The demands for space solar cells are continuously increasing with the rapid development
of space technologies and complex space missions. The space solar cells are facing more …

We review recent progress towards increasing solar cell efficiencies beyond the Shockley‐
Queisser efficiency limit. Four main approaches are highlighted: multi‐junction cells …

Monolithic integration of III-V compound semiconductors on silicon is highly sought after for
high-speed, low-power-consumption silicon photonics and low-cost, light-weight …

GaInP/GaAs//Si solar cells with three active pn junctions were fabricated by surface activated
direct wafer bonding between GaAs and Si. The direct wafer bond is performed at room …

Solar cells are a promising renewable, carbon-free electric energy resource to address the
fossil fuel shortage and global warming. Energy conversion efficiencies around 40% have …

The ability to tailor compound semiconductors and to integrate them onto foreign substrates
can lead to superior or novel functionalities with a potential impact on various areas in …

Spectrolab has demonstrated a 2.2/1.7/1.4/1.05/0.73 eV 5J cell with an efficiency of 37.8%
under 1 sun AM1. 5G spectrum and 35.1% efficiency for 1 sun AM0. The top three junctions …

Multijunction (MJ) solar cells achieve very high efficiencies by effectively utilizing the entire
solar spectrum. Previously, we constructed a III‐V//Si MJ solar cell using the smart stack …

Multijunction (MJ) solar cells have attracted considerable attention as next‐generation solar
cells. III–V‐based MJ solar cells connected to heterogeneous cells, such as GaAs//Si and …

Solar energy harvesting for electricity production is regarded as a fully credible future energy
source: plentiful and without serious environmental concerns. The breakthrough for solar …