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Application of Tungsten in Contact Hole Structure
A contact hole is an opening in the insulating layer between the metal layer and the active area or polysilicon. It is a key structure in microelectronic devices. It is usually formed by etching in the vertical direction of the silicon wafer and is used to connect the first layer of metal interconnection lines. and substrate devices, and filled with metals such as tungsten. It is commonly used in the integrated circuit manufacturing process to achieve electrical connections between different layers in the circuit. Since the quality of contact holes directly affects the performance and reliability of the entire circuit, many factors need to be considered when designing and manufacturing contact holes, such as electrical properties, thermal stability, mechanical strength, and manufacturability. To ensure a good electrical connection and low resistance, contact holes are often filled with metal or other conductive material. At the same time, in order to prevent mechanical damage and chemical corrosion, the contact holes are usually covered with a protective layer. The formation method of the contact hole structure includes: providing a semiconductor substrate with a dielectric layer, forming a contact hole in the dielectric layer; sequentially depositing a metal barrier structure, an amorphous silicon barrier...
2024-05-08 Learn More
Tungsten copper alloy for optical chip base
Optical chip base is an important heat dissipation component in optical module components, mainly made of tungsten copper alloy material. Tungsten copper alloy is a pseudo alloy composed of tungsten elements and copper elements. The copper content is 10% to 50%. It has a small volume expansion coefficient, excellent electrical conductivity, thermal conductivity, high temperature resistance, corrosion resistance and resistance to corrosion. Characteristics such as oxidation properties have high application value in the high-speed optical module industry. First of all, the low volume expansion coefficient of tungsten-copper alloy is particularly important when the optical module is working. As the working speed of the optical module increases, the heat generated inside will also increase sharply. If the expansion coefficient of the heat dissipation material is too large, it may cause the structure of the optical module to become unstable, thereby affecting its performance. The low expansion coefficient of tungsten-copper alloy ensures that it can maintain a stable structure in high-temperature environments, thereby ensuring the stable operation of the optical module. Secondly, tungsten copper alloy has good electrical and thermal conductivity. In high-speed optical modules, the heat generated by the optical chip needs to be dissipated in time to avoid performance degradation...
2024-04-30 Learn More
Sheets made of molybdenum, tungsten, tantalum, and niobium
Our sheets made of molybdenum, tungsten, tantalum, and niobium are used wherever unique material properties are required, be it furnace construction, medical technology, or as a precursor material for the further processing of semiconductor components.Our equipment enables us to offer a wide range of products for flat semi-finished goods, giving you diverse possibilities. We can also manufacture large quantities without any problems. Thanks to the large-scale capacities of our production facilities, we can offer you a wide range of products in large quantities. Whether shiny, polished, or pickled – we have the right surface in the desired dimension for your application.We would be happy to produce tailor-made sheets for you as well as help you find innovative solutions for your specific requirements. The optimal material for your application You can select from a number of materials to find just the right one for your requirements: Mo Molybdenum has versatile applications. It is creep-resistant, has a high rigidity, low thermal expansion, and a high thermal conductivity. It is also corrosion-resistant compared to many other metal and glass melts. TZM Titanium-zircon-molybdenum. This is a solid solution- and particle-reinforced molybdenum alloy with very high strength even at high temperatures. It has a higher...
2024-04-25 Learn More
Tungsten wire for manufacturing filaments
Whether it’s a simple incandescent lamp, a general lamp, or a special halogen lamp, all of these require filaments that are made of dimensionally stable tungsten wire. We have developed the NS (non-sag) tungsten wire especially for this purpose. It is characterized by its higher creep resistance and satisfies the stringent requirements for service life, light yield, reliability, and mechanical robustness. Top quality guarantees reproducible processes We guarantee a purity of at least 99.95% – the perfect prerequisite for reproducible and controllable processes. We also manufacture our wires with very narrow diametrical tolerances, guaranteeing consistent mechanical properties and a defined “split level”. This is based on the frequency, shape, length, and depth of radial cracks and is determined by means of eddy current testing. The drawing steps and heat treatment during production are designed to achieve an excellent high-temperature creep resistance and satisfy the most stringent requirements. Customized products for your application We provide our W-NS fine wire in diameters of 12 µm to 300 µm with a diametrical tolerance of ± 1%. The W-NS fine wire is available with a black, cleaned, and electropolished surface, aligned or annealed. We provide our redraw wire with a diameter of 800 to...
2024-04-16 Learn More

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