Germanium

Japanese scientists have developed a heterojunction germanium solar cell with the biggest area ever achieved for the tech. It has an open-circuit voltage of 291 mV, a short-circuit current of 45.0 mA/cm2, and a fill factor of 0.656.

The European Commission has published its second annual assessment of the competitiveness of the EU’s renewable energy technology industries, and it had a warning for policymakers about the trade balance trend being experienced by heat pump makers.

German scientists have fabricated an enhanced amorphous germanium PV cell that confines light in an ultra-thin absorber. It has the potential to combine PV with photosynthesis in new solar applications on bio-reactors, greenhouses, and agricultural land.

A team tasked by the European Commission with estimating the raw material requirements of the European energy transition found if global PV roll-out is high, and the component requirements of certain solar technologies don’t improve by a greater margin, some elements could end up in short supply.

Researchers from Canada have unveiled a new germanium deposition process which is said to eliminate threading dislocations and be significantly cheaper than previous approaches. The scientists say their technique creates nanovoids on the surface of the germanium layer which can attract and annihilate undesirable dislocations.