Market Conditions on Sapphire Wafers
- Details
- Category: Molybdenum & Sapphire Growth Furnace News
- Published on 19 February 2014
- Written by Cloudy
- Hits: 258
At this point, we’ve seen how switching to large diameter wafers can create more chips per MOCVD run and 
improve yield in several areas. Yet the industry this year is still predicted to produce over 80% of the LED capacity using small-diameter substrates. Why? The reasons come from two factors: difficult market conditions and technological challenges in supplying large diameter substrates at a competitive cost.
The price of 2-, 3-, and 4-in sapphire wafers has dropped dramatically in the past two years due to an oversupply condition and lower-than-expected demand. At the same time, a step in the manufacturing process called PSS (patterned sapphire substrate) has increased the performance of LEDs. These two factors made staying with small diameter an attractive option while waiting for higher demand. However, some large companies moved ahead despite these conditions and are today prepared for a rapid increase in production as demand grows.
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