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Solution-processed bulk-heterojunction organic solar cells employing Ir complexes as electron donors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhen, Hongyu Hou, Qiong Ma, Zaifei Fabiano, Simone Gao, Feng Zhang, Fengling |
| Copyright Year | 2014 |
| Abstract | To explore enhancing photocurrent in organic solar cells (OSCs) via harvesting triplet excitons, two novel bicycloiridium complexes (R1 and R2) are designed and synthesized. Conventional bulk-heterojunction triplet OSCs are solution processed using R1 or R2 as sole electron donors and phenyl-C71-butyric acid methyl ester (PC71BM) as the electron acceptor. A decent short circuit current (Jsc) of 6.5 mA cm−2 is achieved though the overlap between the absorption spectrum (with ∼550 nm absorption onset) of R2 and the solar flux is relatively small. With an open circuit voltage of 0.74 V and a fill factor of 0.42, an encouraging power conversion efficiency of 2.0% is achieved in the OSCs based on R2 and PC71BM without any processing additives and post-treatments. Our preliminary result demonstrates the possibility of utilizing Ir complexes as sole electron donors in OSCs, which extends available soluble small molecules for OSCs. |
| Starting Page | 12390 |
| Ending Page | 12396 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c4ta01526f |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ta/c4/c4ta01526f/c4ta01526f1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c4ta01526f |
| Volume Number | 2 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
