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Citation: Li Youmo, Jia Qingxin, Hong Guangyan, Lu Hongde. EFFECT OF NH₄X(X=F.Cl.Br) ON LUMINESCENCE OF LnBO₃: Ce³⁺[J]. Chinese Journal of Applied Chemistry, ;1984, 1(4): 17-22. shu

EFFECT OF NH₄X(X=F.Cl.Br) ON LUMINESCENCE OF LnBO₃: Ce³⁺

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 7 April 1984
Available Online: 1 June 1984

Some LnBO₃: Ce³⁺(Ln=La,Gd or Y) phosphors were synthesized through solid state reaction. It was found that addition of NH₄X to LnBO₃:Ce³⁺ during firing increases the luminesence intensity of phosphors without changing the peak positions of excitation and emission spectra. As the radius of Ln³⁺ decreases and the crystal structure of LnBO₃: Ce³⁺ changes from orthorhombic to hexagonal, the peak position of excitation and emission spectra of LnBO₃: Ce³⁺ shift to longer wavelengths, showing an ob-vious influence of crystal-field on the 5d-4f transition of Ce³⁺.
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EFFECT OF NH4X(X=F.Cl.Br) ON LUMINESCENCE OF LnBO3: Ce3+

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EFFECT OF NH₄X(X=F.Cl.Br) ON LUMINESCENCE OF LnBO₃: Ce³⁺