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Improved Performance of Polymer Bulk Heterojunction Solar Cells Through the Reduction of Phase Separation via Solvent Additives
Author(s) -
Hoven Corey V.,
Dang XuanDung,
Coffin Robert C.,
Peet Jeff,
Nguyen ThucQuyen,
Bazan Guillermo C.
Publication year - 2010
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.200903677
Subject(s) - materials science , boiling point , solvent , polymer , phase (matter) , boiling , chemical engineering , polymer solar cell , organic chemistry , composite material , chemistry , engineering
A high‐boiling‐point additive that favors both poly[(4,4‐didodecyldithieno[3,2‐b:2′,3′‐d]silole)‐2,6‐diyl‐alt‐(2,1,3‐benzoxadiazole)‐4,7‐diyl] and PC 71 BM in a bulk heterojunction solar cell is used to reduce large‐scale aggregation and phase separation, which increases device performance. This is in contrast to the majority of high‐boiling‐point additives that improve performance by increasing phase separation.