SBIR/STTR Research Award

Not Available

Award identifier 5d3e73c8f697308f8bf8837d0a826d25a80aae1e3ac72d3e193c17a56b701dbdAwarding agency National Science Foundation

Award amount

$100,000

Program and phase

SBIR · Phase I

Award year

2001

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Award details

Awarding agency
National Science Foundation
Branch
Not reported
Recipient company
Silicon Wafer Technologies, Inc.
Proposal award date
Not reported
Contract end date
Not reported
UEI
Not reported
Solicitation number
Not reported
Topic code
Not reported

Research abstract

This Small Business Innovation Research (SBIR) Phase I project will explore an improved process of manufacturing Silicon-on-Insulator (SOI) wafers. The SOI process includes: (1) forming a hydrogen-rich buried layer in a donor silicon wafer; (2) prebonding the donor wafer to a handle wafer; (3) cleaving the donor wafer along the buried layer to thinner top silicon; and (4) postbonding and surface smoothing of the final SOI wafer. An initial wafer is oxidized allowing it to get the buried oxide of SOI. A new feature is an improved activation of wafer surfaces to be bonded. Activation is termination of surfaces with either hydrogen or with hydroxyl groups. Preliminary results show that the terminated surfaces contain more than a monolayer of hydrogen. And the excessive adsorbed hydrogen causes transfer faults during subsequent layer transfer. The Phase I activation process allows control of the hydrogen dose. The process uses radio frequency plasma treatment instead of wet processing. It is expected that the yield of the SOI process will be increased. The new process will be used in the silicon wafer market, which currently totals $10B annually. Estimates indicate that SOI wafers will increase to around 20% of this market within 10 years as SOI is one of the few solutions for production wafers based on less than 0.18 micron design rules.

Technology keywords

Not reported

Agency intelligence

National Science Foundation

Back to SBIR/STTR Research Awards

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