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Czochralski method for crystal growth

Czochralski method for crystal growth

Question: What is crystal growth? Explain the Czochralski method for crystal growth?   Solution Crystal growth Crystal growth is the process where a preexisting crystal becomes larger as more growth units (e.g. molecules, ions) add in their positions in the crystal lattice or a solution is developed into a crystal …

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Difference between Wet and Dry Etching

Difference between Wet and Dry Etching

Question: What is Etching? Write down the Difference between Wet and Dry Etching?   Solution: Etching: Etching is a process that selectively removes unmasked portions of a layer. Simply etching is used to remove material from the wafer. Difference between Wet and Dry Etching Wet Etching Dry Etching Method Chemical …

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Effects of O2 and H2 addition on etching rate

Effects of O2 and H2 addition on etching rate

Effects of O2 and H2 addition on etching rate   Question: How does the addition of O2 and H2effects in etching rate of  SiO2  Solution: Effects of O2 addition: The addition of O2 to the plasma leads to the formation of COF2, CO, and CO2, which decreases the concentration of …

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Explain Chemical Vapor Deposition(CVD)

Explain Chemical Vapor Deposition(CVD) or Vapor phase epitaxy(VPE)

Explain Chemical Vapor Deposition(CVD)   Question: Explain Chemical Vapor Deposition(CVD) or Vapor phase epitaxy(VPE)?   Solution: CVD is used for the deposition of layers that may be polycrystalline or amorphous and VPE is used for the deposition of single-crystal epitaxial layer. VPE is a particularly important source of semiconductor material …

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Advantages and disadvantages of epitaxy

Advantages and disadvantages of epitaxy

Advantages and disadvantages of epitaxy   Question: Write down the Advantages and disadvantages of epitaxy? or Question: Why all interest in epitaxy/significance of epitaxy? Solution: Advantages of Epitaxy- Epitaxial growth is a standard processing technology in silicon device fabrication. Advanced epitaxial growth methods permit the fabrication of extraordinarily advanced electronic …

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What is epitaxial growth and epitaxy ?

what is epitaxial growth

What is epitaxial growth and epitaxy?   Epitaxy is the ordered growth of a monocrystalline layer that bears a definite relation to the underlying monocrystalline substrate. A process of depositing a thin layer (0.5 to 20 pm) of single-crystal material over a single crystal substrate, usually through chemical vapor deposition …

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