October 16, 2021



Fraunhofer ISE reports record 68.9% efficiency for GaAs thin-film PV cell under laser light

In addition to the classical applications for solar cells on roofs and open spaces, photovoltaic devices can also be used with laser light for efficient power transmission. At the 48th IEEE Photovoltaic Specialists Conference, researchers from the Fraunhofer Institute for Solar Energy Systems ISE of Freiburg, Germany presented how they were able to achieve a record conversion efficiency of 68.9% with a photovoltaic cell under monochromatic laser light. For this, the team used a very thin photovoltaic cell based on gallium arsenide (GaAs) and applied a highly reflective, conductive mirror on its backside…