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- Title
Separating nucleation from growth for high-yield synthesis of thin silver nanowires.
- Authors
Jiang, Yu; Tao, Ran; Zhang, Haotian; Wan, Neng; Yang, Ying; Gu, Dawei; Zhang, Tianyou; Rui, Yunjun; Xu, Jun
- Abstract
Inactive gas (N2 or Ar) and oxygen scavenger (Fe2+ or Cu+) are used for the synthesis of silver nanowires (AgNWs) with thin diameter (< 30 nm) and high aspect ratio (> 1000), but the yield is always low. Due to the oxidative etching, oxygen largely influences silver nanostructures not only in the nucleation process but also in the growth period. Herein, we systematically studied AgNW synthesis under the condition of an atmosphere with different oxygen contents (O2, air, and N2). We separated the formation of Ag-twinned seeds and nanoparticles in the incubation and the elongation of AgNWs in the growth, which are both sensitive to the oxygen content. AgNWs with 28.5 nm diameter, 2500 aspect ratio, and 91% yield were obtained when the sample was protected in N2 (incubation) and refluxed with air (growth), resulting in a conductive film with a sheet resistance of 48 Ω/sq at a transmittance of 97.0%, comparable to that of ITO. The growth mechanism of such high-quality AgNWs was discussed.
- Subjects
DISCONTINUOUS precipitation; NANOWIRES; SYNTHESIS of nanowires; SILVER; NITROGEN
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 1, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-09454-5