Two-step synthesis of SrSi2O2N2: Eu 2+ green oxynitride phosphor: Electron-phonon coupling and thermal quenching behavior

Ying Chien Fang, Po Ching Kao, You Cheng Yang, Sheng-Yuan Chu

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46 Citations (Scopus)

Abstract

SrSi2O2N2: Eu2+ green phosphors are prepared using a convenient solid-state reaction with Sr 2SiO4: Eu2+ as the precursor. The activation energy of crystallization, electron-phonon coupling, and thermal quenching behavior are investigated using differential thermal analysis (DTA) spectra and photoluminescence measurements. SrSi2O2N2: Eu2+ green phosphors exhibit excellent thermal stability and color stability due to their weak electron-phonon coupling strength (Huang-Rhys factor 4.2). The thermal quenching temperature (T50) of SrSi 2O2N2: Eu2+ is above 200 C. Results show that SrSi2O2N2: Eu2+ green phosphors have a broad excitation band and good thermal stability, making them suitable for use in solid-state lighting and GaAsAl solar cells.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume158
Issue number8
DOIs
Publication statusPublished - 2011 Aug 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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