As we approach the temporary shutdown for the SLS 2.0 upgrade this autumn, PSI beamline scientist Grigory Smolentsev looks back on 22 years of scientific excellence at SLS using time-resolved measurements to study functional materials in action. The SLS was instrumental in solving the mystery of how copper-based organic LEDs work on the nanosecond timescale. Knowledge of how this process works will help to develop more efficient and cheaper materials for large area lighting. What science did the SLS make possible for you? Join us in honouring the past 22 years of scientific and technical excellence by sharing these with #ThankYouSLS! More about the SLS 2.0 upgrade project ► https://www.psi.ch/en/media/sls-20-upgrade More about organic light-emitting diodes (OLEDs) ► https://www.psi.ch/en/media/our-research/in-search-of-the-lighting-material-of-the-future #UpgradingSLS #SLS2.0 #LightSourceScience #WorldChangingScience #SynchrotronScience #ScienceForSociety #ScienceNeverStops