Barcode-structure fluorescent ceramic for white LED devices and preparation method and application thereof
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Embodiment 1
[0036] In this embodiment, the fluorescent ceramic structure such as figure 1 As shown, there are two kinds of ceramic units: GGAG:Ce 3+ and GGAG:Eu 3+ composition, figure 1 The middle white filled part represents the ceramic unit GGAG:Ce 3+ , the black filled part represents the ceramic unit GGAG:Eu 3+ ; These two ceramic unit structures are exactly the same, in the form of a cube, the thickness, length and width are equal, the thickness is 0.15-45mm, the length is 0.05-50mm, and the width is 0.01-30mm; assuming that the X axis and the Y axis are perpendicular to each other, the two is the coordinate axis constituting the horizontal plane, then the two ceramic units are arranged alternately and closely along the X-axis direction, forming an overall structure similar to a barcode.
[0037] The fluorescent ceramics are obtained by dry pressing, and the specific preparation method is as follows:
[0038] (1) According to figure 1 Design the mold according to the barcode st...
Embodiment 2
[0044] In this embodiment, the fluorescent ceramic structure such as Figure 6 As shown, there are two kinds of ceramic units: GGAG:Ce 3+ , GGAG:Bi 3+ and GGAG:Eu 3+ composition, Figure 6 The filled part of the oblique line indicates the ceramic unit GGAG:Ce 3+ , the white filled part represents the ceramic unit GGAG:Bi 3+ , The black filled part indicates the ceramic unit GGAG:Eu 3+ The structure of these three ceramic units is exactly the same, in the form of a cube, with the same thickness, length and width, the thickness is 0.15-45mm, the length is 0.05-50mm, and the width is 0.01-30mm; assuming that the X axis and the Y axis are perpendicular to each other, the two is the coordinate axis constituting the horizontal plane, then the three ceramic units are alternately arranged closely along the X-axis and the Y-axis direction, forming an overall structure similar to a barcode.
[0045] The fluorescent ceramic with barcode structure is obtained by dry pressing, and th...
Embodiment 3
[0051] In this embodiment, the fluorescent ceramic structure such as figure 1 As shown, there are two kinds of ceramic units: GGAG:Ce 3+ and GGAG:Pr 3+ composition, figure 1 The middle white filled part represents the ceramic unit GGAG:Ce 3+ , the black filled part represents the ceramic unit GGAG:Pr 3+ ; These two ceramic unit structures are exactly the same, in the form of a cube, the thickness, length and width are equal, the thickness is 0.15-45mm, the length is 0.05-50mm, and the width is 0.01-30mm; assuming that the X axis and the Y axis are perpendicular to each other, the two is the coordinate axis constituting the horizontal plane, then the two ceramic units are arranged alternately and closely along the X-axis direction, forming an overall structure similar to a barcode.
[0052] The fluorescent ceramic with barcode structure is obtained by tape casting method, and the specific preparation method is as follows:
[0053] (1) Dosing according to the components of ...
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