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Monocrystal develops wafers for microLEDs

New Ultra-Clean sapphire wafers achieve breakthrough in surface quality

Synthetic sapphire firm Monocrystal has released a new range of 'Ultra-Clean' sapphire wafers, which it says achieve a breakthrough in wafer surface quality required by high-precision optoelectronic applications such as microLEDs.

A microLED is the next generation light source, that has advantages over a conventional LED in terms of brightness and power consumption.

Monocrystal's Ultra-Clean (UC) sapphire wafers have only 20-50 particles of no more than 1 micron in size on their surface; they are specially designed 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 commercialisation," 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 percent after the first pass. We have already received a 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.

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