CSMH

Name: CSMH
Address: No. 253 Guankou Avenue, Jimei District, Xiamen City, Xiamen, 360000, CN
Telephone: +8613616001136

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CSMH Semi is a Wide Bandgap Semiconductor Material and Device Manufacturer.

13/01/2025

Diamond Application Solutions of EUV Lithography CO2 Optical window

13/01/2025

Diamond is characterized by extremely highhardness, high thermal conductivity andchemicalinertness.In addition, diamond iscomposed of carbon,alowZ(Z:atomicnumber)material, and is transparent toX-rays, which is essential for X-ray windows.
A CvD diamond window coated with a tungsten film is welded to a metal frame thatserves as an X-ray transmission target or high-power X-ray anode,and the tungstenlayer is irradiated (bombarded) with a high-en-ergy electron beam to create a single-pointX-ray source.

In this application, diamond plays two major roles: one, diamond takes advantage of its ul.tra-high thermal conductivity to rapidly conduct heat out of the focusing area; two, diamond has a high transmittance and can beused as a window for the transmission of X-rays. Therefore, by placing the object under study very close to the X-ray point sourcehigh-resolution and high-magnification X-rayinspection can pe realized.

25/12/2024

Wishing you a joyful Christmas and aNew Year filled with blessings and good fortune.🎉🎉🎉

05/12/2024

Is the era of the hashtag coming soon?

👇 Diamond application in Si-based ware.

This technology is designed to overcome the limitations of traditional Si-based semiconductor materials in high-temperature, high-power density and high-frequency applications, and to drive a qualitative leap in the performance of semiconductor devices.

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28/11/2024

👏 👏 Fourth band semiconductor materials in the spotlight again

CEO, XING ZHANG, gave a speech on the topic of Ultra High Thermal Conductivity Diamond - A New Generation of Advanced Packaging Materials at the Chip China Conference.

As the demand of chip arithmetic power continues to increase, chip power consumption and power density continue to rise, and heat becomes a limitation to chip development.

High heat can lead to a rapid increase in chip temperature, which in turn affects its performance and reliability. It has become critical to effectively transfer heat away from inside the chip. For example, the heat between the chip and the chip, and the heat between the chip and the package enclosure.

's ultra-high thermal conductivity brings new solutions.

25/11/2024

Are Diamond-cooled GPUs coming soon?

Recently, Akash Systems claims that it's fused synthetic diamond with conductive materials like Gallium Nitride to make semiconductors. Diamond is said to be five times more thermally conductive than copper, making it perfect for dissipating heat from electronic devices.

When GPUs operate under high loads, they generate a significant amount of heat, thus requiring more efficient cooling solutions.

is the first to adopt diamond coolingsolutions in silicon microchips, with chipspeeds at least twice the rated speed. According to reports, this solution was testedon high-end Nvidia GPUs that Nvidia has not yet released, and its performance is three times that of regular chips.

Diamond-encrusted Chip Cooling Solutions
Diamond is an excellent heat dissipation material. With minimum dissipation losssuperior heat dissipation, and the ability to operate steadily at high temperatures, diamond heat sinks have been utilized in high-end processors such as GPUs, enhancing the efficiency and lifespan of devices effectively.

07/11/2024

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Diamond is a structure of carbon. In a diamond crystal, each carbon atom has 4 nearest neighboring carbon atoms and 12 next neighboring carbon atoms. There are 8 atoms in a unit cube. As the radius of boron atoms is smaller than that of carbon atoms, it is easy to enter the diamond crystal lattice. There are three possible forms of boron in diamond crystals: one is that boron atoms take the place of carbon atoms; the second is that boron atoms are located in between carbon atoms; and the third is that boron atoms also fill the defects appearing in the growth process of diamond crystals, especially surface defects, and they all have an effect on the performance of diamond crystals.

Boron in diamond crystals can be added by means of boron or borides. Due to the introduction of boron atoms, the oxidation resistance, electrical conductivity, chemical affection and mechanical properties of diamond are significantly changed. The boron content in boron-containing diamond crystals is generally very low, but the effect on improving and enhancing the properties of diamond crystals is significant, especially in the semiconductor properties.

For pure diamond, because it is not free to move inside the electron and has a 5.5ev wide forbidden band, so the resistivity is very high, can be used as a good electrical insulator; However, when the diamond doped into the Ⅲ or Ⅴ elements, diamond can be transformed into a semiconductor or even a conductor from the insulator. With three valence electrons of boron atoms into the diamond lattice will replace the carbon atom in the form of substitution to become the main center, the lattice produces hole carriers, diamond becomes a hole semiconductor, this doping is called P-type doping. With the increase of boron content, the conductivity of diamond increases.

P-type boron doped single crystal diamond is the material of choice for the preparation of high temperature, high power semiconductor components, and has broad application prospects in the fields of electronics, nuclear energy and aerospace. At present, further research should be done in diamond boron doping to improve the carrier mobility of boron doped diamond by choosing suitable boron sources and adjusting the doping concentration of boron, etc., and apply it to the preparation of diodes, field effect transistors and detectors during the period to improve the working performance of the devices.
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05/11/2024

Prof. Zhang, on behalf of CSMH, presented the following research results at the Semiconductor Applications Conference🎊

1. High-quality diamond single crystals were successfully realized using MPCVD, and a diamond single crystal film with p-type conductivity was obtained by boron (B) doping to achieve a wide range of modulation of the hole carrier concentration 1016~1019 cm-3, with a mobility of up to 327 cm-2/Vs.

2. Ga2O3 films were successfully epitaxialized on diamond substrates, and it was confirmed that Ga2O3 formed a specific epitaxial growth structure through the domain matching mechanism, and combined with the X-ray photoelectron spectroscopy, it was confirmed that the interface was a “staggered” type energy band arrangement.

3. The thermal boundary conductance (TBC) of the Ga2O3 and diamond interface obtained by PLD is 66 MW/m2-K , which is better than that of the current bonding method, and there is still a large potential to improve the thermal transport performance of the interface compared with the theoretically calculated results.

Single crystal diamond (thermal grade, optical grade, electronic grade) is one of the CSMH core products, which has the best thermal conductivity (up to 2200W/m·k) in all known natrual materials, as well as excellent properties such as high hardness, high chemical stability, high optical transmittance, extremely wide forbidden bandwidth, negative electrophilicity, high insulating property and good biocompatibility, etc.

With its wide range of application prospects in the high-tech fields such as super-precision machining, semiconductors, aerospace and aviation, Nuclear energy and other high-tech fields, it has become a hot research material in many fields of scientific research frontiers.
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31/05/2024

We are pleased to find that the integration of diamonds into UAV solar cells, chips, sensors, and diamond gyroscopes will enhance the radar sensing capabilities, sensitivity, endurance, and power efficiency of UAVs. CSMH's primary products consist of diamond heat sinks, wafers, windows, and heterojunction integrated composite substrates.

28/02/2024

From March 6th to 8th, we will meet you at the Asia Optoelectronics Expo in Singapore. If you are interested, please come to the site to learn about our professional laser heat sinks and diamond related products.

20/09/2023

Welcome to EuMW 2023，19– 21 September 2023，Our booth No. 587B，we bring many exhibits ，diamond wafer，diamond heat sink ，diamond window etc.

20/09/2023

Welcome to EuMW 2023，19– 21 September 2023，Our booth No. 587B，we bring many exhibits ，diamond wafer，diamond heat sink ，diamond window etc.

Address

No. 253 Guankou Avenue, Jimei District, Xiamen City
Xiamen
360000

Telephone

+8613616001136

Website

http://en.csmh-semi.com/

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