Low-power light upconversion

Making the most of Light

Light upconversion whereby photons of low energy are converted into (fewer) photons of high energy is an attractive feat for a slew of applications in energy, displays or even bio-imaging. While such conversion schemes typically rely on high power lasers, low-power light upconversion (a.k.a. light upconversion by triplet-triplet annihilation) is a particularly attractive method in that its intricate photophysical cascade of events allows for the utilization of non-coherent light with low-power density (e.g. with solar irradiance). In the group, we develop new pathways to generate light upconversion in solid (polymeric) materials by tuning precisely the structure and the location of the emitters and sensitizers.