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Bacal, Dorota M.; Lal, Niraj N.; Jumabekov, Askhat N.; Hou, Qicheng; Hu, Yinghong; Lu, Jianfeng; Chesman, Anthony S. R. und Bach, Udo (2020): Solution-processed antireflective coating for back-contact perovskite solar cells. In: Optics Express, Bd. 28, Nr. 9: S. 12650-12660

Volltext auf 'Open Access LMU' nicht verfügbar.

Abstract

Back-contact architectures for perovskite solar cells eliminate parasitic-absorption losses caused by the electrode and charge collection layers but increase surface reflection due to the high refractive index mismatch at the air/perovskite interface. To mitigate this, a similar to 85 nm thick layer of poly(methyl methacrylate) (PMMA), with a refractive index between those of air and perovskite, has been applied as an antireflective coating. Transfer matrix modelling is used to determine the ideal PMMA layer thickness, with UV-Vis spectroscopy measurements used to confirm the increase in absorption that arises through the application of the antireflective coating. The deposition of a thin film of PMMA via spin coating onto a solar cell results in a 20-30% relative increase in short circuit current density and stable power output density. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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