Sapphire Single Crystal AL2O3 Glass Semiconductor Substrate
About Sapphire Single Crystal
Sapphire single crystal have an interesting combination of mechanical, optical, and thermal properties, with zero porosity. It is precisely because of these characteristics that sapphire products are widely used in technology. As an important technical crystal, sapphire crystal has been widely used in many fields of science and technology, national defense and civil industry, and electronic technology. Such as infrared window materials, substrate substrates in the field of microelectronics, laser substrates, optical components and other uses.
Sapphire Single Crystal Chemical Properties
Sapphire single crystal, whose chemical composition is oxygen alumina, chemical formula (α-Al2O3), is composed of three oxygen atoms and two aluminum atoms combined by covalent bonds, and its crystal structure is a hexagonal lattice structure. Its greatest demand is as a raw material for the manufacture of optical and electronic instruments. Sapphire wafers can be used as substrates for sputtering silicon wafers (КНС structure) on which radiation-stable, fast-response integrated circuits (ИС) are manufactured. The sapphire wafer can also be used as the substrate of the gallium nitride wafer and its solid solution, based on which the spectrum diodes of various colors of the rainbow can be formed, and its power consumption is 10-15 times lower than that of an incandescent lamp under the same brightness condition.
Sapphire Single Crystal Production Process
The production process of artificial sapphire crystal: preparing raw materials → filling raw materials and erecting seed crystals → vacuuming the furnace body → heating the furnace body (adding molybdenum heat shield and tungsten heat shield to the furnace body) → melting raw materials → welding seed crystals → crystal neck growth → Crystal growth → separation of the crystal from the crucible (most of the crucibles inside are resistant to high temperatures.) → cooling → take out the crystal. There are currently two main crystal growth processes in the world:
one is the crystal growth process originated from the former Soviet Union: Kyropoulos method;
the other is the crystal growth process originated from the United States: water heat exchange method.
Sapphire Single Crystal Kyropoulos Method
Sapphire Single Crystal Water Heat Exchange Method
Sapphire Crystal Slice
The growth and slicing of sapphire crystals are very similar to the production and slicing of monocrystalline silicon in terms of technology, and the construction of sapphire crystal projects conforms to the industrial policies of most countries. It is a product encouraged by some countries and has good market prospects. It can promote energy conservation Development of related products.
The sapphire crystal growth and slicing project is the core link of the LED industry chain, and its products are one of the most important upstream raw materials in the LED industry. LED is short for light-emitting diode, which has the characteristics of high luminous efficiency, environmental protection, long life, and small size. The most advanced lighting technology in the world at present. Sapphire wafers have become the key materials for making white/blue/green LEDs, and the supply has been in short supply in the LED application field.
In the field of LED manufacturing, there are currently only two kinds of substrates that can be used for commercialization, namely sapphire and silicon carbide substrates, but silicon carbide substrates are expensive. Therefore, 80% of global LED companies use sapphire as the main raw material for manufacturing LED products. Due to the high hardness of sapphire, it is difficult to process; especially the slicing process is more difficult. Ordinary sapphire slicers will have many problems during the working process, causing product quality to decline or even scrapped.
Sapphire Crystal We Can Supply
Shanghai Xinkehui New Material have our own factory for sapphire growing, no matter what shape you need, we can supply the the custom size for you.
more information about our sapphire crystal, welcome to contact with Mr. Gery
Tel&Whatsapp +86-18621835134
Email: gery@xinkehui.cn
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