Overview of Engineered Germanium Substrate Development for Affordable Large-Volume Multi-Junction Solar Cells | IEEE Conference Publication | IEEE Xplore

Overview of Engineered Germanium Substrate Development for Affordable Large-Volume Multi-Junction Solar Cells


Abstract:

New massive markets for space multi-junction solar cells are being discussed globally. For such an explosive increase in demand to materialize, a more sustainable and aff...Show More

Abstract:

New massive markets for space multi-junction solar cells are being discussed globally. For such an explosive increase in demand to materialize, a more sustainable and affordable Ge substrate technology is required. To this end, lithography-based Ge-on-Nothing and electrochemical process-based porous Ge wafers were developed. Both approaches yield uniform and smooth monocrystalline Ge-on-Ge engineered substrates after annealing, of which the top layer is weakly attached to the mother substrate. High-quality space solar cells were grown on them, followed by successful foil detachment and surface reconditioning. These results clearly demonstrate the feasibility of the reusable Ge substrate concept.
Date of Conference: 11-16 June 2023
Date Added to IEEE Xplore: 25 December 2023
ISBN Information:
Conference Location: San Juan, PR, USA

Contact IEEE to Subscribe