Tailored ZnS/Ag/TiOx transparent and conductive electrode for organic solar cells
| Autor: | Amina Labiod, Philippe Torchio, Saad Touihri, Mohamed Ahmed Cherif, Damien Barakel |
|---|---|
| Přispěvatelé: | Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Université de Tunis - El Manar II, Université de Tunis El Manar (UTM), OPTO-PV, Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), University of Tunis El Manar, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Fabrication metal Organic solar cell thin film lcsh:TJ807-830 lcsh:Renewable energy sources chemistry.chemical_element 02 engineering and technology Dielectric 7. Clean energy 01 natural sciences 0103 physical sciences Transmittance Electrical and Electronic Engineering Thin film dielectric Sheet resistance [PHYS]Physics [physics] 010302 applied physics in-free transparent and conductive electrodes multilayer Renewable Energy Sustainability and the Environment business.industry organic solar cells 021001 nanoscience & nanotechnology Condensed Matter Physics Electronic Optical and Magnetic Materials chemistry Electrode Optoelectronics oxide tmm numerical calculation 0210 nano-technology business Indium |
| Zdroj: | EPJ Photovoltaics, Vol 10, p 2 (2019) EPJ Photovoltaics EPJ Photovoltaics, EDP sciences, 2019, 10, pp.2. ⟨10.1051/epjpv/2019004⟩ EPJ Photovoltaics, 2019, 10, pp.2. ⟨10.1051/epjpv/2019004⟩ |
| ISSN: | 2105-0716 |
| Popis: | Organic photovoltaic cells (OPVCs) attract high interest for solar energy harvesting. They are based on organic thin films sandwiched between two electrodes, one of them being transparent and conductive. Nowadays, ITO remains the most widely used transparent conductive electrode (TCE) because of its excellent optical and electrical properties compared to other TCEs. However, it has some drawbacks such as scarcity of indium, high fabrication cost, and mechanical properties poorly adapted to use as flexible substrates. To keep these performances without indium, several materials can replace ITO such as MoO3, ZnO, ZnS, TiO2,… as dielectric and Ag, Cu,... as metal inside a dielectric/metal/dielectric three-layer structure. A Transfer Matrix Method (TMM) based numerical model is used to predict the optical behavior of the considered electrodes. ZnS/Ag/TiOx electrodes are manufactured by a vacuum electron beam evaporator on glass substrates, then characterized by UV-Visible spectrophotometer for obtaining transmittance and reflectance and by a four-point method for the measurement of sheet resistance. It is found that the simulation and experimental curves are quite similar. The transmittance is measured to be higher than 80% on a wide spectral band that can be tailored by the thickness of the upper dielectric material. The optical window Δλ, for T > 80%, can be tuned in the 400–800 nm spectral band, according to the thickness of TiOx in the 25–50 nm range. This variation allows us to adapt our electrode to organic materials in order to optimize the performance of organic solar cells. The sheet resistance obtained is around to 7 Ω/sq, which gives our electrodes the transparent and conductive character simultaneously. A typical parameter to compare the electrodes is the merit figure, which questions the average optical transmission T av in the visible range and the sheet resistance R sq. By applying this figure to many manufactured electrodes, the obtained optimal structure of our TCEs is demonstrated to be ZnS (40 nm)/Ag (10 nm)/TiOx (30 nm). |
| Databáze: | OpenAIRE |
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