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High‐Performance All‐Polymer Solar Cells Via Side‐Chain Engineering of the Polymer Acceptor: The Importance of the Polymer Packing Structure and the Nanoscale Blend Morphology
Author(s) -
Lee Changyeon,
Kang Hyunbum,
Lee Wonho,
Kim Taesu,
Kim KiHyun,
Woo Han Young,
Wang Cheng,
Kim Bumjoon J.
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201405226
Subject(s) - materials science , polymer , polymer solar cell , side chain , acceptor , morphology (biology) , nanoscopic scale , chemical engineering , photovoltaic system , organic solar cell , polymer chemistry , nanotechnology , composite material , ecology , biology , engineering , physics , genetics , condensed matter physics
The effectiveness of side‐chain engineering is demonstrated to produce highly efficient all‐polymer solar cells (efficiency of 5.96%) using a series of naphthalene diimide‐based polymer acceptors with controlled side chains. The dramatic changes in the polymer packing, blend morphology, and electron mobility of all‐polymer solar cells elucidate clear trends in the photovoltaic performances.