Fabrication of Organic Solar Cells from Surfactant‐Free Aqueous Nanoparticle Dispersions
Fischer, Karen
1,2; Fichtelmann, Florian 1,2; Bruder, Jan 1,2; Armleder, Jonas 1,2; Röhm, Holger
1,2; Colsmann, Alexander
1,2
1 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
2 Materialwissenschaftliches Zentrum für Energiesysteme (MZE), Karlsruher Institut für Technologie (KIT)
1,2; Fichtelmann, Florian 1,2; Bruder, Jan 1,2; Armleder, Jonas 1,2; Röhm, Holger
1,2; Colsmann, Alexander
1,21 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
2 Materialwissenschaftliches Zentrum für Energiesysteme (MZE), Karlsruher Institut für Technologie (KIT)
Abstract:
Light-harvesting layers in organic bulk-heterojunction solar cells are commonly
fabricated from aromatic or even chlorinated solvents, which are often toxic
or otherwise hazardous. In this work, nanoparticle dispersions of a blend of
poly(3-hexylthiophene) and [6,6]-phenyl C$_{71}$-butric acid methyl ester (P3HT:
PC$_{71}$BM) are synthesized in water, omitting any stabilizing surfactants which
would remain in the layer and hamper the device performance. To overcome
wetting issues and to master the deposition of thin films from aqueous dis-
persions, co-solvents are employed. The solar cells exhibit power conversion
efficiencies of 2.7% and show excellent long-term stability, paving a promising
way towards the all-eco-friendly production of organic solar cells in the future.
fabricated from aromatic or even chlorinated solvents, which are often toxic
or otherwise hazardous. In this work, nanoparticle dispersions of a blend of
poly(3-hexylthiophene) and [6,6]-phenyl C$_{71}$-butric acid methyl ester (P3HT:
PC$_{71}$BM) are synthesized in water, omitting any stabilizing surfactants which
would remain in the layer and hamper the device performance. To overcome
wetting issues and to master the deposition of thin films from aqueous dis-
persions, co-solvents are employed. The solar cells exhibit power conversion
efficiencies of 2.7% and show excellent long-term stability, paving a promising
way towards the all-eco-friendly production of organic solar cells in the future.
| Zugehörige Institution(en) am KIT | Lichttechnisches Institut (LTI) Materialwissenschaftliches Zentrum für Energiesysteme (MZE) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsmonat/-jahr | 10.2025 |
| Sprache | Englisch |
| Identifikator | ISSN: 2194-4288, 2194-4296 KITopen-ID: 1000184215 |
| Erschienen in | Energy Technology |
| Verlag | Wiley-VCH Verlag |
| Band | 13 |
| Heft | 10 |
| Seiten | Art.-Nr.: 2500074 |
| Vorab online veröffentlicht am | 21.06.2025 |
| Nachgewiesen in | Web of Science OpenAlex Dimensions Scopus |
| Globale Ziele für nachhaltige Entwicklung |