis of Eu3+-doped K3Lu(PO4)2 phosphors.
  • Temperature-dependent photoluminescence spectroscopy to analyze Eu3+ emission.
  • Investigation of phase transitions in K3Lu(PO4)2 using luminescence probes.

Main Results:

  • Temperature-induced phase transitions (I ⇆ II, II ⇆ III) in K3Lu(PO4)2 significantly modulated Eu3+ photoluminescence.
  • Eu3+ emission spectra showed distinct differences across phases, particularly in the 5D0 → 7F1,2 transitions.
  • Doping concentration influenced phase evolution and stabilized low-temperature polymorphs.

Conclusions:

  • Eu3+-doped K3Lu(PO4)2 exhibits tunable luminescence based on temperature-induced phase transitions.
  • A viable information encryption method was demonstrated using the temperature hysteresis of phase transitions.
  • This work highlights the potential of phase-change hosts for advanced lanthanide-based optical materials.