Abstract:Effects of preparation methods (hydrothermal method and high temperature solid method), excitation condition, and Eu ions concentration on spectral properties of Ca2B5O9Cl∶Eu phosphor were studied. The effects of preparation condition on crystal photographs were also discussed. The result showed that the Ca2B5O9Cl∶Eu phosphors prepared with hydrothermal method had mainly 5D0→7FJ(J=1,2,3,4) emission of Eu3+ with 254 nm excitation and 4f65d1→8S7/2 emission of Eu2+ with 365 nm excitation, the one prepared with high temperature solid method had mainly 4f65d1→8S7/2 emission of Eu2+ with 365 nm excitation and very weak emissions of Eu2+ and Eu3+ with 254 nm excitation. Eu ions concentration hardly affected spectral properties, but the preparation method and excitation conditions had remarkable influence on the properties. SEM revealed that the products prepared both in the air and reductive atmosphere had consummate crystal, slippery surface and appropriate size (0.82-1.06 μm).
Key words:Hydrothermal method;High temperature solid method;Ca2B5O9Cl∶Eu;Spectral properties
董红军,常树岚*. 水热法与固相法制备Ca2B5O9Cl∶Eu光谱特性的研究[J]. 光谱学与光谱分析, 2007, 27(11): 2167-2170.
DONG Hong-jun,CHANG Shu-lan*. Study on Spectral Properties of Ca2B5O9Cl∶Eu Prepared with Hydrothermal Method and Solid Method. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(11): 2167-2170.
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