The silicon wafers on our website are all 0.4mm thickness and are 1 side polished. We make silicon (Si) wafers in all common sizes up to 6" diameter. For other wafer sizes, specifications please send us your requirements here and we will send a formal quotation.
Undoped Silicon (Si) Crystal Substrate / Wafers:
Crystal substrates offers quality undoped silicon wafers for a variety of applications. Our wafers are produced with high grade silicon and provide excellent resistance and uniformity. Undoped wafers are ideal for a range of research and manufacturing applications, including solar cells, photovoltaics, integrated circuits, and semiconductor devices. Our undoped wafers are available in a variety of resistivities from 0.001 ohm-cm to 10 ohm-cm. Our undoped wafers provide the highest purity and reliability, making them perfect for use in high performance and sensitive applications.
N-type, Boron or Phosphorus doped Silicon wafers:
Crystal Substrates offers quality n-type doped silicon wafers. Our n-type doped wafers are produced using high grade silicon and are doped with common dopants such as arsenic, antimony, and phosphorus. Our n-type doped wafers provide excellent resistance and uniformity and are available in a variety of resistivities from 0.01 ohm-cm to 100 ohm-cm. These wafers offer the highest quality and reliability, making them perfect for use in high performance and sensitive applications.
P-type, Boron or Phosphorus doped Silicon (Si) wafers:
Crystal Substrates offers quality p-type doped silicon wafers. Our p-type doped wafers are produced using high grade silicon and are doped with common dopants such as boron, gallium, and indium. Our p-type doped wafers provide excellent resistance and uniformity and are available in a variety of resistivities from 0.01 ohm-cm to 100 ohm-cm. These wafers are perfect for a range of research and manufacturing applications, including solar cells, photovolcaics, integrated circuits, and semiconductor devices. Our p-type doped wafers offer the highest quality and reliability, making them ideal for use in high performance and sensitive applications.
Thermal Properties of silicon (Si) Crystal Substrate / Wafers:
The thermal properties of a 0.5 mm thick silicon wafer with a <001> orientation include high thermal conductivity, typically around 150 W/(m·K), which facilitates efficient heat dissipation, and a relatively low thermal expansion coefficient, approximately 2.6 × 10⁻⁶ /K, minimizing thermal stress during temperature fluctuations.
Our undoped, n-type doped, and p-type doped wafers provide the highest quality, reliability, and uniformity for a variety of research and manufacturing applications. No matter what your needs, our quality silicon wafers are perfect for your application.
If you have any questions please get in touch with us here.
Dr Joseph Franklin
| LINEAR FORMULA: | Si |
| PURITY: | 99.99% |
| CRYSTAL ORIENTATION: | (100), (111) |
| GROWTH METHOD: | Czochralski, Floating Zone |
| CRYSTAL STRUCTURE: | cubic |
| LATTICE CONSTANT: | a = 0.543095 |
| MELTING POINT (°C): | 1414 °C |
| THERMAL EXPANSION COEFFICIENT (/K): | 2.3 |
| HARDNESS: | 7 |
| MOLAR MASS (G/MOL): | 28.08 u |
| DENSITY (G/CM3): | 2330 kg/m3 |
| REFRACTIVE INDEX: | n = 3.9766 |
| DIELECTRIC CONSTANTS: | |
| CHEMICAL STABILITY: | |
| SIZES: | 5x5mm & 10x10 mm |
| TYPICAL THICKNESS: | 0.5mm |
| SIZE TOLERANCES: | +/- 0.1mm |
| THICKNESS TOLERANCES: | +/- 0.015mm |
| ORIENTATION PRECISION: | +/-0.5 degree |
| POLISHING OPTIONS: | SINGLE SIDED (1SP) OR BOTH SIDES POLISHED (2SP) |
| ROUGHNESS RA: | <0.5nm |
| SPECTRAL TRANSMISSION RANGE | 1.1 µm (1100 nm) |
| THERMAL CONDUCTIVITY | 46.06 @ 0 oC, 25.12 @ 100 oC, 12.56 @ 400 oC ( W/(m.K) ) |
| WATER ABSORPTION | 0% |
| FLEXURAL STRENGTH | 380Mpa |
| MAX. WORKING TEMPERATURE | 1200C |
How long does it take for you to ship out after purchase? In-Stock Substrates are held in our US warehouse and we aim to have substrates shipped out within 24-48 hours.
Pre-Order Substrates are manufactured and delivered in 3-4 weeks.
How much is shipping? All substrates are shipped free of charge within the USA. This shipping takes approx 4-5 days to arrive once shipped.
Expedited delivery? Faster delivery options are available. Below are some indicative prices. To get the cost for your package and location, just add your address at check out and select the shipping option you want to check.
- USA FedEx 2 day delivery: typically $25 USD
- USA FedEx Overnight Delivery: typically $65USD.
- Canada FedEx International Priority: typically $25 USD.
Europe and UK Delivery? Approx cost for delivery is 50 Euros. Shipping costs will be calculated at check-out based on your address or please complete the quote form and we will email you the price. VAT and customs charges are payable by the buyer.
Rest of Worldwide Shipping? Shipping costs to the rest of the World, will be calculated at check-out. Please be aware that delivery times and tracking information vary for each country. Customs charges may apply if shipping outside of the US and are payable by the buyer.
How can I place an order? The quickest way to get your item is to buy through the website – the order is automatically picked up in our system and in stock items ships out asap.
We can accept purchase orders for established universities and companies and are happy to work with your institutes payment systems if required (although please note we are a small company so would prefer pre-payment via our website for small or one-off orders).
We have flexible payment options and can give you a quotation in any of the following currencies (USD $, CAD $, GBP £, EUROS € AUD $).
You can download a copy of our W8 form here.
What payment options do you provide? Crystal Substrates accepts the following payment methods:
- Bank Transfer into USA bank account.
- Credit Card: Visa, MasterCard, Discover, American Express, JCB, Visa Electron.
- Crystal Substrates offers a Fast Checkout option, allowing you to securely save your credit card details so that you don't have to re-enter them for future substrate purchases.
- PayPal: Shop easily online without having to enter your credit card details on the website.Your account will be charged once the order is completed.
- Sorry we do not accept payment with check.
Do you send substrates to Europe? Yes, we have many long term customers buy from all over Europe including France, UK, Germany, Italy, Norway, Netherlands. Please buy through the website or get in touch if you need a specific substrate.
We believe we have the cheapest and best quality products in the USA. If you find another US company with a lesser price (including delivery) we would be happy to price match.
Selling to 1000+ research labs worldwide, including...
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We’re happy to answer any substrate questions. To help us out let us know your preferred orientation, quantity, polishing and size requirements.
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