Let's talk about the importance of silicon nitride (SiNx) in chips si3n4 bearing

If you are looking for high-quality products, please feel free to contact us and send an inquiry, email: brad@ihpa.net

Why does silicon nitride play an important function in chips? Examine the advantages of silicon nitride compared to various other materials.

In chip production, there is a product that plays a crucial role, that is silicon nitride (SiNx). Although it might not get the same interest as other more well-known semiconductor materials such as silicon (Si), gallium arsenide (GaAs) or gallium nitride (GaN), its significance is unquestionable. A lot of chips will certainly utilize this product.

1. Why is it SiNx?

Mindful pals have discovered that I used SiNx when writing the chemical formula of silicon nitride. Buddies who have examined senior high school chemistry should recognize that N is the 5th main group element. Logically, the valence ought to be -3, while the chemical valence of silicon is +4. The chemical formula of silicon nitride need to be Si3N4. Exactly how can it be SiNx?

First, let's speak about the multivalent state of nitrogen: nitrogen has numerous valence states, primarily due to the fact that it has 5 valence electrons, and nitrogen atoms can share these electrons in different methods. Nitrogen can create different valence states, which mainly rely on the number of electrons it shares with various other components.

For nitrogen, its most stable valence state is -3, such as in ammonia (NH3) and gallium nitride (GaN). However, nitrogen can additionally form a favorable valence state by shedding electrons, such as the +5 valence state in nitric acid (HNO3). In addition, nitrogen can likewise develop a valence state in between -3 and +5, such as the +3 valence state in nitrous acid (HNO2) or the +1 and +2 valence states in some natural substances.

Secondly, let's speak about silicon nitride:

In the semiconductor industry, silicon nitride utilized in numerous applications is typically non-uniform, typically stood for by SiNx. SiNx is an amorphous material whose residential or commercial properties depend on the ratio of nitrogen to silicon, that is, the worth of x. When the worth of x changes, the physical and chemical homes of silicon nitride will certainly likewise transform. Silicon nitride does can be found in many kinds, including Si3N4, Si2N2, TRANSGRESSION, and so on

Si3N4 is a crystalline product, which suggests that its silicon and nitrogen ratio is repaired. When the value of x is equal to 4/3, SiNx amounts to Si3N4. However, in functional applications, SiNx is frequently non-uniform, and its silicon and nitrogen ratio can be regulated by transforming the parameters of the PVD or CVD procedure.

2. What is the role of SiNx in chip production?

Silicon nitride has superb insulation residential or commercial properties, and its resistivity can be as high as 10 ^ 14 Ω · centimeters, far going beyond some typical insulating products such as silicon oxide (SiO2). Its reduced dielectric consistent makes it an excellent isolation layer in microwave and RF applications. The silicon nitride layer likewise contributes in blocking the diffusion of impurities in the chip. It can avoid dopants such as boron and phosphorus from changing tool attributes with diffusion. On top of that, it can also avoid the diffusion of steel ions to stop mistakes such as brief circuits.

The exceptional thermal stability of silicon nitride is determined by its special chemical homes and crystal framework. It can remain stable in a high-temperature environment without chemical decomposition or physical form adjustments like various other materials. That's because in the crystal structure of silicon nitride, each silicon atom is incorporated with 4 nitrogen atoms in the kind of a tetrahedron, and each nitrogen atom is also combined with 4 silicon atoms in the form of a tetrahedron. This structure makes the crystal lattice of silicon nitride incredibly secure and hard to warp. Therefore, it is utilized as a gate-insulating layer when manufacturing high electron flexibility transistors (HEMTs).

3. What are the benefits of SiNx over SiO2?

Better thermal stability, harder solidity, and harder to engrave.

Supplier of Silicon Nitride Powder

TRUNNANO is a supplier of 3D Printing Materials with over 12 years experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you want to know more about si3n4 bearing, please feel free to contact us and send an inquiry.

Inquiry us