PERYLENE DERIVATIVES AS ETL IN NON-FULLERENE OSCS

Published in 12/12/2023 - ISBN: 978-65-272-0088-8

Paper Title
PERYLENE DERIVATIVES AS ETL IN NON-FULLERENE OSCS
Authors
  • A. E. X. Gavim (PD); IFSC-USP
  • Eduardo Henrique dos Santos Rosa
  • Bruno Bassi Millan Torres
  • P. C. Rodrigues (Pq); UTFPR
  • Roberto Faria
  • WILSON JOSE DA SILVA
  • ANDREIA GERNISKI MACEDO
  • Paulo Miranda
Modality
Pôster
Subject area
Dispositivos eletrônicos e ópticos (OLED/OFET/OPVs/etc.)
Publishing Date
12/12/2023
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/workshop-do-ineo-2023/613271-perylene-derivatives-as-etl-in-non-fullerene-oscs
ISBN
978-65-272-0088-8
Keywords
OPV, Perylene, TMM, non-fullerene acceptors
Summary
Organic Solar Cells (OSCs) have shown a marked increase in efficiency during the last decade due to the development of non-fullerene electron acceptors. However, for a given choice of donor and acceptor molecules, the optimization of these devices includes the use of hole and electron transport layers at the anode and cathode electrodes, which can significantly improve the device performance. In this work, perylene derivatives were used as electron transport layer (ETL) in organic solar cells using PBDB-T and PTB7-Th as electron donor and IDIC as electron acceptor, which were compared to the corresponding solar cells with PC71BM as electron acceptor and calcium as ETL. To allow proper optimization and understanding of the optical absorption within the solar cells, the absorbed power was simulated along the structure of OPV devices considering the interference occurring in stacked thin films under normal incidence by using the transfer matrix method (TMM). The TMM model has been used to simulate the optical electric field in organic solar cells having non-fullerene and fullerene derivatives as electron acceptor. This model takes into account the experimental values of refractive index n and extinction coefficient k acquired from the thin films of the materials that are used in the OSC to simulate the spatial distribution of the optical electric field, providing valuable information about photovoltaic parameters. In contrast to the fullerenes, the non-fullerene acceptor IDIC also contributes to the photocurrent due to its strong optical absorption. Furthermore, the optical absorption (and thus the photocurrent) can also be improved with use of perylene derivatives as ETL due to their absorption bands and optical spacer effects. Therefore, the thin film characterization through ellipsometry and the TMM modelling contribute to understand the behavior of the electromagnetic wave inside the device, providing insights for proper optimizations of the charge generation rate G(x) and the Jsc parameters. This type of simulation, along with other experimental characterizations as AFM, cwPA and PL spectroscopy, helped understand the differences between the non-fullerene and fullerene solar cells with the use of perylene derivatives as ETL. The experimental and simulated results pointed out that the cells with perylene ETLs (ITO/PEDOT:PSS/donor:IDIC/perylene derivatives/Al) had an improved performance when compared with solar cells without ETL (ITO/PEDOT:PSS/donor:IDIC/Al), with Calcium as ETL (ITO/PEDOT:PSS/donor:IDIC /Ca/Al) and with fullerenes as electron acceptor, due to the increase of Jsc in simulated and experimental OSCs.
Title of the Event
Workshop do INEO 2023
City of the Event
Nazaré Paulista
Title of the Proceedings of the event
Anais do Workshop INEO 2023
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

IFSC-USP, A. E. X. Gavim (PD); et al.. PERYLENE DERIVATIVES AS ETL IN NON-FULLERENE OSCS.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/613271-PERYLENE-DERIVATIVES-AS-ETL-IN-NON-FULLERENE-OSCS. Access in: 13/11/2024

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