The Helmholtz-Zentrum Dresden-Rossendorf (HZDR) is a Dresden-based research laboratory. It conducts research in three of the Helmholtz Association's areas: materials, health, and energy. Since 2011 HZDR is a member of the Helmholtz Association of German Research Centres.

We work at the interface between knowledge-based basic research and applied industrial research. Under the motto "Excellent Energy Research - Excellent Implementation", we realize complete innovation packages that build on synergies between generation, storage and efficiency measures.

For the cluster we  investigate organic semiconductors. Several phenomena in these semiconductors are related to the spin properties of triplet excitons and charge transfer states that are optically or electrically generated in device active layers and can influence the charge carrier generation and radiative recombination quantum efficiency.