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Citation: Li Youmo. THE LUMINESCENCE OF Ce³⁺ IN LnOX (Ln=La,Gd OR Y;X=Cl,Br OR I)[J]. Chinese Journal of Applied Chemistry, ;1987, 4(3): 35-38. shu

THE LUMINESCENCE OF Ce³⁺ IN LnOX (Ln=La,Gd OR Y;X=Cl,Br OR I)

Li Youmo

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 9 June 1986
Available Online: 17 July 1986
Fund Project:

The luminescence of Ce³⁺ in LnOX was studied by excitation and emission spectroscopy. The LnOX studied belong to the same structure type, tetragonal, with space group D_4h⁷-P₄/nmm, site symmetry of Ln³⁺ C_4v. The spectra show that when X is kept identical but with different Ln the spectra only manifest minor differences:whereas with different X there are rather noticeable changes in spectra, the corresponding peaks in the spectra shift to lower energy in the order of Cl-Br-I. Some differences were observed in the behavior of La compound in comparing with that of Gd or Y compounds, especially in the excitation spectra. It was discussed in terms of the differences bstween ionic radius of Ce³⁺ and those of the host cations.
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THE LUMINESCENCE OF Ce3+ IN LnOX (Ln=La,Gd OR Y;X=Cl,Br OR I)

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THE LUMINESCENCE OF Ce³⁺ IN LnOX (Ln=La,Gd OR Y;X=Cl,Br OR I)