Silicon Wafers Used To Fabricate Microelectronics
A faculty associate and manager of a Microelectronics Clean Room Requested the following quote:
Do you have any 100mm or 150mm epi wafers with p-type
silicon on n-type substrate (100 or 111)?
They will be used in microelectronics and integrated circuit fabrication. We need wafers with excellent electrical properties for CMOS technology development. Can you suggest all specs that would work?
Reference #90280 for specs and pricing.
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What Substrates Are Used For Microelectronics?
Substrates used in microelectronics serve as the foundation upon which devices and circuits are built. The most common substrates include:
-
Silicon (Si):
- The most widely used substrate due to its excellent electrical properties and abundance.
- Used for making integrated circuits (ICs), transistors, and other semiconductor devices.
- Gallium Arsenide (GaAs):
- Used for high-speed and high-frequency devices.
- Common in applications like RF (radio frequency) and microwave electronics.
- Silicon Carbide (SiC):
- Known for its high thermal conductivity and resistance to high voltages.
- Often used in power electronics and high-temperature applications.
- Sapphire (Al2O3):
- An insulating substrate used for making LEDs and RF devices.
- Provides excellent thermal stability and is transparent to visible light.
- Germanium (Ge):
- Used in high-speed electronics and photodetectors.
- Often combined with silicon in the form of silicon-germanium (SiGe) alloys.
- Indium Phosphide (InP):
- Suitable for high-speed and high-frequency applications.
- Commonly used in optoelectronics and communication devices.
- Glass:
- Used for display technologies and some types of sensors.
- Provides good insulation and can be made very thin and flexible.
- Quartz (SiO2):
- Used in frequency control applications such as oscillators and filters.
- Offers excellent stability and low thermal expansion.
- Polymer Substrates:
- Flexible substrates used in flexible electronics and wearable devices.
- Common materials include polyimide (PI) and polyethylene terephthalate (PET).
- SOI (Silicon on Insulator):
- A silicon substrate with an insulating layer, used for reducing parasitic device capacitance, improving performance, and reducing power consumption.
Each substrate material offers unique properties that make it suitable for specific applications in microelectronics.
