A looming shortage of neon gas threatens to create problems for
manufacturers of semiconductors and the devices they power beginning in
2017.
Producers of the latest computer and cell phone chips use a
laser-enabled photolithography technique to create transistors and other
device features. Deep ultraviolet lasers, which contain neon gas as a
buffer, have made it possible to pack an increasing number of
transistors on chips that now boast features as small as 14 nm wide.
Semiconductor makers had hoped to transition by this year to extreme ultraviolet lasers,
which enable even smaller features but don’t require the noble gas. But
delays in that technology mean the industry will continue to rely on
neon-consuming lasers, “pushing up demand for neon beyond what the
supply chain can support” by 2017, says Lita Shon-Roy, CEO of Techcet, a
consulting firm that issued a report on the problem.
Chip makers, which account for more than 90% of global neon
consumption, are already experiencing high prices and some shortages
stemming from the Russian conflict with Ukraine, Shon-Roy says. The war,
which started in 2014, interrupted global supplies of the gas, about
70% of which comes from Iceblick, a firm based in the Ukrainian city of
Odessa.
Iceblick gathers and purifies neon from large cryogenic air
separation units that supply oxygen and nitrogen to steelmakers. Most of
the air separation units equipped to capture neon, which makes up only
18.2 ppm of the atmosphere by volume, are in Eastern Europe.
James Greer, president of PVD Products, a provider of pulsed laser
deposition systems for academic research, says he expects the shortage
to get worse. Greer’s customers are among the smaller users who also
depend on neon.
The cost of a cylinder containing a mix of neon and other gases used
in such systems has increased in the past two years from $1,200 to as
much as $12,000, Greer says. Wait times for delivery have gone from four
weeks to eight months.
Others who are likely to feel the effect of a neon shortage are
ophthalmologists, who employ lasers for LASIK vision correction surgery;
makers of superconducting wire; and manufacturers of neon lighting.
http://cen.acs.org/articles/94/i10/Trouble-brews-chip-makers-neon.html
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