New light sources
Research on new sources focuses primarily on Solid-State Lighting, especially LEDs and OLEDs (Organic LEDs).
LEDs have gone through an enormous evolution during the last decade and became a mature and competitive light source. Today a lot of research is still going on to improve the technology and to expand the field of application.
At this moment, OLEDs undergo the same evolution LEDs have experienced in the near past. Performance and lifetime have evolved to a level that almost allows practical application. Simultaneously, bigger production lines are being established, making production cost decrease. As a result, OLEDs will become a competitive light source within a few years. The strengths of OLEDs are their unique properties: OLEDs are extremely thin light emitting surfaces that in addition can be made flexible and/or transparent. This creates design possibilities no other light source can offer.
The Light and Lighting Laboratory continuously monitors these developments, by doing a market follow-up on the one hand, and by characterizing the optical and electrical properties of these new light sources.
Within the context of this area of research several PhD studies have been started:
- "Modelling and evaluation of high-power light-emitting diodes for general lighting" by Arno Keppens (finished in 2010)
- "Characterization and optimization of remote phosphor LEDs" by Paula Acuña (started 2012)
Research on this topic is also performed within several R&D projects:
- Groen Licht Vlaanderen 2020
- iOLED: integration of OLED technology in general indoor lighting