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

doi:10.1149/1.3600349

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

Research output: Contribution to journal › Article

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 language	English
Journal	Journal of the Electrochemical Society
Volume	158
Issue number	8
DOIs	https://doi.org/10.1149/1.3600349
Publication status	Published - 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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Fang, Y. C., Kao, P. C., Yang, Y. C., & Chu, S-Y. (2011). Two-step synthesis of SrSi₂O₂N₂: Eu ²⁺ green oxynitride phosphor: Electron-phonon coupling and thermal quenching behavior. Journal of the Electrochemical Society, 158(8). https://doi.org/10.1149/1.3600349

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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.",

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