Belgian R&D and innovation hub Imec has reported a record 24.6% efficiency using a perovskite-based tandem copper indium gallium selenide (CIGS) solar cell. The new technology is expected to be commercially available in the second half of this year. The researchers added optical coupling of layers to the tandem stack, as well as optimising the transparent electrodes and the wide bandgap of 1.72eV. “The CIGS cell of 0.5cm² size has been made at the high-efficiency line at ZSW, employing all optimized processes necessary for the preparation of record devices,” the research institute said in its statement. It follows a 27.1% efficiency from the team's perovskite/silicon tandem cell, which was announced in July.
Belgian R&D and innovation hub Imec has reported a record 24.6% efficiency using a perovskite-based tandem copper indium gallium selenide (CIGS) solar cell. The new technology is expected to be commercially available in the second half of this year. The researchers added optical coupling of layers to the tandem stack, as well as optimising the transparent electrodes and the wide bandgap of 1.72eV. It follows a 27.1% efficiency from the team's perovskite/silicon tandem cell, which was announced in July.