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Highly Efficient Perovskite Solar Cells Employing an Easily Attainable Bifluorenylidene‐Based Hole‐Transporting Material
Author(s) -
Rakstys Kasparas,
Saliba Michael,
Gao Peng,
Gratia Paul,
Kamarauskas Egidijus,
Paek Sanghyun,
Jankauskas Vygintas,
Nazeeruddin Mohammad Khaja
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201602545
Subject(s) - perovskite (structure) , moiety , energy conversion efficiency , reagent , materials science , perovskite solar cell , chemical engineering , solar cell , combinatorial chemistry , nanotechnology , chemistry , optoelectronics , organic chemistry , engineering
The 4,4′‐dimethoxydiphenylamine‐substituted 9,9′‐bifluorenylidene ( KR216 ) hole transporting material has been synthesized using a straightforward two‐step procedure from commercially available and inexpensive starting reagents, mimicking the synthetically challenging 9,9′‐spirobifluorene moiety of the well‐studied spiro‐OMeTAD. A power conversion efficiency of 17.8 % has been reached employing a novel HTM in a perovskite solar cells.