| Summary: | 碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 96 === The research is attempted to synthesize Ca2MgSi2O7:Eu Phosphor by using solid-state reaction method. Futhermore, Also study several controlling factors that could affect the luminescence charactics of phosphor, such as firing temperature, firing time, doped with different amounts of the activator and added with different flux (B2O3 , CaCl2). The results appeared add a little flux could help to synthesize the pure phase of Ca2MgSi2O7 at firing temperature 1300℃, firing time 4hrs. Futhermore, it could enhance the intensity with increasing the firing temperature and time
Under reducing atmosphere to synthesize Ca2MgSi2O7:Eu2+ phosphor, the emission spectrum excited by 450nm, emitted yellowish – green emission peak at 535nm due to 6P7/2→8S7/2 transition of Eu2+. It could observe the intensity of emission spectrum would trend to enhance when the molar fraction of Eu2+ was increased. It reached to maxium when doping with 0.09 mole Eu2+.
Under air atmosphere to synthesize Ca2MgSi2O7:Eu2+ phosphor, the emission spectrum excited by 395nm, showed red light wavelength range were 580nm, 593nm, 618nm, 652nm and 704nm, were correspond to 5D0→7F0、5D0→7F1、5D0→7F2、5D0→7F3 and 5D0→7F4 transitions, respectively. It could observe the intensity reach to maxium when doping with 0.03 mole Eu3+.
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