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Cover Feature: A peri ‐Xanthenoxanthene Centered Columnar‐Stacking Organic Semiconductor for Efficient, Photothermally Stable Perovskite Solar Cells (Chem. Eur. J. 4/2019)
Author(s) -
Xu Niansheng,
Li Yang,
Wu Ruihan,
Zhu Rui,
Zhang Jidong,
Zakeeruddin Shaik M.,
Li Hanying,
Li ZeSheng,
Grätzel Michael,
Wang Peng
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201806284
Subject(s) - stacking , perovskite (structure) , materials science , optoelectronics , planar , semiconductor , anode , peri , organic semiconductor , core (optical fiber) , crystallography , chemistry , composite material , computer science , electrode , organic chemistry , philosophy , computer graphics (images) , theology
A low‐cost peri ‐xanthenoxanthene‐based hole‐transporter has been developed for highly efficient and stable perovskite solar cells (PSCs). With strong π–π interactions, the planar π‐conjugated two‐dimensional heterocycles form core‐to‐core stacking, building a firm bridge between the perovskite and anode for holes to pass through. PSCs employing this new hole transporter attain a high efficiency of 19.8 % at the standard AM 1.5 G conditions, and good long‐term stability under continuous full sunlight exposure at 40 °C. More information can be found in the Communication by P. Wang et al. on page 945.