Materials

Our team of technicians, physicists, and chemists is researching and developing new color-converting materials for the solid-state lighting market that increase light output and quality while reducing production costs and environmental impact.

More about our Materials team

Our team researches in the field of solid state lighting. Solid state lighting is transforming general illumination with the promise of dramatic energy savings through widespread adoption. In order to maximally realize such benefits, lighting technology must also address human centric aspects such as light quality and color rendering as well as the environmental impacts of the chosen solutions.

Spectral engineering is a very promising way to further increase the efficiency of warm white light emitting diodes (LEDs) while maintaining high color rendering, as well as add specific colors to the spectrum for more specialized applications. Line-emitters are especially interesting, due to their extremely narrow lines which can be tuned over almost the entire ultra-violet, visible and infra-red spectrum by choosing the right host-lattice and emitter ion.

Our Technology

At Seaborough we focus on bringing these ionic line-emitters into solid state lighting applications. The main challenge is to solve the weak absorption in the blue spectral range, which is crucial for LED applications where the phosphors are typically pumped by a blue LED. Our technology is focused around inter-particle energy transfer at the nanoscale, where one kind of particle is used to absorb the light, which then transfers the absorbed energy to a second emitter particle. This way excitation and emission events get largely decoupled, enabling an almost independent choice of excitation and emission spectra, and a brand new way to engineer luminescent materials, or phosphors.

Currently, we are focusing our work around blue-excitable Eu3+ as line-emitter for warm white LEDs. However, our technology could in principle be used to sensitize many other line-emitters as well.

Our Team and Facilities

Our in-house team includes  scientists, engineers and technicians in the fields of optics, inorganic and nanomaterials chemistry, and luminescent (nano)materials. We have in-house (nano)particle synthesis and optical characterization lab capabilities, as well as external access to advanced equipment such as electron microscope facilities. Due to the fundamental nature of the projects we often team up with world-leading university groups, and also have strong connections and collaborations with industrial partners to advance our projects towards scale-up and commercialization.

Public Funding

Our “EuroLED” program has been granted a Horizon 2020 Eurostars subsidy under the grant number EUROSTAR.2018.34. We have also several projects running in collaboration with the group of Prof. Andries Meijerink from Utrecht University which are supported by the Dutch Research Organisation NWO.

Recent publications

Eu3+ Sensitization via Nonradiative Interparticle Energy Transfer Using Inorganic Nanoparticles

J. Phys. Chem. Lett. 2020, 11, XXX, 689-695

Read the publication here

LED Phosphors under High Driving Conditions

Phosphor Global Summit 2019, San Diego

Read the publication here

Increasing the effective absorption of Eu3+-doped luminescent materials towards practical light emitting diodes for illumination applications

Appl. Phys. Lett. 112, 132101 (2018)

Read the publication here

Partners & Public Funding Agencies

Team

Marie Anne van de Haar

Anne Berends

Mike Krames

Mohamed Tachikirt

Valerio Favale