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Semiconductor Doping Process

07/25/2011 2:21 PM

I have read the theory of N-type and P-type semiconductors and how they are formed by doping, but I have never understood how the process actually happends in an actual factory/laboratory.

Consider this diagram of the atomic-structure representation of doping Antimony on Silicon. It tells me that there needs to be 1 Sb atom for 4 Si atoms for 1 free electron in every such group. How exactly is this amount correctly administered and how is the process actually done?

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Guru

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#1

Re: Semiconductor Doping Process

07/25/2011 2:31 PM

This is a good place to start:

Semiconductors and doping

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#3
In reply to #1

Re: Semiconductor Doping Process

07/31/2011 5:22 PM

Lyn did you read my first post properly? Stuff like this (your link) is what everyone learns of the doping process - my question was more concerned with the industrial procedures and actual processes involved in the doping. If your post was meant to tease/insult me, you are wasting your time as well as mine.

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#2

Re: Semiconductor Doping Process

07/25/2011 3:37 PM

Well it involves both a particle accelerator and vapour deposit crystal growth. Then there's the etching and mask process required to select where to make a transistor and how large to make that transistor.

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#4
In reply to #2

Re: Semiconductor Doping Process

07/31/2011 5:29 PM

Redfred

Yes, those are the type of processes I wanted to know more about. Do you have a link or a pdf explaining those in more detail? If you could share the info, I'd appreciate it. Thanks.

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#5
In reply to #4

Re: Semiconductor Doping Process

08/01/2011 12:01 AM

Actually this is either a four to six year collegiate multidisciplinary degree or just a recipe book from the manufacturer of the foundry on how to use their product to make chips. You have the added complication that this is still a rapidly evolving technology that requires only an elite group of individuals to really "understand" the process for new semiconductors to be fabricated. As such there is no book "semiconductor fabrication for dummies". Now there are many web sites that offer semiconductor fabrication tutorials. Many of these tutorials instruct how to use still functioning but obsolete equipment that can be easily found.

I do not make chips, myself. So I cannot validate or refute any information you will find on those web sites. I only use the chips.

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