Introducing high-performance non-fullerene organic solar cells

ScienceDaily | 8/30/2018 | Staff
Emzah92 (Posted by) Level 3
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A research team, led by Professor Changduk Yang and his research team in the School of Energy and Chemical Engineering at UNIST, has introduced a novel method that can solve issues associated with the thickness of the photoactive layers in OSCs.

In the study, the research team has succeeded in obtaining an efficiency of 12.01% in the organic solar cells, using a non-fullerance acceptor (IDIC) in the photoactive layer. Moreover, the new photoactive layer maintained its initial efficiency, even when the maximum measured thickness being in the range of 300 nm. This will help accelerate the design process, as well as the further commercialization of OSCs.

Layers - OSCs - Nm - Printing - Process

"Photoactive layers in the existing OSCs are rather thin (100 nm), and therefore it has been impossible to handle them via large-area printing process," says Professor Yang. "The new photoactive layer maintained its initial efficiency, even when the maximum measured thickness being in the range of 300 nm."

Conventional solar cells are inorganic solar cells that are made of silicon (Si) semiconductors. While these solar cells are highly efficient and stable, they are inflexible and expensive, thus challenging to produce. Therefore, in recent years, lightweight organic solar cells (OSCs) and perovskite solar cells have gained much attention as the promising candidates for next-generation solar cells.

OSCs - Stability - Reproducibility - Efficiency - Level

Although OSCs do exhibit high stability and reproducibility, the efficiency level of OSCs is not nearly as high as that of the...
(Excerpt) Read more at: ScienceDaily
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