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GT Advanced Technologies announced a case study demonstrating that GTASF pink sapphire can be used to produce LED wafers with the highest transmission speeds. Independent analysis concluded that the small amount of color found in the wafer is not related to the color of the GT Advanced Sapphire furnace growth material.
GTA dvanced Technologies Inc. (Nasdaq: GTAT) announced on December 13 a case study detailing a series of blind material research findings that evaluated the impact of sapphire color on LED manufacturing processes. . Studies have shown that all sapphires appear colored at the core regardless of their source. The pink color of the GT Advanced Sapphire Furnace (ASF) material does not indicate that the precious stones contain impurities, and the pink ASF sapphire has no adverse effect on the LED manufacturing process, and no other steps are required. Or spend more to remove pink. In addition, studies have shown that GTASF pink sapphire material can be used to produce LED wafers with the lowest absorption rate and highest transmission speed among the tested samples.
All studies were conducted using blind samples of the GTASF sapphire material and LED-grade sapphire from other sources. The results of the case study were derived from independent glow discharge mass spectrometry (GDMS) analysis and high-brightness (HB) LED device manufacturing studies. High-brightness (HB) LED device manufacturing research was performed using a photothermal co-optical path interferometer (PCI) analysis. get on.
Cheryl Diuguid, Vice President and General Manager, Sapphire Materials and Equipment Division, said: “GT has provided sapphire to the LED industry for more than 12 years. These studies further validated the positive feedback we’ve heard from material customers for a long time – ASF Sapphire Growth Materials have Excellent quality and performance, although it is a little pink, the findings of recent case studies confirm what we have long learned: GT's ASF tool produces the best quality sapphire material and it shows up to LED manufacturers. The most important features, including serious defects with little or no bubbles, performance of critical LED wafer parameters such as surface roughness (Ra), total thickness variation (TTV), bow and arc, and ultimately high wafer yield good."
This new study is part of a broader material characterization project initiated by GT to investigate the impact of sapphire material properties on the entire manufacturing process of high-brightness LED value chains. The company has announced the findings of this color case study at the Senior Industry LED Conference held in Shenzhen, China from December 9th to 10th. The company also publishes a FAQ document on the importance of evaluating the quality of sapphire materials.
About GTAdvancedTechnologiesInc.
GT Advanced Technologies, Inc. is a leading global supplier of polysilicon production technology, sapphire and silicon crystal growth systems and related materials for solar, LED and other specialty markets. The company's products and services help customers optimize the manufacturing environment and reduce the cost of ownership.
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