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Iodine ion modification enables Ag nanowire film with improved carrier transport properties and stability as high-performance transparent conductor

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Abstract

Ag nanowire (NW) film is the promising next generation transparent conductor. However, the residual long-chain polyvinylpyrrolidone (PVP, introduced during the synthesis of Ag NWs) layer greatly deteriorates the carrier transport capability of the Ag NW film and as well its long-term stability. Here, we report a one-step I− ion modification strategy to completely replace the PVP layer with an ultrathin, dense layer of I− ions, which not only greatly diminishes the resistance of the Ag NW film itself and that at interface of the Ag NW film and a functional layer (e.g., a current collect electrode) but also effectively isolates the approaching of corrosive species. Consequently, this strategy can simultaneously improve the carrier transport properties of the Ag NW film and its long-term stability, making it an ideal electric component in diverse devices. For example, the transparent heater and pressure sensor made from the I−-wrapped Ag NW film, relative to their counterparts made from the PVP-wrapped Ag NW film, deliver much improved heating performance and pressure sensing performance, respectively. These results suggest a facile post treatment approach for thin Ag NW film with improved carrier transport properties and long-term stability, thereby greatly facilitating its downstream applications.

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Acknowledgements

The authors greatly thank the financial support from the National Natural Science Foundation of China (Nos. 21872047, 21673070, and 22072039) and Hunan Key Laboratory of Two-Dimensional Materials (No. 2018TP1010).

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Authors and Affiliations

  1. Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China

    Jianfang Liu, Dongmei Deng, Yaomengli Xu, Moxia Li, Bingwu Liu, Xidong Duan, Yongchun Fu & Jiawen Hu

  2. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China

    Yongjie Ge

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  1. Jianfang Liu
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  2. Dongmei Deng
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  3. Yongjie Ge
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  6. Bingwu Liu
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Correspondence to Xidong Duan, Yongchun Fu or Jiawen Hu.

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Iodine ion modification enables Ag nanowire film with improved carrier transport properties and stability as high-performance transparent conductor

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Liu, J., Deng, D., Ge, Y. et al. Iodine ion modification enables Ag nanowire film with improved carrier transport properties and stability as high-performance transparent conductor. Nano Res. 15, 5410–5417 (2022). https://doi.org/10.1007/s12274-022-4107-y

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