Molybdenum News Center

LED Market Lightens up Sapphire Wafer Prospects

Sapphire substrates are ideal for epitaxial deposition of GaN and other III-V and II-VI thin-films for use in the manufacture of bright blue and green LED's. C-axis oriented wafers are available in the sizes shown below. One side is highly polished to 1 nm or less and the second side is either fine ground or optically polished. The parts are available in lots of 10 or 25 in cassettes packaged in Class-100 clean room under nitrogen and are EPI ready.

The sapphire wafer market has undergone a downturn in recent quarters, but future prospects are looking bright based on LED lighting growth. One of the top global sapphire suppliers, Rubicon Technology Inc., based in Illinois, which makes crystalline sapphire substrates and products for the LED, RF-IC, semiconductor and optical industries, reported Q3 revenue of $10.6M on Monday, down 38 percent on $17M year-on-year, but up 28 percent versus $8.3M last quarter. Rubicon announced that the short-term rise in revenue was due to 2- and 4-inch core products increasing from $1M to $6M. However, this rise was partly offset by revenue for 6-inch sapphire wafers falling about 50 percent from $6.1M in Q1 to $3.2M, mainly due to a temporary slowdown in the 6-inch sapphire-on-silicon (SoS) market associated with high inventory levels for RF products in various communications and mobile device applications. The overall revenue growth compared to earlier this year was elevated by the improving LED general lighting market. Furthermore, the slowdown in 6-inch sapphire wafer is stagnating across-the-board factory utilization rates for its various services, contributing to overall revenue losses. On the bright side, a recent market research report has indicated this trend will be reversed.


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