Towards organic solar cells without the hole transporting layer on the plasmon-enhanced ITO electrode
| Autor: | Peter Šiffalovi, Monika Benkovičová, Yuriy Halahovets, Matej Jergel, Markus O. A. Erola, Vojtech Nádaždy, Sari Suvanto, Eva Majkova, Tuula T. Pakkanen, J. Ivanco, Andrej Vojtko, Michal Kaiser |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Organic solar cell business.industry Energy conversion efficiency Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Indium tin oxide Active layer Colloidal gold Electrode Materials Chemistry Optoelectronics Nanorod Work function Electrical and Electronic Engineering business |
| Zdroj: | physica status solidi (a). 212:867-876 |
| ISSN: | 1862-6300 |
| DOI: | 10.1002/pssa.201431828 |
| Popis: | The avoiding of the hole transport layer (HTL) by an UV/ozone treatment of the indium tin oxide (ITO) electrode was successfully tested on the P3HT:PC61BM and PBDTTT-CF:PC71BM organic solar cells with plasmonic gold nanoparticles and gold nanorods spincoated on ITO, respectively. Reference device on bare UV-ozone treated ITO and the one with HTL were also prepared for comparison. It was found that the UV/ozone treatment of the bare ITO and plasmon-enhanced ITO electrode allowed an effective alignment of the electrode work function with the polymer in the active layer at the saturated values of 5.5 eV and 5.6 eV, respectively. This result is well explained by the integer charge transfer model. The power conversion efficiency (PCE) of the device on bare UV/ozone treated ITO was comparable to that of the conventional device with HTL. Application of two types of 30 nm gold nanoparticles and 40 nm long gold nanorods on ITO before the subsequent UV/ozone treatment improved the PCE by up to 20% and 10%, respectively. These results suggest feasibility of a simple and cost-effective preparation of OSCs. |
| Databáze: | OpenAIRE |
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