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Solution-processing interface layers for high performance perovskite solar cells

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Interface engineering has been proved to be a practical strategy to enhance power conversion efficiency (PCE) and stability of perovskite solar cells. Recently approaches involving ultra-thin layer deposition and vacuum-processing, while improving PCE, increase the processing complexity, and thus an overall cost. In this talk, we demonstrate a high-efficiency inverted planar perovskite solar cell, obtained with a simple wet-chemistry based, room-temperature, and cost-effective processing, which involved two interface layers: molybdenum oxide (MoOx) for anode and titanium (IV) oxide bis (2,4-pentanedionate) (TOPD) for cathode layer. The resulted best cell with a FF as high as 80.7% and a remarkable improvement PCE of ~16%, which exceeds the PCE of a device without the interface layers (~11.2%).

© 2017 Optical Society of America

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