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Silicon Substrate and Single Crystalline Si Wafers

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Silicon Substrate and Single Crystalline Si Wafers

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Questions and Answers

What is the process for creating single crystalline Si wafers?

Pouring molten silicon into a mold and rapidly cooling it

Seeding a molten silicon and slowly spinning and drawing it upwards while cooling (correct)

Heating silicon powder until it forms a single crystal structure

Using a high-pressure process to compress silicon into a crystalline structure

What is the most important direction/planes in silicon based on Miller indices?

(211) and (310) planes

(100) and (111) planes (correct)

(321) and (420) planes

(110) and (210) planes

What is the main purpose of p-n junctions in semiconductors?

To create a flow of majority carriers through the junction (correct)

To convert majority carriers into minority carriers

To block the flow of majority carriers through the junction

To increase the resistivity of the semiconductor

Which process is used to alter the electrical properties of semiconductors by introducing impurities?

Implantation Signup and view all the answers

What type of material is created through the process of bulk micromachining?

Polycrystalline material Signup and view all the answers

How are silicon wafers mainly used in semiconductor technology?

As substrates for integrated circuit fabrication Signup and view all the answers

In the Czochralski method, what is created using silicon wafers?

Monocrystalline silicon Signup and view all the answers

What do the Miller indices represent for cubic crystals?

A direction vector perpendicular to a plane Signup and view all the answers

Which planes are used to identify the crystalline orientation of the surface plane in a (100) wafer?

{1 0 0} and {1 1 0} Signup and view all the answers

What is an example of an important material with a non-cubic crystalline structure?

Quartz Signup and view all the answers

What does the Czochralski method create using silicon wafers?

Semiconductors Signup and view all the answers

What determines the orientation of Si wafers?

Temperature and light Signup and view all the answers

What is used to identify different directions and planes in a crystalline structure?

Indices [h k l] Signup and view all the answers

What are the Miller indices of the shaded planes shown in the figure below?

(2 4 1) Signup and view all the answers

What represents a family of equivalent directions in a crystalline structure?

(h k l) Signup and view all the answers

What eliminates infinities when finding the Miller indices?

<ul> <li>Taking the reciprocal of each quantity</li> </ul> Signup and view all the answers