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Spectroscopy Probes the Energy-Level Landscape of Solar Cells

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HEIDELBERG, Germany, Aug. 15, 2019 — A new spectroscopic method developed by researchers at Heidelberg University could enable scientists to study the physical principles of organic photovoltaics with extreme precision to better understand how energetic losses occur. The new method combines ultraviolet photoemission spectroscopy and argon cluster etching to allow scientists to directly visualize the vertical energetic landscape in the donor-acceptor blend. The researchers investigated both model and high-performance photovoltaic systems using their new technique and demonstrated that the resulting photovoltaic gaps were in...Read full article

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