COMPARISON OF PERFORMANCES OF ORGANIC PHOTOVOLTAIC CELLS USING SubPc AS CENTRAL AMBIPOLAR LAYER IN TERNARY STRUCTURES AND AS ELECTRON ACCEPTOR IN BINARY STRUCTURES
| Autor: | Abdelbacet Khelil, J.C. Bernède, Linda Cattin, M. Addou, Z. El Jouad, G. Neculqueo, M. B. Siad, S. Morsli, A. Mohammed Krarroubi |
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| Přispěvatelé: | MOLTECH-Anjou, Université d'Angers (UA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), 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)-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), Faculté des sciences et Techniques de Tanger, Université Abdelmalek Essaâdi (UAE), Université d'Oran 1 Ahmed Ben Bella [Oran], Université de Nantes (UN), Comision Chilena de Energia Nuclear, Departamento de Materiales Nucleares |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Binary number 02 engineering and technology 010402 general chemistry 7. Clean energy 01 natural sciences Planar Materials Chemistry ComputingMilieux_MISCELLANEOUS chemistry.chemical_classification Ambipolar diffusion business.industry Photovoltaic system Heterojunction Surfaces and Interfaces Electron acceptor 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films chemistry [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Optoelectronics 0210 nano-technology business Ternary operation Layer (electronics) |
| Zdroj: | Surface Review and Letters Surface Review and Letters, World Scientific Publishing, 2020, 27 (07), pp.1950184. ⟨10.1142/S0218625X19501841⟩ |
| ISSN: | 0218-625X |
| DOI: | 10.1142/S0218625X19501841⟩ |
| Popis: | We compare the performances of organic photovoltaic cells (OPVCs) based on binary and ternary planar heterojunctions. The organic active layers are pentathiophene (5T), subphthalocyanine (SubPc) and fullerene (C60). SubPc being an ambipolar material we used it either as electron acceptor in binary OPVCs or as central layer in ternary cells in order to increase the efficiency of OPVCs using 5T as electron donor. So, the different OPVC configurations were 5T/C60, 5T/SubPc and 5T/SubPc/C60. The effect of the different organic layer thicknesses on the device performances was studied. In order to understand the behavior of the different OPVC configurations, we proceeded with a morphological study. The influence of the high roughness of the 5T layer on the OPVCs performances is discussed. The best OPVCs performances are obtained with the binary structure 5T/SubPc. Its maximum efficiency corresponds to an increase of 50% compared to the OPVC based on the couple 5T/C60. External Quantum Efficiency measurements show that both layers participate to the current generation. The efficiency increase is mainly due to the increase of the open circuit voltage ([Formula: see text]). In the case of ternary OPVCs, [Formula: see text] is limited by the band structure of 5T and C60, moreover, the efficiency is also limited by the poor charge collection efficiency of the ternary structure and the series resistance of the three stacked organic layers. |
| Databáze: | OpenAIRE |
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