Monocrystal, a sapphire growing and processing company in Stravopol, Russia, recently unveiled the first 350 kg sapphire crystal. The company says that the 350 kg crystal is part of its technological roadmap that targets higher crystal uniformity and more efficient growth of large diameter ingots for optical, size-sensitive, and LED applications.
The company achieved low bubble content with the 350 kg crystal, which is critical for ultra-large sapphire products. The company also intends to dramatically increase sapphire supply reliability because major LED fabricators are increasing their production capacities.
“Our ongoing “Extra Large Stress Free” initiative is in response to challenging conditions on our main market: sapphire for LEDs,” Monocrystal’s CEO Oleg Kachalov commented. “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.”
“We also have received a very positive feedback from the non-LED market since the introduction of our extra-large crystals in 2015. Working closely with our partners, we have already enabled several promising large-size applications. We are confident that our new 350 kg crystals will allow greater flexibility of our customers’ designs and further expand the scope of sapphire use,” Monocrystal’s vp of sales Mikhail Berest added.