Not Available

Period of Performance: 01/01/2001 - 12/31/2001

$100K

Phase 1 SBIR

Recipient Firm

Silicon Wafer Technologies, Inc.
240 King Blvd.
Newark, NJ 07102
Principal Investigator
Firm POC

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.