EFFECT OF Br– AND Cl– IONS ON MORPHOLOGY AND PROPERTIES  OF SILVER NANOWIRE

Lưu Bá Hoàng Anh; Nguyễn Thi Hồng Nhung; Nguyễn Đăng Tuyên; Nguyễn Duy Cường

doi:10.34238/tnu-jst.12964

EFFECT OF Br– AND Cl– IONS ON MORPHOLOGY AND PROPERTIES OF SILVER NANOWIRE

About this article

Received: 02/06/25 Revised: 24/10/25 Published: 27/10/25

Authors

1. Luu Ba Hoang Anh, Hanoi University of Science and Technology
2. Nguyen Thi Hong Nhung, Hanoi University of Science and Technology
3. Nguyen Dang Tuyen, Hanoi University of Science and Technology
4. Nguyen Duy Cuong , Hanoi University of Science and Technology

Abstract

In this study, we investigated the effect of the molar ratio between KBr and NaCl on the diameter and properties of silver nanowires (AgNWs). Here, AgNWs were synthesized via the polyol method, and then transparent conductive electrodes AgNWs were fabricated by a simple doctor-blade coating method. As the molar ratio of KBr/NaCl increased, the diameter of the silver nanowires increased, and the obtained product contained AgNWs and large AgBr_1-xCl_xparticles. Moreover, the electrical and thermal properties of the AgNWs electrode were significantly affected. The sheet resistance decreased from 8.000 Ω/ with Br^–/Cl^–of 0:0 to 24 Ω/ with Br^–/Cl^–of 0.5:1. The results showed that the optimal KBr/NaCl ratio was 0.5:1. The obtained AgNWs exhibited high purity, with diameters in the range of 30 – 40 nm, excluding AgBr_1-xCl_xnanoparticles. Notably, Joule heating at 7 V voltage is approximately 120 ℃. These results demonstrate that the Br⁻/Cl⁻ ion ratio significantly influences the properties of silver nanowires. Furthermore, the obtained AgNWs show great potential for application in transparent conductive electrodes.

Keywords

Silver nanowire; Polyol method; Transparent conductive electrode; Molar ratio KBr/NaCl; Doctor-blade coating

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DOI: https://doi.org/10.34238/tnu-jst.12964

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