New hydrogen purification technology developed
Article Abstract:
Johnson Matthey of Wayne, PA, and Air Products and Chemicals of Lehigh Valley, PA, have come up with a new palladium membrane diffusion technology to yield ultra-high purity hydrogen. The technology was developed to eliminate carbon monoxide, carbon dioxide and methane contamination in hydrogen. John Matthey and Air Products have filed a joint patent on the technology. Air Products will initially use the technology in major semiconductor manufacturing projects in the Pacific Rim. The new technology will be used in locations where commercially available hydrogen sources contain relatively high levels of contaminants.
Comment:
Has come up with a new palladium membrane diffusion technology with Air Products to yield ultra-high purity hydrogen
Publication Name: Semiconductor International
Subject: Electronics and electrical industries
ISSN: 0163-3767
Year: 1998
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Defect-free silicon crystal
Article Abstract:
MEMC Electronic Materials have come up with a new approach to defect management, leading to silicon crystal ingots that no longer suffer from in-grown agglomerated or clustered defects. The process stops the formation of two kinds of defects in crystal ingots used in IC manufacturing. The company has come ups with a new crystal growth process that works beyond controlling the rate of the defect creating reaction to integrating defect management across the whole growth process. At the moment, defect-free silicon crystals have been attained at diameters as big as 200 mm.
Comment:
Comes up w/ new approach to defect management, leading to silicon crystal ingots w/ no in-grown agglomerated or clustered defect
Publication Name: Semiconductor International
Subject: Electronics and electrical industries
ISSN: 0163-3767
Year: 1998
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