Berlin, Germany (SPX) Apr 15, 2020

Tandem cells combine two different semiconductors that convert different parts of the light spectrum into electrical energy. Metal-halide perovskite compounds mainly use the visible parts of the spectrum, while CIGS semiconductors convert rather the infrared light.

CIGS cells, which consist of copper, indium, gallium and selenium, can be deposited as thin-films with a total thickness of on