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Achieving 17.7% Efficiency of Ternary Organic Solar Cells by Incorporating a High Lowest Unoccupied Molecular Orbital Level and Miscible Third Component

  • Datos identificativos

    Identificador: imarina:9296447
    Autores:
    Amelenan Torimtubun, Alfonsina AbatMendez, MariaMoustafa, EnasPallares, JosepPalomares, EmilioMarsal, Lluis F
    Resumen:
    A ternary strategy has been demonstrated as being an effective method to improve the power conversion efficiency (PCE); however, general rules for materials selection are not fully comprehended. Herein, nonfullerene acceptor ITIC-M and fullerene acceptor PC70BM possessing higher lowest unoccupied molecular orbital (LUMO) and good miscibility with nonfullerene acceptor Y7 are incorporated as third components in the state-of-the-art of PM6:Y7 binary blend. As a result, the device PCE for both ternary devices improves from 16.46% for binary host to 17.73% and 17.67% for ITIC-M- and PC70BM-based ternary devices, respectively. The higher LUMO of the guest acceptor can play multiple roles to elevate the open-circuit voltage such as reducing energy-loss and reverse saturation current, creating less-localized shallow trap sites along with suppressing charge recombination, and decreasing Urbach energy. Moreover, the good miscibility facilitates an alloy-like phase in acceptors domain for efficient exciton dissociation and electron transport, which leads to improved short-circuit current density and fill factor in ternary devices. The results provide a promising approach to realize high-performance ternary organic solar cells by synergizing the compatible third component with host acceptor.
  • Otros:

    Autor según el artículo: Amelenan Torimtubun, Alfonsina Abat; Mendez, Maria; Moustafa, Enas; Pallares, Josep; Palomares, Emilio; Marsal, Lluis F
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Marsal Garví, Luis Francisco / MÉNDEZ MÁLAGA, MARIA / Pallarès Marzal, Josep / Torimtubun, Alfonsina Abat Amelenan
    Palabras clave: Transient photovoltage Ternary organic solar cells Nonfullerenes Impedance spectroscopy Fullerenes Alloy-like models
    Resumen: A ternary strategy has been demonstrated as being an effective method to improve the power conversion efficiency (PCE); however, general rules for materials selection are not fully comprehended. Herein, nonfullerene acceptor ITIC-M and fullerene acceptor PC70BM possessing higher lowest unoccupied molecular orbital (LUMO) and good miscibility with nonfullerene acceptor Y7 are incorporated as third components in the state-of-the-art of PM6:Y7 binary blend. As a result, the device PCE for both ternary devices improves from 16.46% for binary host to 17.73% and 17.67% for ITIC-M- and PC70BM-based ternary devices, respectively. The higher LUMO of the guest acceptor can play multiple roles to elevate the open-circuit voltage such as reducing energy-loss and reverse saturation current, creating less-localized shallow trap sites along with suppressing charge recombination, and decreasing Urbach energy. Moreover, the good miscibility facilitates an alloy-like phase in acceptors domain for efficient exciton dissociation and electron transport, which leads to improved short-circuit current density and fill factor in ternary devices. The results provide a promising approach to realize high-performance ternary organic solar cells by synergizing the compatible third component with host acceptor.
    Áreas temáticas: Materials science, multidisciplinary Energy engineering and power technology Energy & fuels Electronic, optical and magnetic materials Electrical and electronic engineering Atomic and molecular physics, and optics
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: alfonsina.abat@estudiants.urv.cat alfonsina.abat@estudiants.urv.cat josep.pallares@urv.cat lluis.marsal@urv.cat
    Identificador del autor: 0000-0001-8012-4772 0000-0001-8012-4772 0000-0001-7221-5383 0000-0002-5976-1408
    Fecha de alta del registro: 2024-10-12
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/full/10.1002/solr.202300228
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Solar Rrl. 7 (11):
    Referencia de l'ítem segons les normes APA: Amelenan Torimtubun, Alfonsina Abat; Mendez, Maria; Moustafa, Enas; Pallares, Josep; Palomares, Emilio; Marsal, Lluis F (2023). Achieving 17.7% Efficiency of Ternary Organic Solar Cells by Incorporating a High Lowest Unoccupied Molecular Orbital Level and Miscible Third Component. Solar Rrl, 7(11), -. DOI: 10.1002/solr.202300228
    DOI del artículo: 10.1002/solr.202300228
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2023
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Atomic and Molecular Physics, and Optics,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Energy & Fuels,Energy Engineering and Power Technology,Materials Science, Multidisciplinary
    Transient photovoltage
    Ternary organic solar cells
    Nonfullerenes
    Impedance spectroscopy
    Fullerenes
    Alloy-like models
    Materials science, multidisciplinary
    Energy engineering and power technology
    Energy & fuels
    Electronic, optical and magnetic materials
    Electrical and electronic engineering
    Atomic and molecular physics, and optics
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