One-Step Synthesis of Silver Nanowires with Ultra-Long Length and Thin Diameter to Make Flexible Transparent Conductive Films

Materials

Yuxiu Li¹  Shuailong Guo¹  Ximin Yuan¹  Hongwei Yang¹  Chuan Wang¹  Yunxiu Chao¹ 

[1] State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China;

关键词: Silver nanowires;    Solvothermal;    Transparent conductive film;    Sheet resistance;   

DOI  :  10.3390/ma12030401

来源: DOAJ

【 摘 要 】

High aspect ratio silver nanowires (AgNWs) with ultra-long length and thin diameter were synthesized through bromine ion (Br⁻)-assisted one-step synthesis method. The bromine ions were used as pivotal passivating agent. When the molar ratio of Br⁻/Cl⁻ was 1:4, the average diameter of AgNWs was as low as ~40 nm, the average length was as high as ~120 μm, and the aspect ratio reached 2500. Networks of AgNWs were fabricated using as-prepared high-quality AgNWs as conducting material and hydroxyethyl cellulose (HEC) as the adhesive polymer. As a result, a low sheet resistance down to ~3.5 Ω sq⁻¹ was achieved with a concomitant transmittance of 88.20% and a haze of 4.12%. The ultra-low sheet resistance of conductive film was attributed to the long and thin AgNWs being able to form a more effective network. The adhesion of the AgNWs to the substrate was 0/5B (ISO/ASTM). The insights given in this paper provide the key guidelines for bromine ion-assisted synthesis of long and thin AgNWs, and further designing low-resistance AgNW-based conductive film for optoelectronic devices.

【 授权许可】

Unknown