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Polymer Semiconductors: Synthesis, Characterization, and Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (15 April 2025) | Viewed by 811

Special Issue Editor


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Guest Editor
School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119 China
Interests: organic field-effect transistors (OFETs); organic electrochemical transistors (OECTs); organic thermoelectric devices (OTEs); organic photovoltaic cells (OPVs)

Special Issue Information

Dear Colleagues,

Polymeric semiconductor materials offer immense potential in flexible electronics, logic circuits, wearable tech, and bioelectronics due to their modifiable chemical structures, solution processability, flexibility, and biocompatibility. They complement traditional silicon-based semiconductors. Recent decades have seen significant advancements in their performance through novel structural designs and synthesis methods. Their performance relies on both chemical structure and solid-state multi-level microstructures. Polymeric semiconductors find wide applications in energy storage, conversion, and catalysis. Key applications include organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs), organic electrochemical transistors (OECTs), organic thermoelectric devices (OTEs), and organic photovoltaic cells (OPVs). This Special Issue focuses on the current application status of polymeric semiconductor materials in organic electronic devices, highlighting research progress in designing, synthesizing, characterizing, and exploring novel applications of new semiconductor polymers.

Dr. Jianfeng Li
Guest Editor

Manuscript Submission Information

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Keywords

  • conjugated polymers
  • imide
  • N-type polymer semiconductors
  • organic field-effect transistors
  • organic thermoelectrics

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Published Papers (1 paper)

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Research

15 pages, 3856 KiB  
Article
4-Iodobenzonitrile as Effective Solid Additive for High-Efficiency Polymer Solar Cells
by Jiayu Li, Chuanchen Cai, Yuechen Li, Changbiao Ma, Sergio Gámez-Valenzuela, Yixiao Liu, Jianfeng Li, Xiaochen Wang and Yongfang Li
Polymers 2025, 17(10), 1386; https://doi.org/10.3390/polym17101386 - 18 May 2025
Viewed by 234
Abstract
Solid additive engineering is a well-established and effective strategy for enhancing active layer morphology in polymer solar cells (PSCs), thereby improving their power conversion efficiency (PCE). However, the availability of effective solid additive molecules remains limited, especially those combining simple structural units with [...] Read more.
Solid additive engineering is a well-established and effective strategy for enhancing active layer morphology in polymer solar cells (PSCs), thereby improving their power conversion efficiency (PCE). However, the availability of effective solid additive molecules remains limited, especially those combining simple structural units with a large dipole moment to promote strong interactions with active materials. In this study, we introduce 4-iodobenzonitrile (IBZN), a commercially available, low-cost, and structurally simple molecule with a high dipole moment (3.33 debye), as a solid additive for PSCs. Theoretical calculations, ultraviolet–visible (UV-Vis) spectroscopy experiments, and a morphology analysis demonstrate that IBZN forms strong interactions with L8-BO, subsequently enhancing the packing mode and crystallization. The incorporation of IBZN into PM6:L8-BO-based PSCs resulted in an increased fill factor (FF) of 79.54% and a boosted PCE from 17.49% to 18.77%. Furthermore, IBZN has also demonstrated outstanding regulatory effects in systems based on other Y-series acceptors, such as Y6 and BTP-ec9. This study not only introduces a structurally simple solid additive molecule characterized by a large dipole moment but also offers valuable insights for the subsequent development of novel solid additives aimed at enhancing the morphology and efficiency of PSCs. Full article
(This article belongs to the Special Issue Polymer Semiconductors: Synthesis, Characterization, and Applications)
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