1. On the contribution of fullerene to the current of planar heterojunction organic solar cells
- Author
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J.C. Bernède, Linda Cattin, S. Touihri, A. El Mahlali, Ludovic Arzel, M.A. Cherif, Ph. Torchio, Hajar Ftouhi, E.M. El-Menyawy, Z. El Jouad, M. Addou, Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Université de Tunis, MOLTECH-Anjou, Université d'Angers (UA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université Chouaib Doukkali (UCD), Université Abdelmalek Essaâdi (UAE), National Research Centre - NRC (EGYPT), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), and Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)
- Subjects
Materials science ,Fullerene ,Acoustics and Ultrasonics ,Organic solar cell ,Organic solar cells ,External Quantum Efficiency ,02 engineering and technology ,Dielectric ,Photovoltaic effect ,Planar heterojunction ,010402 general chemistry ,7. Clean energy ,01 natural sciences ,Absorption ,law.invention ,law ,Optical Modeling ,business.industry ,Heterojunction ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Cathode ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Electrode ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Optoelectronics ,Quantum efficiency ,0210 nano-technology ,business - Abstract
International audience; Recently, significant progress in the field of organic photovoltaic cells was obtained by substituting new electron acceptor molecules to the fullerene, which was attributed to the fact that the fullerene absorption is quite small. Nevertheless, we demonstrate in the present work that, in the case of inverted cells, i.e. when the transparent bottom electrode is used as cathode, the contribution of fullerene to the Jsc short-circuit current of the cells, if not dominant, is not negligible; and that mainly in the short wavelength spectral range. The experimental results are confirmed by an optical simulation. Due to this significant contribution to Jsc, the light transmission of the transparent electrode towards the UV-part of the spectrum is crucial for inverse cell performances. When a transparent conductive electrode based on an alternative dielectric/metal/dielectric structure is substituted to ITO, such as ZnS/Ag/TiO 2 , the study allows to obtain promising results, although there is a loss of performance due to the decrease of transmission of TiO 2 below 400 nm in wavelength.
- Published
- 2020
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