Marktech Releases Higher Power UV LEDs for Disinfection, Curing, and Sensing — Now Covering 230 to 400 nm

Marktech Optoelectronics (“Marktech”), a leader in advanced UV LED and ultraviolet LED emitter technologies, today announced an expanded portfolio of high-power UV LED light sources with new UV emitters spanning 230 nm to 400 nm. These devices strengthen Marktech’s offerings across the ultraviolet light spectrum - from deep-UV LED (DUV LED, far UVC LED) sterilization wavelengths to longer UVB and UVA wavelengths for curing, phototherapy, and forensics. 

These next-generation emitters meet the growing demand for UV sanitizing light, germicidal UV light (UVGI light), UV curing light, LED light curing, deep UV sterilization, phototherapy (psoriasis, eczema, vitiligo, and acne treatment), PUVA therapy (enhanced UVA phototherapy using psoralens light-sensitizing compound), fluorescence excitation, spectroscopy, 3D-printing resins, water quality monitoring, medical UV light, UV water disinfection, and precision sensing applications.

The updated UV product family adds new deep UV (230 nm and 265 nm), UVB (310 nm), and UVA (340 nm) parts while maintaining Marktech’s hallmark of reliability and precision. Each device is engineered for high output and narrow spectral bandwidths. Custom multi-chip configurations, matched emitter-- detector pairs, and starboard versions are available.

In late 2025, we announced the release of new UVA (365 nm, 395 nm) and Near UV (405 nm) LEDs – see Optrans and Marktech Optoelectronics Release New UVA (365 nm, 395 nm) and Near UV (405 nm) LEDs.

High-Power 280 nm LEDs from our newest partner, NKFG Corportion, will be available soon in single- and four-chip versions, in SMD and SMD-scaled chip-on-substrate (COS) formats. Marktech and our partners continue to innovate and expand our UV LED offerings into the far-UVC spectral range for sensing, chemical analysis, and ultraviolet germicidal irradiation (UVGI) applications.

The updated product family includes UV LED chips or UV LED dies in a variety of packages:

• Metal-can UV LEDs (UVC LEDs, UVB LEDs, high-power UVA LEDs)
• SMD UV LEDs, including our proprietary hermetic ATLAS SMD package
• Chip-on-board or COB UV LEDs
• 5 mm and 3 mm molded through-hole UVA LEDs (> 350 nm)
• Compact, low-profile transfer-molded UVA LEDs (> 350 nm) (Coming in 2026)

Note: Note that all wavelengths are available off-the-shelf in all package types, but custom packages can be developed to meet your OEM design needs.

The range of wavelengths in Marktech’s expanded UV LED lineup now includes:
405 nm (near UV), 400 nm, 395 nm, 385 nm, 375 nm, 370 nm, 365 nm, 355 nm, 340 nm, 325 nm, 310 nm, 295 nm, 285 nm, 275 nm, 265 nm, 235 nm, 255 nm

Applications Across Multiple Markets (with Peak Wavelength Guidance)

• Medical & laboratory disinfection equipment (230–280 nm, 315-400 nm) – Ultraviolet germicidal irradiation for surface, instrument, and airborne sterilization. the optimum UVC LED peak for destroying a pathogenic microbe can vary depend on the specific family and species of pathogen (live bacteria, fungi, protozoa, virus, and dormant spores), the lifetime and degradation of UVC LED output over time, and the transmission through or absorption by the microbes and media containing the microbial mass.
  • 255 nm and 235 nm UVC LEDs – Wound disinfection at 235 nm looks promising for healing recalcitrant or chronic wounds when an infection or bacterial biofilm inhibits normal healing. Ultraviolet wavelengths below approximately 240 nm cause less damage to human tissue (skin and eyes) than 265 nm and 280 nm, but further studies are needed to confirm this. Also, the lower power output and lifetime of UV LEDs below 240 nm limit sanitization effectiveness. Marktech is addressing some of these issues with new 2X-higher-power ∼230 nm UVC LED chips compared to earlier products. In addition, we have manufactured deep UVC LEDs with multiple 235 nm chips in a single package to increase power output further.
  • 265 nm is the absorption peak for DNA, and destruction of DNA is typically seen as the best way to inactivate or kill pathogens, as long as the power output is sufficient, and can be maintained over the lifetime of the product. In addition, the
  • 280 nm is the absorption peak for protein, which provides another route for destroying harmful microbes. While not as effective as 265 nm or smaller UVC LED wavelengths in a head-to-head comparison at the same power output and transmission rates, many manufacturers are moving toward UVGI systems using 280nm UVC LEDs due to the higher power output and wall plug efficiency (WPE) media
  • Multiple UV Peak Wavelength Combinations – The 265 nm+280 nm and the 230 nm+265 nm+280 nm peak UV wavelength combinations could potentially provide even higher effectiveness than using a single peak wavelength UVC LED. Multiple-wavelength UVC light can exhibit synergistic effects, leading to faster inactivation and greater energy efficiency. Marktech can package multiple UV LEDs with different peak wavelengths in a single package. For instance, we could custom package four 230 nm UVC LEDs with one 265 nm UVC LED and one 280 nm UVC LED. A 265 nm+280 nm LED with addressable chips is useful device for DNA purity analysis.
  • 315 to 400 nm UVA LEDs combined with a titanium dioxide (TiO₂, titania) photocatalyst can be used to generate highly reactive oxygen (ROS) with the ability to eradicate microorganisms. Another disinfecting gas, ozone, can be generated using deep UVC wavelengths at 200 nm or shorter. Ozone, ROS, and ethylene are effective for disinfecting surgical instruments and medical devices, but they are also toxic to humans.
• Phototherapy or photobiomodulation –
  • 310 nm UV light exposure is commonly used to phototherapy for psoriasis, eczema, vitiligo, and acne treatment.
  • 365 nm psoralen UVA (PUVA) therapy (enhanced UVA phototherapy using psoralen light-sensitizing compound). 8-methoxypsoralen (8-MOP) interacts with DNA enhancing UVA light absorption.
• Water & air treatment (230–280 nm) – UV-C wavelengths optimized for microbial and viral inactivation.

• 3D printing & photopolymer curing (365 nm) – UV-A curing for resins, coatings and adhesives.
• Fluorescence, spectroscopy & chemical sensing (250–405 nm) – 260–280 nm for protein/nucleic-acid excitation; 310–340 nm for aromatic compounds and minerals; 340–365 nm for scattering-based detection. By comparing the absorption at 265 nm to the adsorption at 280 nm the level of protein remaining in a DNA sample can be assessed. Dual addressable 265 nm+280 nm LEDs with additional optical filters can be helpful measuring protein or DNA purity.
• Water quality analysis – Water quality instruments leverage several deep UVC wavelengths for chemical oxygen demand (COD), dissolved organic matter (DOM), biological oxygen demand (BOD), and total organic carbon (TOC).
• NDT inspection & UV-A illumination (340–370 nm, typically 365 nm) – Industry-standard wavelengths (∼365 nm) for penetrant inspection, forensic analysis, leak detection, and QA/QC.
• Security marking & authentication (340–405 nm) – Covert UV-reactive inks and anti-counterfeiting materials in currency, documents, and critical products.
• Forensics (300–405 nm, mainly 365 nm & 395 nm, 255 nm for RUVIS) – 365 nm UVA LED light sources are typically employed to detect biologicals and trace evidence such as blood, hair, semen, latent prints, and urine. 395 to 425 (near-UV to blue) peak wavelength LEDs are helpful in document examination and the identification of specific fibers. Reflected Ultraviolet Imaging Systems (RUVISs) illuminate surfaces with 255 nm or 254 nm light to reveal latent fingerprints, often without the need for powders or chemicals such as cyanoacrylate fumes. RUVIS can also reveal hidden bruises, especially on dark skin, by exploiting differences in light absorption/reflection from blood pigments.

Product Table – Peak Wavelengths, Power, and Viewing Angle. Datasheets & Buy Now Links

Note: For starboard (“S”) versions, the electrical and optical characteristics are identical to their base part numbers. The star-board option provides UV LEDs pre-mounted on a metal-cored PCB for faster evaluation and easier integration into prototype designs. This eliminates the need for a design engineer or electronics designer to develop and build a custom circuit board.

High Reliability Design

Marktech’s new emitters combine advanced semiconductor materials with optimized thermal paths and durable package designs. In the deep-UV MTE2550/MTE2650 series, peak wavelengths of 255 nm and 265 nm are achieved with narrow spectral bandwidths and sealed metal-can packages. The MTSM310UV series features a ceramic surface-mount design with low thermal resistance and a peak emission at 310 nm, making it suitable for biochemical sensing and phototherapy applications. The MTSM340UV family delivers higher radiant flux at 340 nm in compact 3.5 × 3.5 mm SMD packages and is available in both base and star-board formats.

All devices are rated for high reliability and extended lifetime under continuous drive. Custom wavelength selections, multi-chip arrays, and emitter–detector matched pairs are available on request.

UVC Safety and Compliance for OEMs

Using UVC as a “cure-all sanitizer” without accounting for efficacy, safety standards, exposure limits, regulatory constraints, and proper engineering controls is risky. Any UVC-based product, whether for air disinfection, surface sterilization, water purification, medical device sanitization, or OEM integration, must therefore be carefully specified, tested and labelled to ensure both efficacy and compliance with safety standards.