TY - CONF A1 - Jansen, T. A1 - Jüstel, T. T1 - On the Temperature-Dependent External Photoluminescence Quantum Yield of Mg14Ge5O24:Mn4+ by Employing an Integrating Sphere T2 - Int. Conf. on Luminescence, Wroclaw, Poland Y1 - 2014 UR - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/16754 ER -