| Nanoscaled luminescent materials have been the hot reasearch because of their peculiar characteristics compared to bulk counterparts. Zirconates have excellent thermal and chemical stability. They are an important kind of photoactived host material. At present, solid state reaction method has been used to prepare zirconates, while wet chemistry method is less reported. In this dissertation, zirconate luminescent nanomaterials prepared by citrate sol-gel combustion method have been reported, and their photoluminescent properties were investigated systemically, some new luminescent phenomena were detected.In Chapter 1, we briefly introduced the theory of luminescence, the luminescent mechanism, preparation methods, characterization mains and properties of lanthanide luminescent materials.The research progress in the field of zirconate luminescent materials was also summarized.In Chapter 2, we prepare the nanometre powder MZrO3(M=Ba,Ca) by citrate sol-gel combustion method under different temparature and analyze the sample's structure using XRD, investigate clearly the sample through transmission electron microscope with the result of the luminescent mechanism of nanoscaled materials.In Chapter 3, we prepare the BaZrO3 powder composed of perovskite by citrate sol-gel combustion method under 700℃and even short time mixing Eu3+ and Dy3+ of different densities for the purpose of the research on the luminescent features, the result of which shows that BaZrO3 powder presents good luminescent feature and the mixed sample shows strong organge light radiation between 590nm-630nm. The fact that the density of 5D0→7F1 is stronger than 5D0→7F2 suggests that structure BaZrO3 lies in the middle symmetrical positon and the luminescent density varies as the density of Eu3+ change from high degree to low degree reaching the maximum value in the density of 5mol%. However, the mixed sample shows strong yellow and blue light respectively in 575nm and 480nm. Owing to the fluorescent light quenching effect, the density first increase and then reduce reaching the premium mixed density in 1.0mol%. In Chapter 4, we prepare the CaZrO3 powder composed of perovskite by citrate sol-gel combustion method under 700℃and even short time mixing Eu3+ and Dy3+ of different densities for the purpose of the research on the luminescent features, the result of which shows that BaZrO3 powder presents good luminescent feature and the mixed sample shows strong organge light radiation between 590nm-630nm. The fact that the density of 5D0→7F2 is stronger than 5D0→7F1 suggests that structure CaZrO3 lies in the deviation postion of symmetrical ones, which is different from that of leminescent in BaZrO3 And the luminescent density varies as the density of Eu3+ change from high degree to low degree reaching the maximum value in the density of 5mol%. However, the mixed sample shows strong yellow and blue light respectively in 575nm and 485nm. Among which, the bule light is stronger than the yellow light, which suggests the high symmetry degree of Dy3+ in CaZrO3 and the premium density lies in 2.0mol% with no clear density quenching.In Chapter 5, we prepare BaZrO3and CaZrO3 powder with the same method mixing Er3+ of different densities and make a research on the luminescent characteristics.The radiation spectrum peak of BaZrO3 is similar to that of CaZrO3 with Er3+ mixed, which are composed of two peaks placing in 524nm and 547nm respectively. However, the strongest density comes from 547. The density of mixed Er3+ has little effect on the radiation peak but a lot on the luminescent density. The best mixed densitiy of Er3+ is lmol% in the Er3+:BaZrO3 samples. When the density is more than lmol%, the radiation power will be reduced with the effect of quenching effect. As the density increases from lmol% to 3mol% in the Er3+:CaZrO3 samples, the density becomes stronger, therefore, when the density reaches to3mol%, there is no quenching of density.In chapter 6, the concise summary of the contents was given.
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