Kaikanov Marat, Kemelbay Aidar, Amanzhulov Bauyrzhan, Demeuova Gulzat, Akhtanova Gulnur, Bozheyev Farabi, Tikhonov Alexander
Nazarbayev University, Physics Department, 010000, Nur-Sultan, Kazakhstan.
National Laboratory Astana, Nazarbayev University, 010000, Nur-Sultan, Kazakhstan.
Nanotechnology. 2021 Apr 2;32(14):145706. doi: 10.1088/1361-6528/abd49e.
Silver nanowire (AgNW) networks have attracted particular attention as transparent conductive films (TCF) due to their high conductivity, flexibility, transparency, and large scale processing compatible synthesis. As-prepared AgNW percolating networks typically suffer from high contact resistance, requiring additional post-synthetic processing. In this report, large area irradiation with 200 ns short intense pulsed ion beam (IPIB) was used to anneal and enhance the conductivity of AgNW network, deposited on temperature-sensitive polyethylene terephthalate (PET) substrate. A TCF sheet resistance shows irradiation dose dependence, decreasing by four orders of magnitude and reaching a value of 70 Ω/sq without damaging the polymer substrate, which retained a transparency of 94%. The IPIB irradiation fused AgNW network into the PET substrate, resulting in a great adhesion enhancement. Heat transfer simulations show that the heat originates at the near-surface layer of the TCF and lasts an ultra-short period of time. Obtained experimental and simulation results indicate that the irradiation with IPIBs opens new perspectives in the low-temperature annealing of nanomaterials deposited on temperature-sensitive substrates.
银纳米线（AgNW）网络因其高导电性、柔韧性、透明度以及与大规模加工兼容的合成方法，作为透明导电薄膜（TCF）受到了特别关注。制备好的AgNW渗流网络通常存在高接触电阻问题，需要额外的合成后处理。在本报告中，使用200 ns短脉冲强离子束（IPIB）进行大面积辐照，以退火并提高沉积在温度敏感的聚对苯二甲酸乙二醇酯（PET）基板上的AgNW网络的导电性。TCF的表面电阻显示出辐照剂量依赖性，降低了四个数量级，达到70 Ω/sq的值，同时不会损坏聚合物基板，该基板保持了94%的透明度。IPIB辐照使AgNW网络与PET基板融合，从而显著提高了附着力。传热模拟表明，热量起源于TCF的近表面层，且持续时间极短。获得的实验和模拟结果表明，IPIB辐照为沉积在温度敏感基板上的纳米材料的低温退火开辟了新的前景。
