Currently, III-V multijunction solar cells holds the highest efficiency. However, they are
expensive to produce and this prevents their large-scale use. For single GaAs solar cells …

Mesoporous Ge was generated by bipolar electrochemical etching of (100) Ge. Through
high-temperature annealing experiments, we found that the mesoporous Ge microstructure …

III–V solar cells are mainly grown on GaAs or Ge substrate, which significantly contributes to
the final cost and affects the sustainable use of these rare materials. A so‐called PEELER …

New massive markets for space multijunction solar cells are being discussed globally. For
such an explosive increase in demand to materialize, a more sustainable and affordable Ge …

Germanium (Ge) substrates are usually used for epitaxial growth of III-V materials but
represent a significant part of the cell total cost. The lift-off technique using porosification by …

Summary form only. III-V multi-junction solar cells on Ge substrate are widely used for space
PV applications. However, challenges related to weight and cost reduction are still …

Epitaxial thin film detachment and substrate reuse is one of the promising approaches to
reduce the weight and the cost of triple junction (3J) solar cells on Ge substrate for both …

Germanium is listed as a critical raw material, and for environmental and economic
sustainability reasons, strategies for lower consumption must be implemented. A promising …

We demonstrate a solar cell on reformed porous Ge with an efficiency of 7.7%. We generate
mesopores in (100) Ge by bipolar electrochemical etching and anneal them at high …

Germanium, a critical raw material, is used as a template for III-V epitaxial growth and as a
bottom cell in multi-junction solar cells. To reduce the amount of germanium used, a …