What are CIGS thin-film solar panels?
Copper Indium Gallium Selenide=CIGS.
The CIGS thin-film solar panel is a variety of thin-film modules using(CIGS) as the main semiconductor material for the absorber layer. This technology is popular for utility-scale installations, Building-Integrated Photovoltaics (BIPV), PV rooftops, flexible thin-film solar panels, and more.
CIGS based solar cells are currently the most efficient thin film systems for photovoltaic applications.
The main challenges of commercial CIGS cells are related to their high cost and to the low deposition rates achieved in the physical vapour deposition techniques .
(CIGS) is a highly stable, high performance, and mature thin film PV technology. The CIGS semiconductor composition has not been substantially altered since 1986.
As of 2019, CIGS cell efficiencies have surpassed all other thin film PV technologies, achieving 23.35% on the cell and 17.5% on the module level
CIGS has also ultra-high efficiency tandem cells, with the potential to achieve 30% efficiency.
Producing Perovskite/CIGS tandem cells and there is significant potential for future efficiency development through band-gap tuning in such applications.
(Essay fron About CIGS – CIGS Thin-Film Photovoltaics (cigs-pv.net)