Preparation And Properties Of Field Emission Flat Display Phosphor

Field Emission Display (FED) has many characteristics such as highdefinition, viewing angle and so on, it’s the inevitable trend of the future. And therequirements of structure and luminescent properties of fluorescent materials isvery high. Now, the difficulties lie in exploring luminescent material that haselectrical conductivity, surface topography and luminescent intensity.In this paper, the luminescent material of ZnO substrates was prepared bythe methods of high-temperature solid-phase, co-precipitation and staticelectricity. In accordance with the luminous intensity, compare the advantagesand disadvantages of the three preparation methods through orthogonal design.And we know that the amount of rare earth doped is minimum, calcinationtemperature is lowest, it’s a valuable method of phosphor preparation. Theluminous intensity of the samples prepared by coprecipitation is highest, holdingtime is shortest, better performance and energy saving, which corresponds to thecurrent application status. The process conditions of high-temperature solid-phase in samples preparation are the worst of the three.The luminescent material of ZnO: Eu, Mn prepared by static electricity isBlu-ray material. Explore the influences on luminous intensity, crystallinity andsurface morphology such as the amount of Mn doped, burning temperature andholding time through differential thermal-thermal (TG-DTA), X-ray diffraction,scanning electron microscopy and fluorescence spectroscopy. And the optimalprocess parameters is that the main emission peak located at410nm offluorescence spectra, calcination temperature is800°C, holding time is4h, andthe molar ratio of Eu and Mn is1:1, these consistent with the orthogonal experiment. The ZnO:Tm,Gd, phosphor was successfully prepared by co-precipitation, and it has a blue light-emitting. Study the impacts of its fluorescentproperties by changing the process parameters and the doping amount. Anddetermine it that the main emission peak is at410nm, and the optimal processparameters is calcination temperature is900°C, holding time is3h, and the molarratio of Tm and Gd is1:1.