Effects of Doping Lanthanide Ions in YAG∶Ce System on the Spectral Properties of Ce3+

Chem. J. Chinese Universities

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Effects of Doping Lanthanide Ions in YAG∶Ce System on the Spectral Properties of Ce³⁺

KONG Li¹, GAN Shu-Cai¹, HONG Guang-Yan²*, YOU Hong-Peng², ZHANG Ji-Lin²

1. College of Chemistry, Jilin University, Changchun 130023, China;
2. State Key Laboratory of Rare Earth Resources and Application, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:2007-09-24 Revised:1900-01-01 Online:2008-04-10 Published:2008-04-10
Contact: HONG Guang-Yan

Abstract

Abstract: (Y_0.95Ln_0.01Ce_0.04)₃Al₅O₁₂ phosphors were synthesized by high-temperature solid state reaction under reducing atmosphere and the doping effects of lanthanide ions(Ln³⁺) on the luminescence properties of phosphors were studied. YAG∶Ce,Ln spectra of excitation and emission show that the influence between Ce³⁺ and Ln³⁺ can be divided into the following three types: (1) The Ce³⁺ emission intensities are decreased slightly in the YAG∶Ce doped with La³⁺, Gd³⁺ and Lu³⁺, respectively. (2) Because of the energy transfer and competitive absorption, for Pr³⁺, Sm³⁺, Tb³⁺, Dy³⁺, Ho³⁺, Er³⁺, Tm³⁺ co-doped YAG∶Ce, the Ce³⁺ emission intensities are observably decreased. In the YAG∶Ce,Pr system, the emission of Pr³⁺ is at 609 nm; and in the YAG∶Ce,Sm system, the emission of Sm³⁺ is at 616 nm. So it can increase the color rendering index(CRI) of YAG∶Ce doped with Pr³⁺ or Sm³⁺. (3) It was found that doping with Eu³⁺, Yb³⁺ and Nd³⁺in YAG∶Ce the Ce³⁺ emission intensities quenched strongly.

Key words: YAG∶Ce, white-LED, Ln³⁺, photoluminescence

CLC Number:

O614.33

TrendMD:

KONG Li¹, GAN Shu-Cai¹, HONG Guang-Yan²*, YOU Hong-Peng², ZHANG Ji-Lin². Effects of Doping Lanthanide Ions in YAG∶Ce System on the Spectral Properties of Ce³⁺[J]. Chem. J. Chinese Universities, doi: .

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Effects of Doping Lanthanide Ions in YAG∶Ce System on the Spectral Properties of Ce³⁺

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