Silicon Ingot for Fabricating Wafers 

High-quality silicon ingots are the foundation of precision silicon wafer fabrication used in semiconductors, MEMS, photonics, and solar applications. At UniversityWafer, we supply Czochralski (CZ) and Float Zone (FZ) silicon ingots in a range of diameters, resistivities, and orientations including <100> and <111>. Whether you need undoped, low doped, or highly doped silicon, our ingots are optimized for slicing into high-performance wafers with excellent crystal quality and uniformity. Request a quote today for fast delivery and custom specifications.

UW Logo

Request a Quote for Silicon Ingots & Wafers

Looking for custom silicon ingots or specific wafer specifications? We supply CZ and FZ silicon in a wide range of diameters, resistivities, and orientations — with fast turnaround and small quantities available.

Get Your Quote FAST! Or, Buy Online and Start Researching Today!





Recent Silicon Wafer FAQs



What is surface flatness of silicon wafer?

We have Ultra-Flat Silicon with the following spec

Prime Silicon Wafers 100mm P-type /Boron doped <1-0-0> 490-510 micron 0.005-.020 ohm-cm Semi Std Double Side Polished Total Thickness Variation (TTV)<1 um. These are great for making SOI or MEMS!

What is the roughness value (rms) silicon wafer?

The majority of our Prime Grade wafers have a roughness value Ra<5Å.

What is the definition of silicon wafers?

A Si wafer, or substrate, or silicon is grown in a tube from a seed into a long ingot that is then sliced into various thicknesses used in electronics for the fabrication of integrated circuits and in photovoltaics. The wafer serves as the substrate for microelectronic devices built in and over the wafer and undergoes many microfabrication process steps such as doping or ion implantation, etching, deposition of various materials, and photolithographic patterning. Finally the individual microcircuits are separated (dicing) and packaged.

Do you sell platinised silicon wafers?

Yes! We sell Platinised and thin films of almost all the metals! Just let us know the specs and quantity for an immediate quote!

Do you sell one silicon wafer? If so, how?

Yes! We sell as few as one Silicon wafer. We sell in individual wafer carrier.

How do you clean Si 100 wafer before silicon dioxide is formed for bump production?

The RCA clean is a standard set of wafer cleaning steps which need to be performed before high-temperature processing steps (oxidation, diffusion, CVD) of silicon wafers in semiconductor manufacturing.

Werner Kern developed the basic procedure in 1965 while working for RCA, the Radio Corporation of America. It involves the following chemical processes performed in sequence: Removal of the organic contaminants (organic clean + particle clean), removal of thin oxide layer (oxide strip, optional), and removal of ionic contamination (ionic clean).

Can you resize silicon wafers from 200mm to 100mm?

Yes! We can laser down the wafer so you could get two 100mm from one 200mm wafers including flats!

What is silicon wafer reclaim?

It's when you have a wafer that has thin films or oxide etc on them and we strip and clean them so the wafers can be reused. Often companies that want to save money or protect their intellectual property will reclaim their wafers.

Which keyword did you use to find us? Tell us and you'll receive a discount on your order!

silicon price si wafer vendor silicon prices silicon producer wafer production silicon producers mono silicon si wafer polishing silicon wafer si wafer bonding silicon wafers definition silicon wafer manufacturers si wafer price silicon wafers silicon wafer processing si wafer orientation si wafer flat silicon wafers price si wafer resistivity silicon wafers for solar cells si wafer cleaning silicon wafer suppliers si wafer thinning silicon wafer price silicon wafer orientation silicon wafers manufacturers 4 inch silicon wafer dimensions silicon wafer resistivity silicon wafers suppliers scrap silicon wafers 4 inch silicon wafer silicon wafers for sale silicon wafers wiki silicon producers china Si wafers Czochralski Process Semiconductor Wafers

  • Super Thin Silicon used for Solar Application with >45% efficiencies
  • Thick Silicon wafers used as substrates for depositing various films on them, like polymer membranes.
  • Intrinsic Silicon wafers that let circuits built on it act very fast. This is also why one uses SOI wafers.
  • Low resistivity Silicon wafers used by laboratories that use Epi growth reactors.
  • Standard substrates used for npn transistor circuits and optical applications.
  • Inexpensive Silicon wafers used to make ultra-pure and ultra-clean carriers that do not react with the organic sample to be analyzed.

Related Silicon Wafer Products

 

List of Silicon Ingots

All of the ingots below are CZ unless otherwise stated.

FZ 6"Ø×25mm n-type Si:P [100], (7,025–7,865) Ohm-cm, 1 SEMI Flat

We have a large selection of Prime, Test and Mechanical Grade Undoped, Low doped and Highly doped Silicon wafers from 1" to 12". Silicon wafers, both low doped and highly doped, are in stock and ready to ship. Examples of full and partial silicon wafer cassettes include:

Current special on MEMC Silicon Wafers 100mm, 150mm and 200mm! Please ask for inventory list!

Ingot item #E944 - FZ NTD 4"Ø×50mm n-type Si:P [100] (265–336) Ohm-cm, MCC Lifetime >200µs, 1 SEMI Flat, made by PHTS

Super thin Silicon 100mm P/B (100) 1–10 ohm-cm 25um. 2um thin Silicon also available!

Below is just one of the wafer specs that we have on sale:

  • 1" Undoped Silicon (100) >1,000 ohm-cm 250um DSP
  • 2" P/Boron (100) 1–10 ohm-cm 280um SSP
  • 3" N/Phosphorus (100) 0.01–0.02 ohm-cm 380um DSP
  • 4" Intrinsic Silicon (100) >20,000 ohm-cm 500um DSP
  • 6" P/B (111) <1 ohm-cm 300um SSP
  • 8" Intrinsic (100) >5,000 ohm-cm 750um SSP
  • 12" P/B (100) 10–20 ohm-cm DSP 850um

We have plenty of silicon wafers at a low price and small quantities of partial cassettes, so you can buy fewer than 25 wafers and as few as one Si wafer.

We carry a large selection of Silicon wafers with:

We can custom make wafers in small quantities. We can dice them and thin them down to 2um. We have undoped, low doped, and highly doped Silicon substrates that are always in stock.

Typical Client Question regarding silicon wafers:

After looking at your online store, I think we might go with your cheapest silicon wafers, product ID 444. I am in a group that is working on a Senior Design Project to create a biobattery. We need a substrate to pattern with photolithography and subsequently deposit various precious metals that will catalyze certain reactions and conduct electricity. If you have any advice on specific types of wafers we will need for such nano electronic devices, I would be happy to know. Thanks.

We make nanomaterials in our lab and one approach is using electrical explosion of wires (EEW). We used one of Scott's old Si wafers (doped with B) and broke off a strip of Si that we attached to electrodes in our EEW apparatus. It worked nicely and we are looking to do the same thing with Ge (Germanium Wafer). We need a wafer that is less than 500 microns thick. Fill out the form and receive an immediate quote. See bottom of page for recent Silicon Wafers specials.

How Silicon Ingots Are Used in Wafer Fabrication

The production of silicon wafers begins with a high-quality silicon ingot. These ingots are carefully sliced using precision wire saws into thin wafers of controlled thickness. After slicing, wafers undergo lapping, polishing, and cleaning processes to achieve the surface quality required for semiconductor manufacturing.

The uniformity and purity of the silicon ingot directly impact the electrical performance of the wafer. This is why applications such as MEMS devices, integrated circuits, and photovoltaics require tightly controlled crystal growth and dopant distribution.

High Purity Silicon for Advanced Applications

For advanced electronics and research, high-purity silicon ingots are essential. Float Zone (FZ) silicon is often used in applications requiring very high resistivity and low defect density, such as RF devices and power electronics.

Czochralski (CZ) silicon, on the other hand, is widely used for standard semiconductor production due to its availability in larger diameters and cost efficiency. Both materials can be customized to meet specific research or production requirements.

Custom Silicon Ingot Manufacturing

We specialize in providing custom silicon ingots tailored to your exact specifications. Whether you need a specific crystal orientation, resistivity range, or dopant type, our team can supply material optimized for your application.

Custom ingots can be produced for:

  • Prototype and research projects
  • University and laboratory use
  • Semiconductor process development
  • Specialized optical or electrical applications

From Ingot to Finished Silicon Wafer

After slicing, silicon wafers can be further processed into a variety of specialized products, including thermal oxide wafers, epitaxial wafers, and silicon-on-insulator (SOI) substrates. These additional processing steps enable the fabrication of complex microelectronic and photonic devices.

Because every application has different requirements, we offer flexible solutions ranging from raw ingots to fully processed wafers ready for device fabrication.