Perylene diimide isomers containing a simple sp(3)-core for non-fullerene-based polymer solar cells
Park, GiEun; Choi, S; Lee, DaeHee; Godumala, M; Uddin, MA; Woo, HanY; Cho, MinJu; Choi, DH
| HERO ID | 3575822 |
|---|---|
| In Press | No |
| Year | 2017 |
| Title | Perylene diimide isomers containing a simple sp(3)-core for non-fullerene-based polymer solar cells |
| Authors | Park, GiEun; Choi, S; Lee, DaeHee; Godumala, M; Uddin, MA; Woo, HanY; Cho, MinJu; Choi, DH |
| Volume | 5 |
| Issue | 2 |
| Page Numbers | 663-671 |
| Abstract | In order to investigate the effect of the geometries of perylene diimide (PDI)-based small molecules, five different isomers were synthesized by using a cyclohexane core as a simple sp(3)-sigma core. Diaminocylohexane is such an effective core for the systematic development of many kinds of isomers via geometric tuning as well as for reducing the self-aggregation tendency of PDIs. Depending on the anchoring position of the PDI units on the cyclohexane core (ortho-, meta- and para-), isomers exhibited differences in solubility and crystallinity. Among the studied isomers, ortho-substituted t-OCP was found to have a highly twisted molecular structure which minimizes the strong tendency towards crystallization due to individual PDI moieties. The unique geometrical nature of the t-OCP isomer led to the highest power conversion efficiency (PCE = 6.23%) of bulk heterojunction (BHJ) polymer solar cells (PSCs) with a higher short-circuit current density (J(sc)) and fill factor (FF). It is mainly ascribed to the formation of a nanophase interpenetrating network with well-balanced carrier mobility in the blend film. |
| Doi | 10.1039/c6ta09394a |
| Wosid | WOS:000392413600023 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:JOURNAL OF MATERIALS CHEMISTRY A 2050-7488 |
| Is Public | Yes |