Effects of solvent additive on "s-shaped" curves in solution-processed small molecule solar cells
- 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.
| Verfasserangaben: | John A. Love, Shu-Hua Chou, Ye Huang, Guillermo C. Bazan, Thuc-Quyen Nguyen |
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| DOI: | https://doi.org/10.3762/bjoc.12.249 |
| ISSN: | 1860-5397 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/28144323 |
| Titel des übergeordneten Werks (Englisch): | Beilstein journal of organic chemistry |
| Verlag: | Beilstein-Institut zur Förderung der Chemischen Wissenschaften |
| Verlagsort: | Frankfurt, Main |
| Publikationstyp: | Wissenschaftlicher Artikel |
| Sprache: | Englisch |
| Jahr der Erstveröffentlichung: | 2016 |
| Erscheinungsjahr: | 2016 |
| Datum der Freischaltung: | 22.03.2020 |
| Freies Schlagwort / Tag: | current voltage analysis; morphology; organic solar cells |
| Band: | 12 |
| Seitenanzahl: | 13 |
| Erste Seite: | 2543 |
| Letzte Seite: | 2555 |
| Fördernde Institution: | Office of Naval Research [N000141410076]; Camille Dreyfus Teacher Scholar Award; Stanford Synchrotron Radiation Light source (SSRL) - U.S. Department of Energy |
| Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer Review: | Referiert |
