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What Materials Are Used In UV Led Chip


As we all know, ultraviolet light-emitting diodes are semiconductors that emit light at a specific wavelength when the light passes through them. LEDs are known as solid-state devices. Most companies manufacture UV-based LED chips for industrial processes, medical instruments, sterilization and disinfectant devices, document verification devices, and more. It is because of their substrate and active material. It makes LEDs transparent, available at a lower cost, adjusts the voltage, and reduces the light output power for optimum usage.

This comprehensive guide will walk you through the material used, compare benefits, and explains how to choose the right LED chip.

Core Materials Used In UV LEDs

The core materials used for manufacturing the ultraviolet LED chip are divided into substrates and active materials. The following three core materials are prominently used to manufacture the chips.

1. Aluminum Nitride

This core material uses UWBG or Ultra-Wide Bandgap Technology. This deep material emits light in the ultraviolet range, and materials such as gallium nitride and silicon carbide are used alongside it to maximize energy efficiency.

This material works at a wavelength below 315nm. The Aluminum Nitride chips help with optimum thermal performance and improving electrical output in the LED devices. AIN or aluminum nitride replaces the BeO or beryllium oxide because it contains no health hazards. It can stand higher temperatures and is seamless for electrical applications and other devices.

2. AlGaN Alloys

This alloy is an amalgamation of Aluminum, Gallium, and Nitrogen, providing a wavelength of up to 400nm. This alloy used for UV LED chips majorly uses the UV-A module. This alloy material combined has a wide spectral length that emits ultraviolet light, making it suitable for medical devices, sensors, air and water disinfection, sterilization, etc. It also helps in improving the performance of the devices.

Due to the physico-chemical properties of AIGaN, significant progress has been achieved in optimizing chip manufacturing. It is a high-quality material that improves the efficiency of UV LED devices. They are even used for manufacturing eco-friendly, smart, and sustainable chips.

3. Substrate

This core material is the chips’ foundation, strength, and support. The most important substrate used for UV LEDs is Sapphire. It is transparent, has a wider availability, and is available at a low cost. Apart from these features, the Sapphire substrate has many other advantages, such as its high-quality, mature material is present, its ability to withstand higher temperatures, ease of cleaning, and strong mechanical strength.

Moreover, the Saphire substrate in the chips meets the rising demands of the curing market. The safety and energy-saving features make this substrate the best for LED use. Good wavelength transmission helps widely with the proper electrical supply and transmission of light throughout the chip.

A Quick Comparison Of All Core Materials

These three materials offer various advantages when used in UV chips. Industries, medical healthcare institutions, residents, offices, etc., can use the devices made of these core materials chips and reap versatile benefits.


Basis of Difference

Aluminum Nitride




It is not that transparent but a potent ultra-wide gap material.

 Not transparent like the substrate used in LED chips.

This is a highly transparent material emitting ultraviolet wavelength.


It efficiently delivers the UV light material using deep emission.

This material can be efficiently used in LEDs and across various spectrums.  

It possesses exceptional electrical insulation, which improves the LED chip’s efficiency.

Thermal   Conductivity

The thermal conductivity is higher providing no health hazard.

It has eco-friendly and seamless thermal conductivity that helps improve the performance of LED chips.

This material has a good thermal conductivity and properties.


The material is competitively priced.

Affordably priced material.

Low-cost material with a wider availability


Works below the wavelength of 315nm.

It works between the wavelengths of 315nm and 400 nm.

Works perfectly in less than 200nm. However, it uses the UV-C module, for which you require safety gear when using the substrate for chip manufacturing.


It improves the crystalline product quality and facilitates the flexibility of the LEDs.

This material is very flexible, and its thickness is less, making it compatible with the chip’s manufacturing.

It is flexible and can be printed seamlessly on the chip. 

How to Choose A UV LED Chip for Your Application?

· Performance: When choosing a UV LED, ensure it efficiently performs by releasing the ultraviolet wavelength suitable for the particular work. It can be curing or sterilization of your place. You must check out the chip’s performance by picking the right voltage. Do check the longevity and suitability of the UV LED chip for a particular job. It will help maintain the quality, enhance performance, and maintain consistency of the LED for a longer period.

· Wavelength: Most wavelengths work between 200nm and 400nm. Opt for the chip with the right wavelength so it works with the correct intensity to emit the spectrum that works best with devices. The most useful wavelength for the LEDs is between 365nm and 395nm. It is safe and has less radiation amount, too.

· Cost-Effective: Most industries run on a budget and look forward to cost-effective LED chips. Therefore, choose the chip that fits your work usage well. You can use it for curing resin or ink, water and air sterilization, disinfecting hospitals, or criminal investigation.

· Light Output: The light output profile of the UV-A, UV-B, and UV-C modules must be checked. You must select the UV LEDs according to their light output, which can be mild, medium, or highly intense. If you need the UV LED chip for curing, you might require something with mild LOP.


The UV-LED chips minimize the downside risks and ensure ROI on your devices. You can get high-quality products from Tianhui, the leading manufacturer of chips. Our products are perfect for sterilization and disinfection; you can use them for curing. We use cutting-edge technology to innovate and manufacture our products. If you are looking for the best UV LED chip in the region, contact our experts with your concerns. We will tailor our solutions to your unique commercial or medical needs.

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