Deciding Miller Index when building a transistor?

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Discussion Overview

The discussion revolves around the considerations for selecting wafers with specific Miller indices when building a transistor, particularly focusing on the interaction between different types of wafers and their lattice structures. The scope includes technical explanations and conceptual clarifications related to semiconductor fabrication.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants propose that using wafers with the same Miller indices may be important for ensuring compatibility in lattice structure and properties.
  • Others question the concept of "interaction" between wafers and seek clarification on how multiple wafers would be utilized in a single transistor.
  • One participant suggests a method for constructing a transistor by attaching n-type wafers to a p-type wafer, raising questions about how lattice structure might affect the resulting properties.
  • Another participant emphasizes that mechanically attaching wafers does not constitute the creation of a transistor, highlighting the complexity of the process.
  • There is skepticism regarding the proposed method of forming an NPN junction and subsequent steps, with a request for examples of successful implementations.
  • A later reply introduces the idea of a "transistorized relay" as a potential analogy or related concept.

Areas of Agreement / Disagreement

Participants express differing views on the relevance of Miller indices and lattice structures in the construction of transistors, with no consensus reached on the proposed methods or their effectiveness.

Contextual Notes

There are unresolved questions regarding the definitions of "interaction" between wafers and the specific processes involved in constructing a functional transistor from multiple wafers. The discussion also reflects varying levels of understanding about semiconductor fabrication techniques.

Who May Find This Useful

Individuals interested in semiconductor physics, materials science, and transistor design may find this discussion relevant.

radaballer
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In obtaining the materials to build a transistor, should one choose wafers of the same Miller indexes? Will the lattice structure affect the interaction between two wafers?
 
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What do you mean with interaction between two wafers? (How) do you want to use multiple wafers for a single transistor?

Different lattice structures will (in general) lead to different transistor properties.
 
mfb said:
What do you mean with interaction between two wafers? (How) do you want to use multiple wafers for a single transistor?

Different lattice structures will (in general) lead to different transistor properties.

The plan is to attach n-type wafers on the ends of a p-type. How would you go about doing this? How will the lattice structure effect the properties?
 
Are we talking about the same thing? Those wafers can have billions of transistors on them, but putting them mechanically together does not give a transistor.
 
mfb said:
Are we talking about the same thing? Those wafers can have billions of transistors on them, but putting them mechanically together does not give a transistor.
I would cut 2 small squares from the n-type wafer and one from the p-type, I would then attach them to form an NPN junction, after that I would place the apparatus in a kiln to form an oxide layer on the lattice, then etch out sections for the source and drain. It would look something like this.
 

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I would be surprised if that works. Who came up with that idea and are there working examples?
 
Maybe its like a transistorized relay?
 

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