Schedule 4 4:00 PM - 4:15 PM [OWPT-2-02] GaAs multi-junction photovoltaic power converters at AZUR SPACE: current status and development activities *Gregor Keller1, Daniel Fuhrmann1, Thorsten Wierzkowski1, Anne Kristin Volk1, Clemens Wächter1, Victor Khorenko1 (1. AZUR SPACE Solar Power GmbH)