On the way to more eco-friendly quantum dot displays

11.08.2026

How optical emission builds up in I-III-VI quantum dots 

Bright quantum dots are key materials for next-generation display technologies. However, many established quantum-dot systems contain toxic heavy metals such as cadmium or lead. I-III-VI quantum dots offer a promising and more environmentally friendly alternative, but the physical processes remain insufficiently understood. We synthesize bright free-exciton-emitting AgInS₂ quantum dots. Their characteristic band structure induces unique carrier relaxation paths, which we have investigated in this paper. We find comparatively long relaxation and recombination times as well as important size dependencies.

For more details, have a look at our article in Physical Review B: "Confinement-Dependent Exciton and Biexciton Dynamics in Bright Bandgap-Emitting AgInS₂ Quantum Dots" by J. Mann, J. Kunze, N. Pan, E. Kostyurina, M. Döblinger, B. Nickel, J. Feldmann, S. Ghimire.