Send Message
ABOUT US
Your Professional & Reliable Partner.
SHANGHAI FAMOUS TRADE CO.,LTD. locates in the city of Shanghai, Which is the best city of China, and our factory is founded in Wuxi city in 2014.We specialize in processing a varity of materials into wafers, substrates and custiomized optical glass parts.components widely used in electronics, optics, optoelectronics and many other fields. We also have been working closely with many domestic and oversea universities, research institutions and companies, provide customized products and services ...
Learn More

0

Year Established

0

Million+
Annual Sales
China SHANGHAI FAMOUS TRADE CO.,LTD High quality
Trust Seal, Credit Check, RoSH and Supplier Capability Assessment. company has strictly quality control system and professional test lab.
China SHANGHAI FAMOUS TRADE CO.,LTD DEVELOPMENT
Internal professional design team and advanced machinery workshop. We can cooperate to develop the products you need.
China SHANGHAI FAMOUS TRADE CO.,LTD MANUFACTURING
Advanced automatic machines, strictly process control system. We can manufacture all the Electrical terminals beyond your demand.
China SHANGHAI FAMOUS TRADE CO.,LTD 100% SERVICE
Bulk and customized small packaging, FOB, CIF, DDU and DDP. Let us help you find the best solution for all your concerns.

Quality Gallium Nitride Wafer & Sapphire Wafer manufacturer

Find Products That Better Meet Your Requirements.
Cases & News
The Latest Hot Spots
ZMSH Case Study: Premier Supplier of High-Quality Synthetic Colored Sapphires
ZMSH Case Study: Premier Supplier of High-Quality Synthetic Colored Sapphires     Introduction ZMSH stands as a leading name in the synthetic gemstone industry, providing an extensive range of high-quality, vibrant colored sapphires. Our offerings include a wide palette of colors such as royal blue, vivid red, yellow, pink, pink-orange, purple, and multiple green tones, including emerald and olive green. With a commitment to precision and excellence, ZMSH has become a preferred partner for businesses that require reliable, visually striking, and durable synthetic gemstones. Highlighting Our Synthetic Gemstones At the core of ZMSH’s product range are synthetic sapphires that emulate the brilliance and quality of natural gemstones while offering numerous advantages. As a synthetic product, these sapphires are carefully manufactured to achieve exceptional color consistency and durability, making them a superior alternative to naturally occurring stones. Benefits of Choosing Synthetic Sapphires Unmatched Consistency: Our lab-created sapphires are produced under controlled conditions, ensuring they meet strict quality standards. This process guarantees a flawless appearance, free from the color and clarity variations often seen in mined gemstones. Broad Color Selection: ZMSH offers a diverse array of colors, including royal blue, ruby red, and softer tones like pink and pink-orange. We also provide several shades of green, from emerald to olive, tailored to meet specific customer demands. This flexibility in color and tone customization makes our sapphires perfect for a wide range of design and industrial purposes. Affordable Pricing: Lab-grown sapphires present a more budget-friendly alternative without sacrificing visual appeal or structural integrity. They provide excellent value for clients who need high-quality gemstones at a fraction of the cost of natural stones, making them ideal for both luxury products and practical applications. Environmentally and Ethically Sound: By opting for synthetic gemstones, customers can avoid the environmental damage and ethical concerns often linked with traditional gemstone mining. ZMSH’s synthetic sapphires are created in an eco-conscious manner, offering a sustainable and responsible choice. Strength and Versatility: Synthetic sapphires possess the same hardness as their natural counterparts, making them ideal for a variety of uses, from high-end jewelry to industrial-grade applications. With a hardness of 9 on the Mohs scale, these gems ensure long-lasting durability in all settings   Conclusion ZMSH is dedicated to delivering top-tier synthetic colored sapphires, offering clients an array of customizable, cost-efficient, and sustainable gemstone solutions. Whether you’re seeking royal blue for elegant accessories, emerald green for industrial components, or any other striking color, ZMSH provides gemstones that combine beauty, consistency, and strength. Our expertise in producing synthetic sapphires allows us to meet the needs of various industries, ensuring reliable quality and ethical practices in every order.
Case Study: ZMSH's Breakthrough with the New 4H/6H-P 3C-N SiC Substrate
Introduction ZMSH has consistently been at the forefront of silicon carbide (SiC) wafer and substrate innovation, known for providing high-performance 6H-SiC and 4H-SiC substrates that are integral to the development of advanced electronic devices. In response to the growing demand for more capable materials in high-power and high-frequency applications, ZMSH has expanded its product offerings with the introduction of the 4H/6H-P 3C-N SiC substrate. This new product represents a significant technological leap by combining traditional 4H/6H polytype SiC substrates with innovative 3C-N SiC films, offering a new level of performance and efficiency for next-generation devices. Existing Product Overview: 6H-SiC and 4H-SiC Substrates Key Features Crystal Structure: Both 6H-SiC and 4H-SiC possess hexagonal crystal structures. 6H-SiC has slightly lower electron mobility and a narrower bandgap, whereas 4H-SiC boasts higher electron mobility and a wider bandgap of 3.2 eV, making it suitable for high-frequency, high-power applications. Electrical Conductivity: Available in both N-type and semi-insulating options, allowing flexibility for various device needs. Thermal Conductivity: These substrates exhibit thermal conductivities ranging from 3.2 to 4.9 W/cm·K, which is essential for dissipating heat in high-temperature environments. Mechanical Strength: The substrates feature a Mohs hardness of 9.2, providing robustness and durability for use in demanding applications. Typical Uses: Commonly employed in power electronics, high-frequency devices, and environments requiring resistance to high temperatures and radiation. Challenges While 6H-SiC and 4H-SiC are highly valued, they encounter certain limitations in specific high-power, high-temperature, and high-frequency scenarios. Issues such as defect rates, limited electron mobility, and narrower bandgap restrict their effectiveness for next-generation applications. The market increasingly requires materials with improved performance and fewer defects to ensure higher operational efficiency. New Product Innovation: 4H/6H-P 3C-N SiC Substrates To overcome the limitations of its earlier SiC substrates, ZMSH has developed the 4H/6H-P 3C-N SiC substrate. This novel product leverages epitaxial growth of 3C-N SiC films on 4H/6H polytype substrates, providing enhanced electronic and mechanical properties. Key Technological Improvements Polytype and Film Integration: The 3C-SiC films are grown epitaxially using chemical vapor deposition (CVD) on 4H/6H substrates, significantly reducing lattice mismatch and defect density, leading to improved material integrity. Enhanced Electron Mobility: The 3C-SiC film offers superior electron mobility compared to the traditional 4H/6H substrates, making it ideal for high-frequency applications. Improved Breakdown Voltage: Tests indicate that the new substrate offers significantly higher breakdown voltage, making it a better fit for power-intensive applications. Defect Reduction: Optimized growth techniques minimize crystal defects and dislocations, ensuring long-term stability in challenging environments. Optoelectronic Capabilities: The 3C-SiC film also introduces unique optoelectronic features, particularly useful for ultraviolet detectors and various other optoelectronic applications. Advantages of the New 4H/6H-P 3C-N SiC Substrate Higher Electron Mobility and Breakdown Strength: The 3C-N SiC film ensures superior stability and efficiency in high-power, high-frequency devices, resulting in longer operational lifespans and higher performance. Improved Thermal Conductivity and Stability: With enhanced heat dissipation capabilities and stability at elevated temperatures (over 1000°C), the substrate is well-suited for high-temperature applications. Expanded Optoelectronic Applications: The substrate’s optoelectronic properties broaden its scope of application, making it ideal for ultraviolet sensors and other advanced optoelectronic devices. Increased Chemical Durability: The new substrate exhibits greater resistance to chemical corrosion and oxidation, which is vital for use in harsh industrial environments. Application Areas The 4H/6H-P 3C-N SiC substrate is ideal for a wide range of cutting-edge applications due to its advanced electrical, thermal, and optoelectronic properties: Power Electronics: Its superior breakdown voltage and thermal management make it the substrate of choice for high-power devices such as MOSFETs, IGBTs, and Schottky diodes. RF and Microwave Devices: The high electron mobility ensures exceptional performance in high-frequency RF and microwave devices. Ultraviolet Detectors and Optoelectronics: The optoelectronic properties of 3C-SiC make it particularly suitable for UV detection and various optoelectronic sensors. Conclusion and Product Recommendation ZMSH’s launch of the 4H/6H-P 3C-N SiC crystal substrate marks a significant technological advancement in SiC substrate materials. This innovative product, with its enhanced electron mobility, reduced defect density, and improved breakdown voltage, is well-positioned to meet the growing demands of the power, frequency, and optoelectronics markets. Its long-term stability under extreme conditions also makes it a highly reliable choice for a range of applications. ZMSH encourages its customers to adopt the 4H/6H-P 3C-N SiC substrate to take advantage of its cutting-edge performance capabilities. This product not only fulfills the stringent requirements of next-generation devices but also helps customers achieve a competitive edge in a rapidly evolving market.   Product Recommendation   4inch 3C N-type SiC Substrate Silicon Carbide Substrate Thick 350um Prime Grade Dummy Grade       - support customized ones with design artwork   - a cubic crystal (3C SiC), made by SiC monocrystal   - High hardness, Mohs hardness reaches 9.2, second only to diamond.   - excellent thermal conductivity, suitable for high-temperature environments.   - wide bandgap characteristics, suitable for high-frequency, high-power electronic devices.
micro-LED based on self-supporting GaN
micro-LED based on self-supporting GaN   Chinese researchers have been exploring the benefits of using self-supporting (FS) gallium nitride (GaN) as a substrate for miniature light emitting diodes (leds) [Guobin Wang et al, Optics Express, v32, p31463, 2024]. In particular, the team has developed an optimized indium Gallium nitride (InGaN) multi-quantum well (MQW) structure that performs better at lower injection current densities (about 10A/cm2) and lower drive voltages, suitable for advanced microdisplays used in augmented reality (AR) and virtual reality (VR) installations, in which case, The higher cost of self-supporting Gans can be compensated for by improved efficiency.   The researchers are affiliated with the University of Science and Technology of China, Suzhou Institute of Nanotechnology and Nanobionics, Jiangsu 3rd Generation Semiconductor Research Institute, Nanjing University, Soozhou University and Suzhou Nawei Technology Co., LTD. The research team believes that this micro-LED is expected to be used in displays with ultra-high pixel density (PPI) submicron or nanometer LED configurations.   The researchers compared the performance of micro-leds manufactured on a self-supporting GaN template and a GaN/ sapphire template (Figure 1).     Figure 1: a) micro-LED epitaxial scheme; b) micro-LED epitaxial film; c) micro-LED chip structure; d) Transmission electron microscope (TEM) cross-section images.     Metal-organic chemical vapor deposition (MOCVD) epitaxial structure includes 100nm N-type aluminum Gallium nitride (n-AlGaN) carrier diffusion/expansion layer (CSL), 2μm n-GaN contact layer, 100nm low silane unintentional doping (u-) GaN high electron mobility layer, 20x(2.5nm/2.5nm) In0.05Ga0.95/GaN strain release layer (SRL), 6x(2.5nm/10nm) blue InGaN/GaN multi-quantum well, 8x(1.5nm/1.5nm) p-AlGaN/GaN Electron Barrier layer (EBL), 80nm P-gan hole injection layer and 2nm heavily doped p+-GaN contact layer.   These materials were made into leds with a diameter of 10μm and with indium tin oxide (ITO) transparent contact and silicon dioxide (SiO2) sidewall passivation. The chips manufactured on the heteroepitaxial GaN/ sapphire template show a large performance difference. In particular, the intensity and peak wavelength vary greatly depending on the location within the chip. At a current density of 10A/cm2, a chip on the sapphire showed a wavelength shift of 6.8nm between the center and the edge. Of the two chips from the sapphire wafer, one is only 76 percent as strong as the other.   For chips made on self-supporting GaN, the wavelength variation is reduced to 2.6nm, and the strength performance of the two different chips is more similar. The researchers attribute the wavelength uniformity variation to different stress states in the homogeneous and heterogeneous structures: Raman spectroscopy shows residual stresses of 0.023GPa and 0.535GPa, respectively.   The cathode luminescence shows that the dislocation density of heteroepitaxial plates is about 108/cm2, while that of homoepitaxial plates is about 105/cm2. "The lower dislocation density can minimize the leakage path and improve the luminous efficiency," commented the research team. Compared with heteroepitaxial chips, although the reverse leakage current of the homoepitaxial LED is reduced, the current response under the forward bias is also reduced. Despite the lower current, chips on self-supporting Gans have higher external quantum efficiency (EQE) : 14% in one case, compared with 10% for chips on sapphire templates. By comparing the photoluminescence performance at 10K and 300K (room temperature), the internal quantum efficiency (IQE) of the two chips is estimated to be 73.2% and 60.8%, respectively.   Based on the simulation work, the researchers designed and implemented an optimized epitaxial structure on a self-supporting GaN that improves the external quantum efficiency and voltage performance of the microdisplay at lower injection current densities (Figure 2). In particular, homoepitaxy achieves a thinner barrier and sharp interface, whereas the same structures achieved in heteroepitaxy show a more blurred profile under TEM examination.       Figure 2: Transmission electron microscope images of the multi-quantum well region: a) original and optimized homoepitaxy structures, and b) optimized structures realized in heterogeneous epitaxy. c) External quantum efficiency of homogeneous epitaxial micro-LED chip, d) current-voltage curve of homogeneous epitaxial micro-LED chip.     The thinner barrier partly simulates the V-shaped pits that can easily form around the dislocation. In heteroepitaxial leds, V-shaped pits have been found to have beneficial performance effects, such as improved hole injection into the luminous region, in part due to a thinning barrier in the multi-quantum well structure around the V-shaped pits.   When the injection current density is 10A/cm2, the external quantum efficiency of the homogeneous epitaxial LED increases from 7.9% to 14.8%. The voltage required to drive 10μA current has been reduced from 2.78V to 2.55V.   ZMSH Sulotion for GaN wafer The growing demand for high-speed, high-temperature and high power-handling capabilities has madethe semiconductor industry rethink the choice of materials used as semiconductors. For instance, as various faster and smaller computing devices arise, the use of silicon is making it difficult to sustain Moore’s Law. But also in power electronics, So GaN semiconductor wafer is grown out for the need. Due to its unique characteristics (high maximum current, high breakdown voltage, and high switching frequency), Gallium Nitride GaN is the unique material of choice to solve energy problems of the future. GaN based systems have higher power efficiency, thus reducing power losses, switch at higher frequency, thus reducing size and weight.

2024

10/14

SiC New Opportunity! Mercedes actually uses it here
SiC New Opportunity! Mercedes actually uses it here   Recently, silicon carbide has opened up a new application scenario in the automotive market - electric force extractor (ePTO), which can be widely used in trucks, commercial vehicles, construction machinery, agricultural machinery and construction equipment markets.   Why use silicon carbide for electric force extractor? Which car companies have adopted it? How big is the future market space of electric power extractor?     Silicon carbide into the electric force extractor Mercedes-Benz, Hydro Leduc, etc., has been adopted   As we all know, new energy vehicles are the largest application direction of silicon carbide semiconductors, application scenarios include main drive electronic control, OBC/DC-DC, air conditioning compressors, fuel vehicle air compressors, PTC, relays, etc., and vehicle application scenarios are still expanding.   Silicon carbide has been used in electric force take-up (ePTO) by many automotive companies.   According to an October 7 press release from CISSOID, their SiC motor control module is being used by hydraulic component manufacturer Hydro Leduc's modular ePTO, which will be used to drive the hydraulic systems of new energy trucks and other off-road vehicles.     Hydro Leduc's new ePTO uses a 76 kW brushless motor, the ME230, and a 9-piston XRe series spherical piston hydraulic pump. The motor controller uses CISSOID's three-phase 1200V/340-550A silicon carbide power module. Suitable for applications up to 650 Vdc.   This silicon carbon-based ePTO is a high-performance, efficient electro-hydraulic solution with advantages including low noise, high efficiency, low pulsation and fast speed in self-priming mode.   In fact, as early as May 2022, ZF joined forces with Mercedes-Benz Trucks to provide the latter's electric trucks with a silicon carbon-based electric power harvester system, eWorX.   Zf's eWorX system is equipped with a 50 kW rated electric motor, inverter and control unit with dedicated software, as well as a cooling system and hydraulic pump.     Working principle driving force and market space analysis of electric power harvester   POWER TAKE-OFF (PTO) is an important part of trucks, commercial vehicles, motorhomes, construction machinery, agricultural machinery and construction machinery, mainly used to drive the hydraulic system and other auxiliary functions of special equipment such as cranes, garbage trucks and concrete mixers.   Currently, more than 70% of Ptos on the market are powered by internal combustion engines. Take the hydraulic excavator as an example, its operation process is to drive the hydraulic pump through the engine, the hydraulic pump will produce high pressure fluid, and then drive the hydraulic cylinder, so that the relevant executive device to work.   Schematic diagram of internal combustion engine force extractor     As we all know, traditional trucks, non-road mobile equipment (engineering construction machinery, agricultural machinery, forestry machinery, industrial vehicles, etc.) have large fuel consumption, environmental pollution and other problems, the Ministry of Transport, the Ministry of ecological Environment and other countries around the world have introduced strict regulations to promote the electrification of these vehicles and machinery transformation. To meet the requirements of energy conservation, emission reduction and green development.   This also makes the force takeer will also shift from the internal combustion engine drive mode to electrification, and the use of battery-driven electric force takeer (ePTO) will become the mainstream.   At present, there are two electric power extractor (ePTO) schemes on the market: pure electric and hybrid, the difference is that the former is an external charging pile to charge the battery, the latter is to charge the battery through the internal combustion engine power generation, the main principle is through the inverter to convert the battery's direct current into alternating current, so as to drive the ePTO, so that the hydraulic system to work.     The advantages of ePTO are that it is in line with the trend of environmental protection and electrification, energy efficiency, quieter and more flexible design.     According to the analysis of Professor Xu Bing of Zhejiang University in 2022, the current non-road mobile machine is only a simple replacement of the electric drive system for the internal combustion engine, and the hydraulic components and systems have not changed, and the technical advantages of the motor have not been fully utilized, in the era of electrization, the hydraulic system configuration of non-road mobile machines will have many innovations and changes.   With the evolution of electric technology for special vehicles such as sanitation trucks, dump trucks, public security fire trucks, building materials mixing trucks, and hazardous chemicals trucks, ePTO will be a new blue ocean market in the future. According to Leandro Girardi, vice president of aftermarket for Eaton North America, the future growth rate for electric special purpose vehicles is 35 to 50 percent per year. Bosch believes that between 2023 and 2025, the penetration rate of electric construction machinery vehicles will be around 25%.     ZMSH Sulotion for SiC wafer 2inch 4inch 6inch 8Inch Silicon Carbide Wafer Sic Substrates Dummy Research Prime Grade   Silicon carbide (SiC), also known as carborundum, is a semiconductor containing silicon and carbon with chemical formula SiC. SiC is used in semiconductor electronics devices that operate at high temperatures or high voltages, or both.SiC is also one of the important LED components, it is a popular substrate for growing GaN devices, and it also serves as a heat spreader in high-power LEDs.  

2024

10/14

Silicon carbide AR glasses debut!
On September 26, according to the "West Lake Science and Technology" official micro message, by West Lake University and its incubation enterprise Mu De Wei Na led the research of the "extreme thin and thin silicon carbide AR diffraction optical waveguide" scientific and technological achievements in September 24, the world's first silicon carbide AR glasses lens scene debut. It looks the same as everyday sunglasses, but compared with traditional AR glasses, it is thinner and lighter, with a single weight of only 2.7 grams and a thickness of only 0.55 mm.                According to reports, in the traditional AR diffraction optical waveguide glasses, the heat accumulation generated by the projection optical machine and the sensing and computing unit will make the device enter the overheating protection, so it can only display a small area of the screen. Different from the traditional mirror leg heat dissipation method, this silicon carbide AR glasses use the nature of the material itself, through special design, innovatively use the lens for heat dissipation, greatly improving the heat dissipation efficiency.     In addition, in order to achieve a full-color display, traditional AR glasses usually need to use multiple layers of high-refractive index glass to conduct light, which leads to thick and uncomfortable lenses. The silicon carbide AR glasses only need a waveguide to present a full-color picture with a large field of view.   It's worth mentioning that Meta launched its first true AR glasses, Orion, on September 25. Orion AR glasses feature a stylish black frame design, weigh just 98 grams, and feature silicon carbide lenses and a Micro LED micro-display.     TrendForce Consulting analysis, Orion AR glasses optical design using silicon carbide material diffraction optical waveguide, combined with JBD's three-slice full-color LEDoS technology, can achieve up to 70 degrees of field of view (FOV).        

2024

09/29