Thin-Film Solar Cells: New Insights into the Indium/Gallium Puzzle

Scientists at Johannes Gutenberg University Mainz (JGU, Germany) have made a major breakthrough in their search for more efficient thin-film solar cells. Computer simulations designed to investigate the so-called indium/gallium puzzle have highlighted a new way of increasing the efficiency of CIGS thin-film solar cells. It has only proved possible to date to achieve an around 20% efficiency with CIGS cells although efficiency levels of 30% are theoretically possible. The work of the scientists in Mainz has been published in the latest edition of the leading journal Physical Review Letters.

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