Published in
Royal Society of Chemistry, Nanoscale, 3(7), p. 896-900
DOI: 10.1039/c4nr05975a
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Efficiency enhancement of planar perovskite solar cells by adding zwitterion/LiF double interlayers for electron collection
Journal article published in 2014 by
Kuan Sun,
Jingjing Chang 
,
Furkan Halis Isikgor,
Pengcheng Li,
Jianyong Ouyang
,
Furkan Halis Isikgor,
Pengcheng Li,
Jianyong Ouyang
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Abstract
Double interlayers consisting of a zwitterionic small molecule layer and a LiF layer were introduced between the electron transport layer and the cathode of perovskite solar cells. The double interlayers improve the photovoltaic efficiency to 13.2%, which is higher than that of control devices without the double interlayer (9.2%) or with LiF (11.0%) or rhodamine 101 zwitterion (12.1%) alone.