New synthesis approach for soluble silicon clusters

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In a simple, two-step reaction scientists at the laboratory of Fässler produce n
In a simple, two-step reaction scientists at the laboratory of Fässler produce nine-atom silicon clusters in soluble form. Image: U. Benz / TUM

Theoretical calculations indicate that under certain conditions silicon can endow solar cells with a much higher efficiency. Small silicon clusters may provide a source of accordingly modified silicon. However, to date these clusters have not been accessible in soluble form, a prerequisite for flexible processing. Researchers at the Technical University of Munich (TUM) have now discovered a simple synthesis approach.

Today, the best silicon solar cells in the world have an efficiency of 24 percent. The theoretical limit is around 29 percent. ...

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