13 March 2017
Monocrystal introduces first 350kg KY sapphire crystal
Monocrystal Inc of Stavropol, Russia, which manufactures large-diameter synthetic sapphire substrates and cores for LED, optical product and RFIC applications has demonstrated what it claims is the first 350kg Kyropoulos (KY) sapphire crystal.
The 350kg crystal is a part of Monocrystal’s technological roadmap, aimed at enabling higher crystal uniformity, more efficient large-diameter ingot throughput for LED, and size-sensitive optical applications. Low bubble content, which is crucial for ultra-large sapphire products, has been achieved with the 350kg crystal. Another objective of the roadmap is to move Monocrystal’s sapphire supply reliability to a new level, which is now of paramount importance since major LED makers are increasing their capacities, says Monocrystal.
“Our ongoing ‘Extra Large Stress Free’ initiative is in response to challenging conditions on our main market: sapphire for LEDs,” says CEO Oleg Kachalov. “Extra-large crystals enable high crystal uniformity across a 6” wafer surface and guarantee uniform wavelength distribution. Our LED customers are able to ramp up their production securely, having Monocrystal as a reliable source,” he adds.
“We also have received a very positive feedback from the non-LED market since the introduction of our extra-large crystals in 2015,” says VP sales Mikhail Berest. “Working closely with our partners, we have already enabled several promising large-size applications. We are confident that our new 350kg crystals will allow greater flexibility of our customers’ designs and further expand the scope of sapphire use.”