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Advanced materials (Deerfield Beach, Fla.). 2025 Mar 24:e2501653. doi: 10.1002/adma.202501653 Q126.82024

An n-Doped Organic Cross-Linked Electron Transport Layer with High Electrical Conductivity for High-Efficiency Tandem Organic Photovoltaics

用于高效叠层有机光伏的高电导率n型有机交联电子传输层 翻译改进

Yan Xu  1, Yifan Liao  1, Wenxuan Wang  2, Yupu Wang  1, Jia Wang  3, Zhaochen Suo  4, Feng Li  1, Ruochen Wang  1, Wang Ni  5, Bin Kan  3, Lingxian Meng  6, Xiangjian Wan  4, Yongsheng Chen  4, Jianhui Hou  2, Miaomiao Li  1, Yanhou Geng  1

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作者单位

  • 1 School of Materials Science and Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Science and Key Laboratory of Organic Integrated Circuits, Ministry of Education, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China.
  • 2 State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
  • 3 School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China.
  • 4 The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Tianjin Key Laboratory of Functional Polymer Materials, College of Chemistry, and Renewable Energy Conversion and Storage Center, Nankai University, Tianjin, 300071, China.
  • 5 Science and Technology on Power Sources Laboratory, Tianjin Institute of Power Sources, Tianjin, 300384, China.
  • 6 School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application Henan Innovation Center for Functional Polymer Membrane Materials, Zhengzhou University, Zhengzhou, 450001, China.

    • DOI: 10.1002/adma.202501653 PMID: 40123323

    摘要 Ai翻译

    With merits of good solution processability, intrinsic flexibility, etc, organic/organic interconnecting layers (ICLs) are highly desirable for tandem organic photovoltaics (OPVs). Herein, an n-doped cross-linked organic electron transport layer (ETL), named c-NDI-Br:PEI is developed, via a simple in situ quaternization reaction between bromopentyl-substituted naphthalene diimide derivative (NDI-Br) and polyethylenimine (PEI). Due to strong self-doping, c-NDI-Br:PEI films exhibit a high electrical conductivity (0.06 S cm-1), which is important for efficient hole and electron reombination in ICL of tandem OPVs. In addition, the cross-linked ETLs show strong work function modulation ability, and good solvent-resistance. The above features enable c-NDI-Br:PEI to function as an efficient ETL not only for single-junction OPVs, but also for tandem devices without any metal layer in ICL. Under solar radiation, the single-junction device with c-NDI-Br:PEI as ETL achieves a power conversion efficiency (PCE) of 18.18%, surpassing the ZnO-based device (17.09%). The homo- and hetero-tandem devices with m-PEDOT:PSS:c-NDI-Br:PEI as ICL exhibit remarkable PCEs of 19.06% and 20.06%, respectively. Under 808 nm laser radiation with a photon flux of 57 mW cm-2, the homo-tandem device presents a superior PCE of 38.5%. This study provides a new ETL for constructing all-solution-processed organic/organic ICL, which can be integrated in flexible and wearable devices.

    Keywords: electrical conductivity; electron transport layer; power conversion efficiency; tandem organic photovoltaics; work function.

    Keywords：High Electrical Conductivity; Tandem Organic Photovoltaics

    关键词：有机交联电子传输层; 高电导率; 串联有机光伏

    Copyright © Advanced materials (Deerfield Beach, Fla.). 中文内容为AI机器翻译，仅供参考！

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    期刊名：Advanced materials

    缩写：ADV MATER

    ISSN：0935-9648

    e-ISSN：1521-4095

    IF/分区：26.8/Q1

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    An n-Doped Organic Cross-Linked Electron Transport Layer with High Electrical Conductivity for High-Efficiency Tandem Organic Photovoltaics