Seoul Semiconductor Sees Significant Demand from Horticultural Lighting Customers in Multispectral UV & Visible LEDs for Boosting Potency in Medicinal Crops, Combating Plant Diseases

Oct. 4, 2018

PORTLAND, OR (October 3, 2018) – Seoul Semiconductor, a global innovator of LED products and technology, and the first LED manufacturer to deliver a complete spectrum of solid state light sources used for growing plants from ultraviolet (UV-C) to far-red, is experiencing a surge of interest in their Horticultural Series LEDs in COB, mid-power, and high-power packages.

“One of the areas where we have seen significant interest from our horticultural lighting customers in the last six months is the installation of supplemental UV LED lighting to boost production of cannabinoids in medicinal crops,” explained Dr. Peter Barber, product marketing manager for Seoul VioSys, the UV division of Seoul Semiconductor. “By using targeted wavelengths of UV lighting during specific parts of the grow cycle, growers are able to get increased cannabinoid and terpenoid production from less expensive plants, boosting them to potency levels equivalent to those found in higher cost crop strains.”

Cannabinoids, specifically tetrahydrocannabinol (THC) and cannabidiol (CBD) are the active ingredients that are used in medicinal products made from cannabis plants. Terpenoids are naturally-occurring molecular compounds found in virtually all plants, and are responsible for enhancing the flavors and fragrances derived from a variety of crops.

“Another application area that growers are investigating is the use of UV-C LED lighting to combat powdery mold in strawberry, cucumber, and hemp growing operations,” Dr. Barber continued. “Applying low-dose, short duration pulses of UV-C light timed with periods of darkness has been shown promise as a method to reduce fruit and crop disease.”

Seoul Semiconductor is the VIP Sponsor of the 2018 Horticultural Lighting Conference, to be held on October 9, 2018 in Portland, OR, where growers, lighting manufacturers, and horticultural experts will gather to learn about the latest science and technology to enable year-round crop production.

Seoul Semiconductor introduced its Horticultural Series LEDs at the 2017 Horticultural Lighting Conference in Denver, CO. These horticultural-optimized LEDs span the light spectrum from multiple ultraviolet bands (UV-A, UV-B & UV-C), as well as into far-red bands (~700nm to 800nm), providing horticultural lighting designers with the capability to develop a wide range of light sources to enhance the growth and propagation of different types of vegetables and plants in indoor settings. [A complete description of Seoul’s Horticultural Series LEDs follows this release.]

The SunLike Series LED technology, which delivers a light source close to the spectrum of natural sunlight, is part of the Horticultural Series LEDs, providing lighting designers with more options as they develop horticultural-specific lighting systems. The SunLike Series natural spectrum LEDs are an advanced light source that combine the latest optical and compound semiconductor technology of Seoul Semiconductor with Toshiba Materials’ TRI-R technology. TRI-R technology, supported by Toshiba Materials, defines its original concept as “the light closest to the sun for human wellbeing.” TRI-R technology enables the spectrum of natural sunlight to be reproduced by a white LED light source technology.

About the 2018 Horticultural Lighting Conference
Sponsored by LED market research firm Strategies Unlimited and Pennwell publications LEDs Magazine, and Lux Review, the Horticultural Lighting Conference USA was held at the Denver Marriott City Center in Portland, OR on October 9, 2018. A full-day symposium focused on exploring the future of farming with technologies and innovations enabling year-round sustainable fruit, vegetable and flower cultivation, the conference connects research and technology to end-user applications through exclusive presentations by thought leaders, invited speakers, interactive sessions, and networking opportunities to provide key insights into latest technologies and techniques impacting the advancement of plant growth stimulation in controlled environments..

For more information, please visit:

About Seoul Semiconductor
Seoul Semiconductor develops and commercializes light emitting diodes (LEDs) for automotive, general illumination, specialty lighting, and backlighting markets. As the fourth-largest LED manufacturer globally, Seoul Semiconductor holds more than 12,000 patents, offers a wide range of technologies, and mass produces innovative LED products such as SunLike – delivering the world’s best light quality in a next-generation LED enabling human-centric lighting optimized for circadian rhythms; WICOP – a simpler structured package-free LED which provides market leading color uniformity and cost savings at the fixture level, providing high lumen density and design flexibility; NanoDriver Series – the world’s smallest 24W DC LED drivers; Acrich, the world's first high-voltage AC-driven LED technology developed in 2005, including all AC LED-related technologies from chip to module and circuit fabrication, as well as multi-junction technology (MJT); and nPola, a new LED product based on GaN-substrate technology that achieves more than ten times the output of conventional LEDs. UCD constitutes a high color gamut display which delivers more than 90% NTSC. To learn more, visit

Seoul Semiconductor Inc.
North America

Andrew Smith
Tel: +1 (901) 831-6614
Email: [email protected]

Asia and Europe
Jeonghee Kim
Tel: +82-70-4391-8555
Email: [email protected]

Complete listing of Seoul Semiconductor Horticultural Series LEDs

SunLike Series Chip-on-Board (COB) LEDs
For lighting fixtures designed to produce light that closely matches the spectrum of natural sunlight, Seoul offers a range of standard COB LED modules ranging from 6W to 25W.

High Power Horticultural Series LEDs include UV, white, and color devices
For high-bay and other lighting fixtures, Seoul’s Horticultural Series LEDs include the following options:

UV-C –
Producing dominant wavelength of 275nm, these un-lensed UV LEDs can be used for sterilization.
UV-B –
Producing dominant wavelength between 280 - 310nm, these un-lensed UV LEDs are rated at 10mW with a photosynthetic photon flux (PPF) value of 0.25µmols/s.
UV-A –
Producing dominant wavelength between 360 - 400nm, these lensed UV LEDs are rated at 636mW with a PPF value of 2.2µmols/s.

Deep Blue – Featuring a dominant wavelength of 449 - 461nm, these deep blue dome-lensed LEDs are rated at 650mW with a PPF of 2.6µmols/s.
Deep Red –
With a dominant wavelength of 646 – 665nm, these visible red LEDs are rated at 345mW with a PPF of 2.32µmols/s.
Far-Red –
Producing a dominant wavelength of ~730nm (peak), these near-infrared LEDs are rated at 260mW with a PPF of 1.64µmols/s.
White –
These high-power white LEDs feature a light output of 168lm with a PPF of 2.4µmols/s.

Mid Power Horticultural Series LEDs include SunLike natural spectrum LEDs & color devices
For vertical rack systems and other close-up lighting fixtures, Seoul’s Horticultural Series LEDs include the following mid-power options in standard 3030 packages:
SunLike 5000K –
With a color temperature ranging from 2700K – 5000K, these LEDs produce light that closely matches the spectrum of natural sunlight, and feature a light output of 22.3lm with a PPF of 0.38µmols/s.
Deep Blue –
Featuring a dominant wavelength of 449 - 461nm, these blue mid-power LEDs are rated at 155mW with a PPF of 0.62µmols/s.
Deep-Red –
With a dominant wavelength of 646 – 665nm, these visible red LEDs have a PPF of 0.43µmols/s, and a light output of 77lm/mW.
Far-Red –
Producing a dominant wavelength of ~730nm (peak), these near-infrared mid-power LEDs are rated at 50mW with a PPF of 0.38µmols/s.