Monocrystal of Stravopol, Russia, announced the release of its new Ultra-Clean sapphire wafers. The company says it applied its cleaning technology to achieve a breakthrough in wafer surface quality. According to Monocrystal, high-precision optoelectronic applications including microLEDs require such high surface quality sapphire wafers. Furthermore, a number of leading LED producers are developing microLEDs for next generation light sources, wearable devices, and high-resolution displays.
Micro LEDs feature significant advantages compared to conventional LEDs in terms of brightness and power consumption. Monocrystal says its new Ultra-Clean (UC) sapphire wafers have just 20-50 particles that are no more than 1 micron in size on their surface. Such clean, high-quality wafers are ideal for microLED production.
“MicroLED is a very promising technology which requires a new approach in many aspects, including sapphire wafer surface preparation. Our UC-wafers with a very low particle count will allow our customers to achieve their target epitaxial yields, which is crucial for microLED successful development and further commercialization,” Monocrystal’s CEO Oleg Kachalov commented.
“Our new UC-wafers are also compatible with the conventional PSS process. It is an advanced cost saving solution, which eliminates the pre-cleaning step and allows PSS-makers to increase their yields up to 95-99% after the first pass. We have already received very positive feedback on the UC-wafers from several long-term customers. We are encouraged to further develop our sapphire processing and cleaning technologies to assist our customers in achieving competitive advantages on the market,” added Monocrystal’s VP Sales Mikhail Berest.