What Are the Key Benefits and Structure of Silicon On Insulator (SOI)?

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SUMMARY

Silicon On Insulator (SOI) technology utilizes a three-layer structure consisting of a handle layer, a buried oxide layer (SiO2), and a device layer of silicon. This configuration enhances the control over the fabrication process, making it preferable for applications such as transistors and micromachines. SOI wafers are approximately three times more expensive than traditional silicon wafers, but they offer significant benefits in terms of performance and scalability. The discussion also touches on the implications of tunneling effects as device dimensions decrease.

PREREQUISITES
  • Understanding of semiconductor physics
  • Familiarity with silicon wafer fabrication processes
  • Knowledge of oxide materials, specifically silicon dioxide (SiO2)
  • Awareness of microelectromechanical systems (MEMS)
NEXT STEPS
  • Research the properties and applications of silicon-on-insulator technology
  • Explore the effects of tunneling in nanoscale devices
  • Learn about the fabrication techniques for SOI wafers
  • Investigate the cost-benefit analysis of SOI versus traditional silicon wafers
USEFUL FOR

Engineers, semiconductor researchers, and professionals involved in microelectronics and MEMS design will benefit from this discussion on Silicon On Insulator technology.

Goalie_Ca
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Does anyone have any information about SOI. I've heard lots about it yet all i know of it, other than its benefits, is that instead of a metal on the oxide it uses a silicone. What is this silicone's structure, etc. Just some basic information about it would be great.
 
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I assume you mean silicon oxide insulation?

- Warren
 
I believe it stands for silicon on insulator. Perhaps that's just the marketing name for it.

Just as an aside, how would tunneling affect the insulation properties as we get smaller. What type of scale would this effect start kicking in at?
 
SOI means silicon-on-insulator,it's a sandwich structure with three layers,i.e. bottom-up:handle layer/buried oxide layer(SiO2)/device layer

For more details about SOI ，please visit http://www.yole.fr/pagesAn/products/soi.asp

If you want to know about SOI wafer clearly , please search photos with key words 'SOI mems' at google.com.
 
Last edited by a moderator:
SOI mean silicon on oxide. That is three later on top of each other. (Si)-(SiO2)-(Si)
We use silicon to build transistor, micromachines, etc.
So here, why not using a bare silicon, and use a SOI? What's the difference?
The difference is you can control the fabrication process by utilizing the insulator (oxide) layer.
And it is I think 3 times more expensive than the Si wafer.
Hope that helped,.
 

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