Improved performance of polymer bulk heterojunction solar cells through the reduction of phase separation via solvent additives

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 PC71BM 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.

Hoven, C., Dang, X.D., Coffin, C., Peet, J., Nguyen, T.Q., Bazan, G.
Advanced Energy Materials
Volume: 22
Number: 8
Pages: E63-E66
Date: February, 2010
ICB Affiliated Authors: Guillermo C Bazan, Thuc-Quyen Nguyen