SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : SOITEC, Silicon-On-Insulator TEChnologies
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: John Finley who wrote (45)11/26/2001 9:35:01 PM
From: kinkblot  Read Replies (1) of 83
 
I wouldn't say that SIMOX is ruled out.

Someone thinks otherwise: Ibis was up 45% today versus 17% for Soitec. However, Intel will need volume and Soitec is best positioned to provide volume.

Reducing the silicon thickness with SIMOX depends on controlling the implant profile, putting it at a shallower depth. That is also true with Smart-Cut since the hydrogen implant profile determines the location of the fracture plane and its uniformity. In the July 13th press release they said "the process allows targeting of thin films by reducing the implantation energy only." I don't see why isolation challenges for SIMOX, e.g. eliminating pinholes due to shadowing during implant, would be any worse for a thinner top layer.

Soitec claims that stress in the silicon film is minimized with their approach, but I too wonder how far they can go before they have problems with structural integrity in the transfer steps. They'll need to reduce thickness by a factor of three; meanwhile the trend to ever-larger diameter wafers continues.

SiGen is a copy-cat on the basic idea, imo, but nevertheless anyone can make improvements and as you go thinner their better uniformity with NanoCleave™ could be an advantage. They point out: no need for CMP as well as a better surface for epitaxy. And if the do need smoothing, #reply-14422258.

OK, has this absorbed enough time for $0 invested? <g>

WT
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News