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High-Purity Silicon Oxide for Thin-Film and Semiconductor Applications
Cell Lab 4N (99.99%) Silicon Monoxide (SiO) Pieces are refined evaporation-grade materials designed for thin-film deposition, semiconductor fabrication, and advanced optical coatings.
Silicon monoxide is a suboxide compound where silicon exists in the +2 oxidation state. It occurs naturally as a diatomic vapour molecule in high-temperature environments, and has been identified in stellar and interstellar formations — making it the most common oxide of silicon in the universe.
In laboratory and industrial settings, SiO serves as a versatile dielectric and coating material. It is widely used as a surface passivation layer, insulating layer in integrated circuits, dielectric in capacitors, and anode material in lithium-ion batteries.
Ultra-High Purity (99.99%) – Ensures superior performance in optical and electronic applications.
Excellent Thermal Stability – Suitable for high-temperature evaporation and deposition environments.
Versatile Functional Roles – Used in dielectric coatings, Li-ion anode layers, and optical films.
High Uniformity and Consistency – Ideal for precision thin-film applications requiring reproducible results.
Customisable Dimensions – Available in multiple piece sizes and purities upon request.
| Parameter | Specification |
|---|---|
| Name | Silicon (II) Oxide |
| Chemical Formula | SiO |
| CAS Number | 10097-28-6 |
| Molecular Weight | 44.08 g/mol |
| Appearance | Brown / Black Glassy Solid |
| Purity | 99.99% (4N) |
| Melting Point | >1,702 °C |
| Theoretical Density | 2.13 g/cm³ |
| Z Ratio | 0.87 |
| E-Beam Compatibility | Fair |
| Thermal Evaporation Techniques |
Boat: Ta Coil: W Basket: W Crucible: Ta |
| E-Beam Crucible Liner Material | Graphite, Tungsten, Tantalum |
| Temperature for Given Vapour Pressure (Torr) | 10⁻⁴: 850 °C |
Semiconductor Manufacturing – Dielectric layer and thin-film passivation coating.
Optoelectronics – Used in reflective and antireflective coatings for lenses and sensors.
Battery Research – Applied as a high-capacity anode material in Li-ion batteries.
Integrated Circuits – Serves as an insulating or barrier layer in IC fabrication.
Vacuum Deposition Systems – Ideal for thermal and E-beam evaporation processes.
Q1: What is the main advantage of SiO over SiO₂ in thin-film applications?
SiO provides better adhesion and lower stress films than SiO₂, making it suitable for multilayer coatings in optical and electronic devices.
Q2: Is Silicon Monoxide compatible with electron beam evaporation?
Yes, though rated as “fair”, it performs well under controlled vacuum conditions with tantalum or tungsten liners to prevent contamination.
Q3: Can I request custom purity or particle size?
Absolutely. Cell Lab provides custom purities up to 5N and size ranges from 1 mm to 10 mm upon request.
Q4: Is this product safe to handle in ambient air?
It is generally stable, but for best preservation of purity, store in a sealed, dry environment.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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