11.2% Efficient Germanium TPV Cells Measured Under High-Temperature Irradiance Conditions - VILLA MORALES, JUAN; GARCIA-LINARES FONTES, PABLO; MEDRANO GOMEZ, ALVARO MANUEL; CAÑIZO NADAL, CARLOS DEL; DATAS MEDINA, ALEJANDRO (Proceedings of 2025 15th Spanish Conference on Electron Devices (CDE), 2025)