CIGS

Avancis has set a new world record for a copper, indium, gallium, and selenium (CIGS) solar panel with an integrated series connection of 30 cm x 30 cm, achieving an efficiency of 20.3%. The German manufacturer’s accomplishment has been validated by the US National Renewable Energy Laboratory.

The perovskite solar race is heating up, with a cue of manufacturers forming to test products at the US Department of Energy’s (DoE) PV commercialization facilities, and academics on both sides of The Pond announcing new advances in recent months.

First Solar has agreed to pay $38 million to buy Swedish manufacturing startup Evolar AB, as it seeks to expand development of high-efficiency tandem PV tech.

The future outlook for copper indium gallium selenide (CIGS) solar cells is bright, due to recent R&D achievements and efficiency gains, according to Ayodhya Tiwari, head of laboratory at Switzerland’s Federal Laboratories for Materials Science and Technology (EMPA). CIGS has already shown its value in building-integrated PV applications, but as production volumes increase in the years ahead, ground-mount plants and big utility-scale installations could also become feasible, says Tiwari.

German scientists have built a tandem perovskite-CIGS panel measuring 9 square centimeters, with organometallic perovskites for the top module.

Japanese scientists have described the steps that need to be taken to improve the average efficiency of CIGS solar modules, from around 18.5% at present to more than 20%. They presented all of the critical technical factors that are currently holding the tech back from broader market adoption.

Swiss scientists have built a 4T tandem perovskite/CIGS mini-panel with a geometric fill factor of over 93%. It combines a 10.8%-efficient mini perovskite module and a 15.1%-efficient CIGS device.

Scientists in Japan have developed new processes for CIGS solar cell manufacturing, entirely eliminating the use of cadmium and replacing a waste-intensive wet chemical stage. With a thin film deposited on a flexible steel substrate, the group achieved 16.7% efficiency, which it says is a record for a cell of this type produced using scalable fabrication processes.

Swedish business Evolar is working on a bolt-on piece of production equipment which would upgrade the cell lines of conventional manufacturers with a perovskite lift in performance.

The factory will be built with the financial support of the Italian government. It will mostly serve southern European markets.