Barcode structure fluorescent ceramics for white light LED devices and its preparation method and application
A technology of LED devices and fluorescent ceramics, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as color rendering index and color temperature difference, achieve low color temperature, good luminous effect, improve luminous efficiency and service life.
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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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