{
  "abstract": "Conjugated polymers are promising thermoelectric materials offering solution processability, flexibility, and versatile synthesis. However, n-type polymers lag behind their p-type counterparts. Herein, we demonstrate that the combination of precise doping with control over crystalline contact plane, orientation, and microstructure helps design efficient n-type films of a naphthalenediimide-bithiazole-based copolymer (PNDIOE7-Tz2). Favorable fibrillar morphology and enhanced planarity lead to tight packing in films doped with N-DMBI, resulting in a high electrical conductivity σ ≈ 10 S cm−1. GIWAXS indicates a predominantly face-on orientation in pristine films with a short π–π stacking distance of 3.47 Å. Incremental concentration doping enhances the σ to 45 S cm−1 with a power factor (PF≈17.5 µW m−1 K−2). Rubbing alignment causes a detrimental shift from face-on to edge-on, reducing σ below 5 S cm−1 and PF below 4 µW m−1 K−2. Subsequent solvent vapor annealing converts aligned crystallites to mixed face-on/edge-on, promoting a strong enhancement of TE performance with a high PF up to 41µW m−1 K−2, among the highest reported for n-type polymers. This work underscores that controlling the contact plane effectively decouples σ and S for high-performance n-type polymer thermoelectrics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "name": "Suhao Wang"
    },
    {
      "name": "Saïd Oummouch"
    },
    {
      "name": "Huan Wei"
    },
    {
      "name": "Karl Thorley"
    },
    {
      "name": "Adam Marks"
    },
    {
      "name": "Arianna Magni"
    },
    {
      "name": "Xiuming Sun"
    },
    {
      "name": "Alessandra Pistillo"
    },
    {
      "name": "Bruno Schmaltz"
    },
    {
      "name": "Olivier Bardagot"
    },
    {
      "name": "Sabine Ludwigs"
    },
    {
      "name": "Alberto Salleo"
    },
    {
      "name": "Yuanyuan Hu"
    },
    {
      "name": "Martin Brinkmann"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bxschpjtfmpx2.bib",
  "cited_by": 1,
  "doi": "10.1002/adfm.77341",
  "fulltext_url": null,
  "id": "bxschpjtfmpx2",
  "issns": [
    "1616-301X",
    "1616-3028"
  ],
  "landing_url": "https://hal.science/hal-05727926v2",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "2505|Advanced Thermoelectric Materials and Devices"
    ]
  ],
  "openalex": "W7171737184",
  "pdf_url": "https://hal.science/hal-05727926/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-29",
  "publisher": "Wiley",
  "ris": "https://research.draconitic.com/paper/bxschpjtfmpx2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:55Z",
      "native_id": "hal-05727926",
      "source": "hal",
      "url": "https://hal.science/hal-05727926v2"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Advanced Thermoelectric Materials and Devices",
      "subfield": "materials-polymers"
    }
  ],
  "title": "High‐Performance n‐Type Organic Thermoelectrics Enabled by Control Over Microstructure, Orientation and Contact Plane in Naphthalenediimide‐Bithiazole‐Copolymer Films",
  "title_text": "High‐Performance n‐Type Organic Thermoelectrics Enabled by Control Over Microstructure, Orientation and Contact Plane in Naphthalenediimide‐Bithiazole‐Copolymer Films",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:55Z",
  "url": "https://research.draconitic.com/paper/bxschpjtfmpx2",
  "venue": "Advanced Functional Materials",
  "versions": []
}