TY  - JOUR
A1  - Love, John A.
A1  - Chou, Shu-Hua
A1  - Huang, Ye
A1  - Bazan, Guillermo C.
A1  - Thuc-Quyen Nguyen, 
T1  - Effects of solvent additive on "s-shaped" curves in solution-processed small molecule solar cells
JF  - Beilstein journal of organic chemistry
N2  - A novel molecular chromophore, p-SIDT(FBTThCA8)(2), is introduced as an electron-donor material for bulk heterojunction (BHJ) solar cells with broad absorption and near ideal energy levels for the use in combination with common acceptor materials. It is found that films cast from chlorobenzene yield devices with strongly s-shaped current-voltage curves, drastically limiting performance. We find that addition of the common solvent additive diiodooctane, in addition to facilitating crystallization, leads to improved vertical phase separation. This yields much better performing devices, with improved curve shape, demonstrating the importance of morphology control in BHJ devices and improving the understanding of the role of solvent additives.
KW  - current voltage analysis
KW  - morphology
KW  - organic solar cells
Y1  - 2016
U6  - https://doi.org/10.3762/bjoc.12.249
SN  - 1860-5397
VL  - 12
SP  - 2543
EP  - 2555
PB  - Beilstein-Institut zur Förderung der Chemischen Wissenschaften
CY  - Frankfurt, Main
ER  -