Seeding method for growth of sapphire crystal with KY (Kyropoulos) method
A technology of sapphire crystal and Kyropoulos method, which is applied in the direction of single crystal growth, crystal growth, single crystal growth, etc., can solve the problems of poor crystal quality, seeding does not completely eliminate dislocations, etc., to improve crystal yield and increase energy The effect of loss, defect and dislocation elimination
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Embodiment 1
[0035] The present invention is a seeding method for growing sapphire crystals by Kyropoulos method, said method comprising the steps of:
[0036] Step 1: Set as image 3 The non-rotationally symmetrical structure of the opening shown adopts the non-rotationally symmetrical included angle structure, and the upper heat reflecting structure with an included angle of 75 degrees is installed in the Kyropoulos sapphire growth equipment;
[0037] Step 2: Vacuum the crystal growth furnace loaded with raw materials to a vacuum of ~10 -3 Pa;
[0038] Step 3: Control the temperature of the crystal growth furnace to 2000-2100°C through a heater, and wait until the sapphire raw material is melted into a melt.
[0039]Step 4: Put the seed crystal, test the temperature, adjust the power or voltage, so that the seed crystal does not melt and grow when it contacts the melt, dip the seed crystal into the liquid surface of the melt for 3mm; use the pulling speed of 3mm / h, 1mm The instant...
Embodiment 2
[0044] The present invention is a seeding method for growing sapphire crystals by Kyropoulos method, said method comprising the steps of:
[0045] Step 1: Set as Figure 4 The non-rotationally symmetrical structure of the opening shown is installed in the Kyropoulos sapphire growth equipment with a "T"-shaped upper heat reflection structure rotated 90 degrees counterclockwise;
[0046] Step 2: Vacuum the crystal growth furnace loaded with raw materials to a vacuum of ~10 -3 Pa;
[0047] Step 3: Control the temperature of the crystal growth furnace to 2000-2100°C through a heater, and wait until the sapphire raw material is melted into a melt.
[0048] Step 4: Put the seed crystal, test the temperature, adjust the power or voltage, so that the seed crystal does not melt and grow when it contacts the melt, dip the seed crystal into the liquid surface of the melt for 3mm; use the pulling speed of 6mm / h, 1mm The instant lifting height and the clockwise rotation at a given a...
Embodiment 3
[0053] The present invention is a seeding method for growing sapphire crystals by Kyropoulos method, said method comprising the steps of:
[0054] Step 1: Set as Figure 5 The non-rotationally symmetrical structure of the opening shown is installed in the Kyropoulos sapphire growth equipment with an "L"-shaped upper heat reflection structure;
[0055] Step 2: Vacuum the crystal growth furnace loaded with raw materials to a vacuum of ~10 -3 Pa;
[0056] Step 3: Control the temperature of the crystal growth furnace to 2000-2100°C through a heater, and wait until the sapphire raw material is melted into a melt.
[0057] Step 4: Put the seed crystal, test the temperature, adjust the power or voltage so that the seed crystal does not melt and grow when it contacts the melt, dip the seed crystal into the liquid surface of the melt for 5mm; use the pulling speed of 8mm / h, 1mm The instantaneous lifting height and the counterclockwise rotation of a given angle of 15 degrees are ...
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