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Front Cover: Quinoidal 2,2′,6,6′‐Tetraphenyl‐Dipyranylidene as a Dopant‐Free Hole‐Transport Material for Stable and Cost‐Effective Perovskite Solar Cells (Energy Technol. 10/2017)
Author(s) -
Shen Chao,
Courté Marc,
Krishna Anurag,
Tang Shasha,
Fichou Denis
Publication year - 2017
Publication title -
energy technology
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700468
Subject(s) - dopant , perovskite (structure) , materials science , solar cell , engineering physics , optoelectronics , doping , chemistry , physics , crystallography
A dopant‐free hole‐transport material for perovskite solar cells : The cover picture shows a perovskite solar cell utilizing a dipyrranylidene compound (DIPO‐Ph4) as an efficient, dopant‐free hole‐transport material, leading to power‐conversion efficiencies of over 10 %. DIPO‐Ph4 is a simple organic molecule made of a large quinoidal planar π‐conjugated core that is easy to synthetize, highly stable, and exhibits a high hole mobility in the crystalline phase. The background of the picture is a photograph of the iconic Singapore skyline showing the solar park located behind the Gardens by the Bay at the forefront. This work has been presented at the ICMAT Conference in Singapore, June 2017. More details can be found in the Full Paper by Chao Shen et al. at on Nanyang Technological University in Singapore and CNRS/Sorbonne Universités in Paris, France on page 1852 in Issue 10, 2017 (DOI: 10.1002/ente.201700448).