Professional new material supplier, nano particle manufacturer |eab.cc

The backfilling of the bathroom is a crucial part of any renovation. Backfilling is an essential part of bathroom renovations. It’s used to stop leakage, protect the pipe, improve thermal insulation, etc. In selecting bathroom materials, you should consider several factors depending on your specific situation. For example, take into account the performance and cost of backfill material as well the environmental protection.

There are five types of backfills available on the market: common slags, carbon-slags backfills (also known as “carbon slag”), ceramics backfills (also known as “ceramic backfills”), overhead backfills and foam cements backfills. We are confused about the different types of backfill:

Backfilling with slag can be cheaper, but because it is heavy and so dense, the slab is more likely to crack. This could lead to leakage of water.

It is cheaper to use overhead backfill because you don’t need as much material.

Since a few decades, foam cement backfilling has been popular. But does it come with any disadvantages?

For your information, here are five bathroom backfill materials with their advantages and disadvantages and some selection advice:

Building debris backfill

Advantages:

The advantages of slag backfill are its lower cost, ease of construction and certain thermal insulation properties.

Disadvantages:

Backfilling with construction waste will damage the waterproofing or the pipeline due to its sharp edges.

Recommendation:

Has been eliminated. This is not a method that should be used. It will cost too much for a family to backfill with construction debris. To protect the waterproofing of the ground, first use fine sand, then red bricks, to protect the pipeline. The backfill should be compacted in layers. Finally, mud-mortar to level the surface will provide good secondary drainage.

Carbon Dregs Backfill

Advantages:

Carbon slag as a backfill has many advantages, including its low cost, ease of construction, lightweight structure, good moisture absorption, and excellent moisture control.

Disadvantages:

However, carbon dregs are not as stable, they can easily deform and fall off. They’re also flimsy.

Recommendation:

In recent years, carbon slag has rarely been chosen as a backfill in bathrooms due to its negatives.

Ceramic Backfill

Advantages:

Ceramic backfill has many advantages including high strength, good insulation and corrosion resistance.

Disadvantages:

Before pouring in the ceramic, use lightweight bricks for layered partition. Divide the bathroom into several squares. Fill the squares with the ceramic, then place a reinforcing mesh with a diameter around one centimetre. Finally, level with cement mortar.

Suggestion: Look at your family’s budget and take it into consideration.

Overhead Backfill

Advantages:

Backfilling with overhead backfill has many advantages, including its simplicity, stability, inability to deform and easy fall-off.

Disadvantages:

Construction takes a long time, and labour costs are higher than other backfilling techniques. The bottom drain is located overhead and will make the sound of running waters more noticeable.

It is important to carefully consider whether the disadvantages of the situation outweigh any advantages.

Foamed Cement Backfill

Advantages:

Foamed cement is an increasingly popular backfill. It is also safe and eco-friendly. The raw material for cement foaming agents, plant-based fat acid, is both safe and environmentally friendly.

Benefits include good heat conservation, light weight, high strength and corrosion resistance. The backfilling process is greatly accelerated and reduced in cost, as it can be filled seamlessly and with very little effort.

Foamed cement can be mixed with cement and used to fix the pipe. If not, the pipe will easily float.

Disadvantages:

It is best to find a builder that has worked with foam cement or look up construction tutorials.

Suggestion:

The majority of people backfill their bathrooms with foamed-cement. Its advantages are still quite obvious.

The five types of backfill for bathrooms all have advantages and disadvantages. In order to choose the right material for your bathroom backfill, you should consider several factors. You must always consider the environment when choosing bathroom backfill materials to ensure the decor of the bathroom is safe and sustainable.

Amazing! The best building material for the industry.

Cement foam board is widely used. Its superior performance can be seen in:

Achieving good fire insulation performance

Cement foam The board is classified as a non-combustible, inorganic thermal insulating material of class A. It can maintain its integrity even at high temperatures and improve the fire performance. Closed porosity is more than 95%. It has excellent thermal insulation properties.

Sound insulation with excellent performance

Cement foam board can have a sound insulation coefficient greater than 45 decibels. This is due to the formation many independent, porous bubbles.

Lightweight seismic capacity

Cement foam board can resist a magnitude 9 earthquake by welding steel structure. Its density is about 250kg/cubic-meter.

Construction is efficient and convenient

Cement Foam Boards can be easily constructed, they require little time to construct and do not need extra materials like sand or cement. They are also easy to stack and use less space. Cement Foam Board can be constructed in 60 minutes by three people, compared to the traditional block walls.

Strengthens the bonding and compression forces

Addition of special fibers increases the compressive force of the cement board. The national testing agency confirms that the bending load can be up to three times the weight of the board (1.5 times national standard), compressive strength more than five MPa (3.5MPa national standard), hanging force more than 1,500N (1,000N national standard).

Environment protection, energy savings and non-toxic and safe

Cement fly ash is used to make cement foam. It won’t melt at high temperatures, and it doesn’t emit any toxic gases. It’s a material that is both environmentally friendly and safe. Cement foam board is not recyclable, and this fact has been recognized by the national industrialization policy.

Cement Foam Board is used widely in industrial plants with large spans, storage facilities, large machine workshops, stadiums exhibition halls airports large-scale utilities and mobile homes as well as residential wall insulation and other construction engineering areas. The problems associated with foam insulation before have been overcome by cement foam board. These include poor thermal insulation properties, high thermal conduction, and cracking.

Hafnium carbide (HfC), is a chemical compound with a distinct character. It has many uses.

1. Hafnium Carbide: Its Properties

Hafnium carburide is a grayish powder that belongs in the metal carbide category. It has high melting points, good hardness and high thermal stability.

Physical property

Hafnium carburide crystals have a cubic face-centered structure and a lattice constant 0.488nm. It is a hard material with a melting temperature of 3410 degrees Celsius.

Chemical property

Hafnium carburide is chemically stable, and it is not soluble in water or acid-base solutions. It is not easily affected by high temperatures. This material is stable at high temperatures. Hafnium carburide has a high radiation resistance, and is therefore suitable for use in nuclear reactors and particle acceleraters.

2. Hafnium Carbide Application

Hafnium carbide is used widely in many industries due to its high melting points, high hardness as well as good thermal and chemical properties.

Electronic field

Hafnium carburide is widely used in electronic fields, and it’s a key component of electronic glue. Hafnium carburide can be used to increase the adhesion and conductivity in electronic paste. Hafnium can be used as an electronic device sealant, increasing the reliability and durability of electronic devices.

Catalytic field

Hafnium carburide is an excellent catalyser that can be used to catalyze countless chemical reactions. One of the most common uses is in auto exhaust treatment, which reduces harmful gas emissions. Hafnium carburide is used in a variety of fields, including hydrogen production, petrochemicals and others.

The optical field

Hafnium carbide is transparent, and it can be used for optical fibers and components. It can enhance the durability and transmission of optical components, and reduce light losses. Hafnium carbide can be used for key components such as lasers, optoelectronics devices and optical fields.

Ceramic field

Hafnium carbide can be used to improve the density and hardness of ceramic materials. It can also improve the performance of high-performance materials such as structural and high temperature ceramics. Hafnium carbide can be used to grind and coat materials.

RBOSCHCO

RBOSCHCO, a global chemical material manufacturer and supplier with more than 12 years of experience, is known for its high-quality Nanomaterials. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. KMPASS, a market leader in the nanotechnology industry, dominates this sector. Our expert team offers solutions that can help industries improve their efficiency, create value and overcome various challenges. You can send an email if you’re looking for Hafnium carburide to: sales1@rboschco.com

Uses and properties of Ti6Al4V Particles

Ti6Al4V powder Due to its excellent physical, chemical, and biocompatibility properties, titanium alloy is widely used in aerospace, medical, and industrial fields. This article will describe the properties, preparation techniques, and applications of titanium alloy powder Ti6Al4V.

Properties of Ti6Al4V Particles

It is an alloy of titanium, vanadium and aluminum. Ti-6Al-4V is its molecular formulation, and it has the following features:

Outstanding performance at all temperatures: Ti6Al4V is a powder with excellent overall performance. It has high strength and stiffness as well as good low-temperature toughness.

Good biocompatibility – Ti6Al4V is used in a variety of medical applications due to its biocompatibility.

Low density: This powder is lighter than stainless steel, nickel-based metals and other materials.

Preparation and use of Ti6Al4V powder

Preparation of Ti6Al4V includes the following methods:

Melting Method: Ti6Al4V is made by melting metal elements like Ti, Al and V. Powder of Ti6Al4V is produced through ball milling processes and hydrogenation.

Mechanical alloying method: By using high-energy balls milling, metal elements like Ti, Al and V can be prepared into Ti6Al4V alloy powder.

Vapor Deposition Method: Ti6Al4V is made by vaporizing elements like Ti, Al, or V onto a substrate using chemical vapor depositing or physical vapor depositing.

Method of ion implantation: Using ion implantation, metal elements like Ti, Al and V are implanted in the matrix to produce Ti6Al4V powder.

Use of Ti6Al4V Particles

The excellent physical and chemical characteristics of Ti6Al4V and its good biocompatibility make it a powder that is widely used in aerospace, medical, and industrial fields.

Medical field

Ti6Al4V Powder is widely used in medical fields due to the biocompatibility of the powder and its high corrosion resistance. For example, it is used in the manufacture of artificial joints and dental implants. These include its good wear resistance and fatigue resistance. It also has a biocompatibility.

Industrial sector

Ti6Al4V Powder is mainly used to manufacture high-temperature materials and equipment in the industrial sector. A good corrosion-resistant and high temperature material, Ti6Al4V powder can be used in the manufacture of key components, such as those for chemical equipments, marine engineering equipment, power tools, and automobile manufacturing. To improve safety and reliability, it can be used to produce key components, such as offshore platforms and ships.

Aerospace field

Ti6Al4V Powder is widely used to produce high-temperature components for aircraft engines and aircraft. Because of its high strength and stiffness as well as good low temperature toughness and excellent corrosion resistance it can withstand extreme temperatures and harsh conditions during high-altitude flights. For example, it can be used to make key parts like aircraft fuselages and wings, landing gears and engines.

Other fields

Other fields can use Ti6Al4V, such as construction, electronics, and environmental protection. As an example, it can be used to make electronic components like high-performance electrode materials or capacitor materials. It can also be used to create high-performance coatings, glass materials, and structural materials.

About KMPASS

KMPASS is a global supplier and manufacturer of high-quality nanomaterials, chemicals, and other materials. We have over 12 year experience. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. KMPASS, a leading manufacturer of nanotechnology products, dominates the market. Our expert team offers solutions to increase the efficiency of different industries, create value and overcome various challenges. You can contact us at sales2@nanotrun.com if you need Ti6Al4V.

Carbide, with its distinct hardness and wear resistance, plays a vital function in many commercial fields. Nevertheless, with the dazzling selection of concrete carbide items on the marketplace, just how to pick high-grade cemented carbide? What are the unidentified keys in this? Next off, allow us discover this mystery with each other.

(carbide)

To select top quality cemented carbide, we should first understand its fundamental attributes. Cemented carbide is mostly made by mixing high-hardness tungsten carbide, titanium carbide, and other metal carbide powders with binders (such as cobalt, nickel, etc), then pressing and sintering. Therefore, the efficiency of concrete carbide depends greatly on its composition proportion, sintering procedure, and succeeding handling.

When picking, the very first point we ought to focus on is the composition of cemented carbide. Top notch cemented carbide must have an affordable proportion of carbides to binders to guarantee adequate hardness, toughness, and stamina. In addition, for cemented carbide for specific objectives, such as cutting tools, molds, etc, the added trace elements and alloying components need to be thought about to additional maximize its efficiency.

The influence of the sintering process on the residential or commercial properties of concrete carbide is also critical. Top notch cemented carbide must take on advanced sintering procedures, such as vacuum sintering, warm press sintering, etc, to make certain the harmony and thickness of its inner structure. These advanced sintering processes can get rid of issues and holes within the material and boost the strength and wear resistance of cemented carbide.

(carbide)

Along with make-up and modern technology, the succeeding handling of cemented carbide is similarly vital. As an example, warm therapy, surface treatment, and other processes can additionally enhance the efficiency and service life of concrete carbide. For that reason, when choosing, we must likewise pay attention to the high quality and level of these processing techniques.

So, exist any unidentified option tricks? The solution is yes.

First, observe the look of concrete carbide. The surface area of high-grade cemented carbide must be smooth, crack-free, pore-free, and also in color. If there are obvious flaws or unequal shade on the surface, it is likely a good-quality product.

(carbide)

Second, touch the carbide to pay attention for the audio. High-quality carbide has a crisp, pleasant audio when struck, while poor-quality products may generate plain or noisy noises. This is due to the fact that the internal structure of premium concrete carbide is dense and uniform, which can produce excellent sound resonance.

Third, comprehend the producer and brand name of the product. Widely known concrete carbide producers usually have actually progressed manufacturing equipment and procedures and can generate premium concrete carbide products. Therefore, when choosing, we can give concern to products from these brands.

(carbide)

Of course, choosing top notch concrete carbide likewise requires to be combined with particular use demands and circumstances. Different application circumstances have different efficiency requirements for cemented carbide, so we need to select proper concrete carbide items based on real needs.

Vendor

Mycarbides is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality carbides and relative materials. The company export to many countries, such as USA, Canada,Europe,UAE,South Africa, etc. As a leading nanotechnology development manufacturer, mycarbides dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are looking for carbide light, please send an email to: nanotrun@yahoo.com

Inquiry us

Betaine surfactants

It is generated by the reaction of fatty tertiary amines and sodium chloroacetate, including cocoylpropyl betaine, dodecyl betaine, cetyl betaine, and lauroyl propyl betaine. It is milder than the initial 3 and is presently the major surfactant in infant hair shampoo.

In 1940, the American DuPont Company developed and applied this kind of compound. Like amino acid surfactants, this kind of surfactant has solid detergency and reduced inflammation, and the solution is weakly acidic. Animal experiments have verified that this kind of substance is much less toxic. It is an excellent surfactant.

( surfactants in shampoos)

Amino acid surfactants

Made from a mix of coconut oil and amino acids, it is risk-free, mild, and non-irritating. The most vital thing is that it is normally weakly acidic and fulfills the pH requirements of healthy and balanced skin and hair. It is the suitable surfactant in baby hair shampoo. They are “cocoyl glycine,” “cocoyl glutamate disodium,” etc

From the point of view of chemical properties, its pH value is between 5.5 and 6.5, which is weakly acidic and near the pH worth of human skin. Therefore, it is mild and skin-friendly and ideal for all hair kinds; amino acid surfactants are zwitterionic and conveniently soluble in water. It is easy to rinse tidy.

But it also has constraints. Amino acid surfactants are a number of to loads of times more costly than common surfactants, and many are hair shampoos specially produced babies and children. The drawbacks of amino acid surfactants are that they are not abundant in foam and have weak decontamination ability.

The sensation of solidification and turbidity of surfactants in winter is generally because of the reduced temperature creating some of its components to crystallize or precipitate.

(surfactants in shampoos)

What happens if surfactant solidifies and becomes turbid in winter?

This is a physical sensation and does not have a significant effect on the effectiveness of surfactants. In order to solve this issue, the adhering to approaches can be taken:

1. Raise the temperature: Position the surfactant in a warm setting or enhance its temperature by heating so that the taken shape or sped up parts will progressively liquify and the surfactant will certainly return to a clear state. Nevertheless, it needs to be noted that the temperature should be prevented when heating to prevent affecting the surfactant’s performance.

2. Stirring: For surfactants that have actually strengthened or come to be turbid, they can be brought back to a consistent state by stirring. Stirring can aid taken shape or sped up ingredients redisperse into the liquid and enhance surfactant clearness.

3. Add solvent: Sometimes, an appropriate amount of solvent can be included in thin down the surfactant, therefore improving its coagulation and turbidity. Nevertheless, the included solvent should be compatible with the surfactant and needs to not impact its use result.

Vendor of Surfactant

TRUNNANO is a supplier of surfactant 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 are looking for high-quality Triethylene glycol oleyl ether CAS 9004-98-2, please feel free to contact us and send an inquiry.

Inquiry us

Trunnano Nano Silica Powder Recycling waste materials for concrete manufacturing provides promising resources for producing high-quality concrete and helps properly address waste disposal issues. It is a good choice for concrete because the waste ceramic grinding powder has a highly durable structure that cannot be processed through any recycling system, and its production volume is large.

For large-scale projects that require a large amount of cement, reducing the required amount of Portland cement without compromising concrete performance is of great significance. In addition, the production of Portland cement clinker consumes a lot of energy and significantly impacts the environment. Producing 1 ton of clinker requires 1.7 tons of raw materials, which requires extensive extraction of raw materials and emits greenhouse gases and other gases into the atmosphere. Each ton of clinker produced emits approximately 850 kilograms of CO2. Therefore, volcanic ash and cementitious materials are important in concrete production. Nanotechnology is one of the most valuable and important modern technologies in various industries, including construction. The use of nanoparticles can give concrete new properties. It can enhance the mechanical and durability properties of concrete. Due to its volcanic ash reaction, silica nanoparticles form a denser microstructure in concrete, increasing its strength, reducing its water absorption rate, and improving its wear resistance and impact strength. In addition, TiO2 leads to the concrete having self-cleaning and anti-corrosion properties. Carbon nanotubes can be used as suitable reinforcing agents. In recent years, the use of nano SiO2 in concrete has been continuously increasing. Recent studies have shown that the use of nano SiO2 positively impacts the mechanical properties of concrete and cement mortar. In addition, the use of nano SiO2 with volcanic ash significantly improves the mechanical properties of concrete. Nano silicon powder Has a very good application prospect. The application of nano silicon powder One of the major biomedical applications of nano silica is as a vehicle for drug delivery via eye drops, intravenous injection, oral tablets, or pulmonary inhalation routes.

In textiles, nano silicon can reflect ultraviolet light, resist aging, increase weather resistance, increase strength, and other effects. After testing, it was found that the fiber contains nano silicon that can reflect 75% of 400nm wavelength ultraviolet radiation, and nano silicon below 100nm has antibacterial and deodorizing effects.

In epoxy resin, nanosilicon enhances the properties of acid and alkali resistance, chemical stability, high-temperature resistance, surface hardness, scratch resistance, waterproofing, insulation, etc. Adding less than 20% of nano silicon can double the product’s strength, reducing resin usage and production costs. In rubber silicone modification: Nano silicon is a product reinforcing agent specifically designed for rubber silicone modification. Because of pure rubber’s low performance, it is unsuitable for many scenarios and needs to be filled with modified nanosilicon to enhance its reinforcement performance. Controlling the amount of nano silicon used can increase properties such as hardness, temperature resistance, wear resistance, insulation, and dielectric properties. In coatings: Nano silicon micro powder increases substrate adhesion and film hardness in coatings, paints, primers, and topcoats, preventing surface warping, enhancing corrosion resistance, penetration resistance, self-cleaning, high-temperature resistance, waterproofing, UV resistance, scratch resistance, and other effects. After filling, it can be suspended in the paint film for a long time without affecting transparency, preventing the paint from turning yellow.

Ceramic field: In concrete and refractory materials, silicon micro powder is added to special refractory materials to form a multi-layer protective layer during oxidation, which has good mechanical properties and high-temperature oxidation resistance. After adding ultrafine silicon powder to special refractory materials, their flowability, sintering ability, bonding ability, and filling porosity performance are all improved to varying degrees, improving structural density and strength, reducing material wear rate, and enhancing corrosion resistance.

Supplier Luoyang Tongrun Nanotechnology Co, Ltd., as a global chemical material purveyor and manufacturer with over 12 years of experience, is highly trusted for providing high-quality chemicals and nanomaterials such as graphite powder, zinc sulfide, nitride powder, calcium nitride, Ca3N2, 3D printing powder, concrete foaming agent, etc. We usually transport our goods using DHL, TNT, UPS, and FedEx.You can choose T/T(USD), Western Union, Paypal, Credit card, Alipay, or Alibaba trade insurance for payment. Please inquire if you want to buy a high-quality 3D printing powder; we will help.

Landscape lighting transformers are crucial in creating a well-lit and safe outdoor environment. They convert the standard household voltage to a lower voltage suitable for landscape lighting fixtures, ensuring the efficient operation of the lighting system. This article will explore the working, types, and important considerations of landscape lighting transformers.

Working of Landscape Lighting Transformers

Landscape lighting transformers work on the same principle as other transformers, utilizing the principle of electromagnetic induction. When an alternating current (AC) passes through the primary winding of the transformer, it creates a varying magnetic field. This magnetic field induces a voltage in the secondary winding, converting the input voltage to a lower voltage suitable for landscape lighting fixtures.

Types of Landscape Lighting Transformers

Several types of landscape lighting transformers are available, each designed for specific applications and lighting requirements. Some common types include:

1. Line-powered Transformers:These transformers are connected directly to the main power supply and convert the household voltage to the desired low voltage. They are commonly used for low-voltage landscape lighting systems.
2. Solar-powered Transformers: These transformers are powered by solar panels and convert the solar energy to a low voltage for powering landscape lighting fixtures. They are suitable for off-grid or remote locations with limited access to the main power supply.
3. Battery-powered Transformers: These transformers are powered by batteries and convert the stored energy to a low voltage for landscape lighting fixtures. They are useful in areas without access to the main power supply and where solar panels or wind turbines are not feasible.

Important Considerations

Several factors must be considered when selecting or using landscape lighting transformers to ensure safe and efficient operation. Some important considerations include:

1. Voltage Ratings:The voltage rating of the transformer must be chosen based on the desired output voltage for the landscape lighting fixtures. Different fixtures may require different voltage ratings, so it is important to consult the manufacturer’s specifications.
2. Current Ratings: The current rating of the transformer should be chosen based on the maximum output current required to power all the landscape lighting fixtures. The transformer should handle the total load without overheating or tripping circuit breakers.
3. Efficiency: Highly efficient transformers help reduce energy losses and heat generation, prolonging their lifespan and reducing operating costs. Look for energy-efficient models that are ENERGY STAR-certified or equivalent.
4. Heat Management: Heat generated during operation can affect the performance and lifespan of the transformer. Proper heat dissipation measures should be taken, such as installing the transformer in a well-ventilated area or providing a heat sink.
5. Durability:Landscape lighting transformers are often exposed to harsh outdoor elements such as moisture, extreme temperatures, and debris. Choose a weather-resistant transformer that is suitable for outdoor use, ensuring long-term reliability.

High-quality Transformer Supplier

PDDN Photoelectron Technology Co., Ltd. focuses on the research, development, and application of power electronics technology and is devoted to supplying customers with high-quality transformers and other power products. Our company mainly has oil-immersed, low-voltage, dry-type, and other transformer types. The transformers provided by PDDN Photoelectron Technology Co., Ltd. have the characteristics of high efficiency, safety, and reliability and are widely used in power systems, industrial control, energy management, and other fields. It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. Please inquire if you want a high-quality transformer; we will help.    

You can use polyglyceryl-6-laurate to make facial cleansers, makeup removers and other cosmetics.

Aluminum nitride is a solid nitride with high thermal conductivity and a wide band gap of about six eV at room temperature, making it suitable for optoelectronic devices. In particular, its relatively large band gap makes it a promising candidate for group III-nitride-based LEDs spanning the UVA, UVB and UVC spectrum. However, the main obstacle to practical AlN LEDs has been the existence of extremely high densities of threading dislocations in both the Al-rich AlGaN and the p-AlN layers. This is due to the lattice mismatch between AlN and various available sapphire substrates, which results in a large magnesium (Mg) activation energy at room temperature.

By developing technology for high-purity AlN fabrication and the p-type and n-type doping technologies essential to LEDs, NTT has successfully produced low resistance AlN LEDs displaying strong band-edge electroluminescence at 210 nm (Fig. 3). The power output increases nearly linearly with the injection current density, showing excellent LED device reliability.

Moreover, NTT has also succeeded in increasing the maximum power level of a single-chip LED to 160 mW at 24 V bias. This represents a significant increase in light output, which will make AlN LEDs a viable alternative to traditional blue LEDs.

In addition to the superior performance and reliability, NTT’s new AlN substrate material has a number of attractive features such as a coefficient of thermal expansion that is close to Si’s, which is essential for high-power LED base plates. We expect that this will allow AlN to gradually replace traditional high-power LED substrate materials such as alumina and sapphire in HBLED, RF and power semiconductor applications.