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RE3+, Li+ 이 첨가된 ZnGa2O4 의 발광특성에 관한 연구
이명진,박희동,김용태,윤기현,전애경,유호진,최대규,정경원 대한금속재료학회(대한금속학회) 2001 대한금속·재료학회지 Vol.39 No.2
The photoluminescence characteristics of lithium and trivalent rare-earth ions(Ce^(3+), Dy^(3+), Tm^(3+)) doped ZnGa₂O₄ with solid state reaction methods were studied. Under 254 ㎚ excitation, the absorption band at 245 ㎚ and the emission band at 380 ㎚ in reduced ZnGa₂O₄ phosphor were observed, which were originated from ⁴T₂→⁴A₂ transition of the octahedral Ga^(3+) ions in the spinel lattice. The incorporation of lithium and trivalent rare-earth ions into the ZnGa₂O₄ lattices results in the emission peak shift of nearly 50 ㎚ towards long wavelength region and improving the emission intensity and color purity.