Academic Journal
Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT‐Based Non‐Fullerene Acceptors with PCE10 as Donor Polymer
| العنوان: | Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT‐Based Non‐Fullerene Acceptors with PCE10 as Donor Polymer |
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| المؤلفون: | Khan, Jafar, Alamoudi, Maha, Chaturvedi, Neha, Ashraf, Raja, Nabi, Mohammed, Markina, Anastasia, Liu, Wenlan, Dela Peña, Top Archie, Zhang, Weimin, Alévêque, Olivier, Harrison, George, Alsufyani, Wejdan, Levillain, Eric, de Wolf, Stefaan, Andrienko, Denis, Mcculloch, Iain, Laquai, Frédéric |
| المساهمون: | King Abdullah University of Science and Technology Saudi Arabia (KAUST), Max-Planck-Institut für Polymerforschung (MPI-P), Max-Planck-Gesellschaft, Hong Kong University of Science and Technology (HKUST), MOLTECH-Anjou, Université d'Angers (UA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS), University of Oxford, ANR-18-EURE-0012,LumoMat-E,Molecular Materials for Organic Electronics/Photonics(2018) |
| المصدر: | ISSN: 1614-6832. |
| بيانات النشر: | HAL CCSD Wiley-VCH Verlag |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | non-fullerene acceptor, ultrafast spectroscopy, quadrupole moment, organic photovoltaics, charge generation, [CHIM.POLY]Chemical Sciences/Polymers, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic |
| الوصف: | International audience ; Advancing non-fullerene acceptor (NFA) organic photovoltaics requires the mitigation of the efficiency-limiting processes. Acceptor end-group and side-chain engineering are two handles to tune properties, and a better understanding of their specific impact on the photophysics could facilitate a more guided acceptor design. Here, the device performance, energetic landscape, and photophysics of rhodanine and dicyanovinyl end-capped IDT-based NFAs, namely, O-IDTBR and O-IDTBCN, in PCE10-based solar cells are compared by transient optical and electro-optical spectroscopy techniques and density functional theory calculations. It is revealed how the acceptors’ quadrupole moments affect the interfacial energetic landscape, in turn causing differences in exciton quenching, charge dissociation efficiencies, and geminate versus non-geminate recombination losses. More precisely, it is found that the open circuit voltage (VOC) is controlled by the acceptors’ electron affinity (EA), while geminate and non-geminate recombination, and the field dependence of charge generation, rely on the acceptors’ quadrupole moments. The kinetic parameters and yields of all processes are determined, and it is demonstrated that they can reproduce the performance differences of the devices’ current–voltage characteristics in carrier drift-diffusion simulations. The results provide insight into the impact of the energetic landscape, specifically the role of the quadrupole moment of the acceptor, beyond trivial considerations of the donor–acceptor energy offsets. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/aenm.202100839 |
| الاتاحة: | https://hal.science/hal-03419530 https://hal.science/hal-03419530v1/document https://hal.science/hal-03419530v1/file/AEM_revision_finalR1.pdf https://doi.org/10.1002/aenm.202100839 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.DF30393F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/aenm.202100839 |
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