Skip to content 
Recently, Jiangsu Chaoxinxing Semiconductor Co., LTD. (hereinafter referred to as “Chaoxinxing”), an enterprise in the new district, has released a major piece of news: It has launched a revolutionary new product – 8mΩ·cm (milliohm ·cm) low-resistance silicon carbide substrate, which features “zero TSD defects” and “extremely low BPD density”, reaching world-class standards and is expected to further reshape the performance boundaries in the power device field.
Many professional terms are hard for people to understand, but in fact, the information and “value” behind them are quite significant. Today, let’s transform these obscure terms into plain language and take everyone to get to know this powerful technology company together.
01
Chaoxinxing is a high-tech enterprise dedicated to the research and development and industrialization of large-sized silicon carbide single crystal substrates. What they are doing can be broadly understood as a super supplier that specializes in creating top-notch “foundations” for the new energy industry such as electric vehicles, as well as important defense and civilian “new infrastructure” fields like aerospace, rail transit, and smart grids.
The scientific name of this “foundation” is silicon carbide substrate. Almost all efficient power chips need to be built on this “foundation”. One of the indicators to measure whether the electrical conductivity of this “foundation” is good or not is resistance.
The smaller the number of the resistance, the lower the resistance the current encounters, and thus the better the conductivity. It’s just like riding a bike on a road without stones or water stains. It’s naturally smoother to ride than on a muddy road.
Public data shows that currently in the industry, the resistivity of the conductive silicon carbide substrates produced by the main flow is mostly concentrated in the range of 15 to 30mΩ·cm, which can basically meet the demands of most electric vehicles, industrial control and other fields in the market. There are also some leading enterprises with advanced technologies that can control the resistivity of their mass-produced products at around 15mΩ·cm.
The low-resistance silicon carbide substrate released by SuperStar has a resistivity as low as 8mΩ·cm, reaching the first-class level worldwide.
02
Why is it so difficult to reduce resistance?
Because reducing resistivity does not rely on a single technology, but requires an extremely profound understanding and technological breakthroughs in aspects such as crystal growth, purity control, and defect suppression.
All of these are in the planning blueprint of Chaoxinxing.
For instance, in terms of crystal growth, Chaoxinxing has independently developed a unique technical route by virtue of its innovative process design and methods. In terms of purity control and defect suppression, a number of key technical difficulties have been successively overcome.
Therefore, the newly released product not only has low resistance, but also enjoys the advantages of “zero TSD defect” and “extremely low BPD density”
TSD is a fatal defect in the crystal structure, just like a “big crack” or “big cavity” in the foundation of a building. For instance, making chips is like building a tall building on the foundation. If there are cracks in the foundation, the building might collapse halfway through. “Zero TSD” means that the “foundation” of SuperChip is approaching perfection, being flat and solid, ensuring the success rate and quality of subsequent chip manufacturing.
BPD is another more subtle defect, which can be regarded as some tiny “sand holes” or “hidden injuries” in the foundation. Although the “building” didn’t collapse, these “hidden injuries” can also affect its lifespan and sturdiness. Superstar has kept the number of such “hidden flaws” at an extremely low level, thus ensuring that the chips made of their materials will be very durable and have an extremely long lifespan.
Therefore, Chaoxinxing is not only a well-rounded “Three Good Student”, but more importantly, it is also a “class representative” who is proficient in every subject.
0
3
There is one last question. What tangible benefits can such a powerful “foundation” bring to downstream customers like electric vehicle manufacturers?
01
More energy-efficient and longer-lasting
Because the resistance to current transmission in the chip is reduced, less energy is lost, and more electricity is used to drive the vehicle.
02
More durable and safer
Due to its low resistance and low loss, the heat generated by the chip during operation is greatly reduced, which can lower the risk of failure caused by overheating.
03
Faster charging and quicker response
Silicon carbide material itself has a fast switching speed. The high-quality “foundation” of SuperStar enables this advantage to be fully exploited – during charging, the electronic control system efficiently “strikes”, shortening the charging time. When driving, stepping on the accelerator makes the power response more direct and rapid.
04
Lower overall cost and greater potential
Although this top-notch “foundation” itself may not be cheap, it can help customers produce products with stronger performance. For instance, car manufacturers can use it to create models with longer ranges and faster charging, or simplify the cooling system, saving space and weight to optimize the layout, and so on.
In the future, as the company further develops comprehensively, it will drive the entire power device industry towards a path of higher efficiency and lower energy consumption.
After all, Chaoxinxing is engaged in the most fundamental and core basic materials. Ultimately, whoever uses their materials will be able to produce new energy vehicles, charging piles, photovoltaic inverters and other products that are more powerful, efficient and reliable.
