Undoped Silicon Wafers Inventory
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There are three basic types of semiconductors- n-type, p-type, and undoped. Each type has its own unique benefits and drawbacks.
Up to 20,000 ohm-cm available!
UniversityWafer, Inc's Undoped Silicon Wafers are the most widely used type of semiconductor because they offer the best balance of performance and price. While a Doped Silicon Wafer is better for electronics, an Undoped Silicon one is better for medical devices. Buy as few as one wafer to test.
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Undoped Silicon Wafers In Stock
Below are just some of the undoped silicon wafers that we have for immediate delivery.
Buy as few as one wafer!
| ID | Diam | Dopant | Orien | Res (Ohm-cm) | Thick (um) | Polish |
| 2313 | 25.4mm | Undoped | <111> | >2000 | 280um | SSP |
| 2483 | 25.4mm | Undoped | <100> | >5000 | 73.5um | DSP |
| 2018 | 50.8mm | Undoped | <100> | >10000 | 280um | DSP |
| 3032 | 100mm | Undoped | <100> | 1000-3000 | 500um | SSP |
| 3193 | 100mm | Undoped | <100> | >10000 | 525um | DSP |
| 3328 | 100mm | Undoped | <100> | >20,000 | 525um | SSP |
| 3225 | 150mm | Undoped | <100> | >10,000 | 675um | DSP |
What Are Undoped Silicon Wafers Used For?
Among the three basic types of semiconductors, Undoped Silicon Wafers (SiW) are the most widely used. Although they are more expensive than their doped counterparts, they are still considered to be the best semiconductors. While a Doped Silicon Wafer is better for electronics, an Undoped Silicon one is better for medical devices. Find out which type is right for you. If you don't know, you can always ask for samples.
As their names suggest, doped silicon wafers are created by adding a dopant to silicon during the formation process. Boron, for example, creates a P-type material while other elements create a N-type material. Both types are ideal semiconductors, but their properties differ. Doping a semiconductor can make it more sensitive to electric currents, but it will also increase its cost.
Doped silicon wafers are fabricated by adding impurities to a pure silicon crystal. The addition of boron creates a P-type material, while other elements can create an N-type material. This is a good choice for semiconductors, because it produces the highest level of electrical conductivity. Unlike doped materials, an Undoped Silicon Wafer is perfect for manufacturing semiconductor devices.
A doped silicon wafer is created by introducing dopants to the silicon crystal during its formation. Doping is commonly done with boron or other elements to create an N-type material. The dopants in a P-type silicon wafer contribute to the semiconductor's ability to conduct electricity. An N-type silicon wafer, on the other hand, contains a negatively charged electron. These different types are classified as degenerate or intrinsic, depending on the concentration of dopants.
Why are Undoped Silicon Wafers Nominally N-type
semiconductor #doping #type
An intrinsic semiconductor, also called an undoped semiconductor or i - type semiconductor, is a pure semiconductor without any significant dopant species present. [0]
An extrinsic semiconductor is a semiconductor that has been doped, that is, into which a doping agent has been introduced, giving it different electrical properties than the intrinsic ( pure ) semiconductor. [0]
A semiconductor doped to such high levels that it acts more like a conductor than a semiconductor is referred to as a degenerate semiconductor. [7]
An n - type ( negative - type ) extrinsic silicon semiconductor is a semiconducting material that was produced by doping silicon with an n - type element of Group V A, such as P, As, or Sb. [0]
In semiconductor production, doping is the intentional introduction of impurities into an intrinsic semiconductor for the purpose of modulating its electrical, optical and structural properties. [7]
We can custom make wafers in small quantities. We can dice them, thin them to 2um. We have undoped, low doped and highly doped Silicon substrates that are always in stock.