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.
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.
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.
Changyeon
C
Lee
Hyunbum
H
Kang
Wonho
W
Lee
Taesu
T
Kim
Ki-Hyun
KH
Kim
Han Young
HY
Woo
Cheng
C
Wang
Bumjoon J
BJ
Kim
BHJ morphology; all-polymer solar cells; high efficiency; polymer crystallinity; side-chain engineering