COPPER INDIUM GALLIUM SELENIDE THIN FILM
A copper indium gallium selenide solar cell or CIGS cell uses an absorber made of copper, indium, gallium, selenide , while gallium-free variants of the semmiconductor material are abbreviated CIS. It is one of three mainstream thin-film technologies, the other two being cadmium telluride and amorphous silicon, with a lab-efficiency above 20 percent and a share of 2 percent in the overall PV market in 2013.
In 2008, IBM and Tokyo Ohka Kogyo Co., Ltd. announced they had developed a new, non-vacuum, solution-based manufacturing process for CIGS cells and are aiming for efficiencies of 15% and beyond.As of September 2014, current conversion efficiency record for a laboratory CIGS cell stands at 21.7%.
CIGS thin film solar panels are made up from CIGS cells. copper indium gallium selenide solar cell is a thin film solar cells used are manufactured by depositing a thin layer of copper, indium,gallium and selenide on glass or plastic backing, along with electrodes on the front and back to collect current. Because the material has a high absorption coefficient and strongly absorbs sunlight, a much thinner film is required than of other semiconductor materials. CIGS thin film solar panels cost to performance ratio is weak which limits it higher use.
Higest CIGS thin film solar panel efficiency is registered around 20.9%.many energy laboratory confirmed 13.8% module efficiency of a large-area production panel, and 13% total-area and 14.2% aperture-area efficiency with some production modules. CIGS thin film solar panel lifespan is comparatively very low then crystalline solar panel and ranges around 12 years.