Luminescence and Energy Transfer in Ca3Sc2Si3O12:Ce3+,Mn2+ White LED Phosphors

Authors

• Yongfu Liu, Chinese Academy of Sciences
• Xia Zhang, Chinese Academy of Sciences
• Zhendong Hao, Chinese Academy of Sciences
• Yongshi Luo, Chinese Academy of Sciences
• Xiao-Jun Wang, Georgia Southern UniversityFollow
• Li Ma, Georgia Southern UniversityFollow
• Jiahua Zhang, Chinese Academy of Sciences

Document Type

Article

Publication Date

1-2013

Publication Title

Journal of Luminescence

DOI

10.1016/j.jlumin.2011.12.052

Abstract

Expanded emission spectra ranging from green to red are reported in Ca₃Sc₂Si₃O₁₂ (CSS):Ce³⁺,Mn²⁺silicate garnets. Mn²⁺ may occupy Ca²⁺ site (Mn²⁺(I)) to generate a yellow emission band at 574 nm or Sc³⁺site (Mn²⁺(II)) with red emission band at 680 nm. Efficient energy transfers from the green emitting Ce³⁺ to both Mn²⁺(I) and Mn²⁺(II) occur upon blue excitation into Ce³⁺. Concentration dependence of Mn²⁺emission is analyzed based on Ce³⁺–Mn²⁺ energy transfer, steady state rate equations, and fluorescence lifetimes. Energy transfer efficiency (η_T) and rate (W) are calculated with values as high as 45% and 14.01×10⁶ s⁻¹, respectively.

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Recommended Citation

Liu, Yongfu, Xia Zhang, Zhendong Hao, Yongshi Luo, Xiao-Jun Wang, Li Ma, Jiahua Zhang. 2013. "Luminescence and Energy Transfer in Ca3Sc2Si3O12:Ce3+,Mn2+ White LED Phosphors." Journal of Luminescence, 133: 21-24: Elsevier. doi: 10.1016/j.jlumin.2011.12.052
https://digitalcommons.georgiasouthern.edu/physics-facpubs/29

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