On the use of multiple stacked active layers in organic photovoltaic cells
| العنوان: | On the use of multiple stacked active layers in organic photovoltaic cells |
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| المؤلفون: | Abdelbacet Khelil, J.C. Bernède, M. B. Siad, Linda Cattin, F. Mir, G. Neculqueo, E. Ortega, Guy Louarn, H. Lamkaouane, Ludovic Arzel, Z. El Jouad, Mustapha Morsli, M. Addou, M. A. del Valle |
| المساهمون: | 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), MOLTECH-Anjou, Université d'Angers (UA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Faculté des sciences et Techniques de Tanger, Université Abdelmalek Essaâdi (UAE), Université d'Oran 1 Ahmed Ben Bella [Oran], Université de Nantes (UN), Pontificia Universidad Católica de Chile (UC), Comision Chilena de Energia Nuclear, Departamento de Materiales Nucleares, Université Hassan II [Casablanca] (UH2MC), Institut de Chimie du CNRS (INC)-Université d'Angers (UA)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Journal of Materials Science Journal of Materials Science, Springer Verlag, 2020, 55 (23), pp.9762-9774. ⟨10.1007/s10853-020-04568-9⟩ |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Electron mobility, Materials science, Photoluminescence, Exciton, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Condensed Matter::Materials Science, General Materials Science, Absorption (electromagnetic radiation), HOMO/LUMO, ComputingMilieux_MISCELLANEOUS, chemistry.chemical_classification, business.industry, Mechanical Engineering, Heterojunction, Electron acceptor, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Mechanics of Materials, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Optoelectronics, 0210 nano-technology, business, Ternary operation |
| الوصف: | In the field of organic photovoltaic cells (OPVs), ternary planar heterojunction allows widening absorption range. Optimization of the energy levels at the organic interfaces is the first task to achieve in order to obtain OPVs with high efficiency. In ternary OPVs, carrier mobility, charge transfer and presence of energy transfer are determinant. Here, we compare the performances of different, binary (electron donor/fullerene) and ternary (electron donor/ambipolar material/fullerene) combinations of small organic molecules in planar heterojunction (PHJ) cells. We chose the different ED molecules in order to investigate the different possible band scheme alignments. The study shows that if the open circuit voltage (Voc) is limited by the energy levels of the outer layers, i.e. the difference between the lowest unoccupied molecular orbital (LUMO) of the electron acceptor and the highest occupied molecular orbital (HOMO) of the outer electron donor layer, the energy loss can be smaller than 0.2 eV. If efficient ternary OPVs need global energy offset higher than the exciton energy to separate the charges of the exciton, the distribution of this offset between ΔLUMO and ΔHOMO is not critical. The mobility value of the carriers in the intercalated layer is determinant in obtaining performance of OPVs. Overlap between the photoluminescence of ED and the optical absorption of EDA is primordial for good energy transfer. The highest OPV efficiency improvement is obtained with organic materials such as ED and EDA that have the same HOMO and similar hole mobility which give homogeneous thin layers. |
| اللغة: | English |
| تدمد: | 0022-2461 1573-4803 |
| DOI: | 10.1007/s10853-020-04568-9⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dfbb5f489b8a79c3009a953b2bc7382 https://hal.archives-ouvertes.fr/hal-02866665 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....5dfbb5f489b8a79c3009a953b2bc7382 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00222461 15734803 |
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| DOI: | 10.1007/s10853-020-04568-9⟩ |