摘要
tiCaBO3：Eu^3＋ phosphor was synthesized by high solid-state reaction method, and its luminescent characteristics were investigated. The emission and excitation spectra of LiCaBO3：Eu^3＋ phosphors exhibited that the phosphors could be effectively excited by near ultraviolet （400 nm） and blue （470 nm） light, and emitted red light. The effect of Eu^3＋ concentration on the emission spectrum of LiCaBO3：Eu^3＋ phosphor was studied. The results showed that the emission intensity increased with increasing Eu^3＋ concentration, and then decreased because of concentration quenching. It reached the maximum at 3mol.% Eu^3＋, and the concentration self-quenching mechanism was the d-d interaction according to the Dexter theory. Under the conditions of charge compensator Li^＋, Na^＋ or K^＋ incorporated in LiCaBO3, the emission intensities of LiCaBO3：Eu^3＋ phosphor were enhanced.
tiCaBO3：Eu^3＋ phosphor was synthesized by high solid-state reaction method, and its luminescent characteristics were investigated. The emission and excitation spectra of LiCaBO3：Eu^3＋ phosphors exhibited that the phosphors could be effectively excited by near ultraviolet （400 nm） and blue （470 nm） light, and emitted red light. The effect of Eu^3＋ concentration on the emission spectrum of LiCaBO3：Eu^3＋ phosphor was studied. The results showed that the emission intensity increased with increasing Eu^3＋ concentration, and then decreased because of concentration quenching. It reached the maximum at 3mol.% Eu^3＋, and the concentration self-quenching mechanism was the d-d interaction according to the Dexter theory. Under the conditions of charge compensator Li^＋, Na^＋ or K^＋ incorporated in LiCaBO3, the emission intensities of LiCaBO3：Eu^3＋ phosphor were enhanced.
基金
supported by Hebei Provincial Technology Development Foundation (51215103b)
Science Foundation of Hebei University (2006Q06)
Natural Science Foundation of Hebei Province (E2009000209)
