Highly Conductive and Highly Dispersed Polythiophene Nanoparticles for Fabricating High-Performance Conductive Adhesives,ACS Applied Electronic Materials

当前位置： X-MOL 学术 › ACS Appl. Electron. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Highly Conductive and Highly Dispersed Polythiophene Nanoparticles for Fabricating High-Performance Conductive Adhesives
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-08-07 , DOI: 10.1021/acsaelm.0c00457
Ge Cao _{1,

2} , Huahua Cui ₁ , Linlin Wang ₃ , Ting Wang ₁ , Yanqing Tian ₁

Affiliation

The continuous advancement of modern electronic equipment requires increasing the conductivity of electrically conductive adhesives (ECAs), but the gap between discrete silver flakes in conventional ECAs considerably hinder electron transport. In this work, we demonstrated 1500-fold enhancement in electrical conductivity by adding a kind of polythiophene nanoparticle (PTh nanoparticles) in the polyurethane-based ECAs with an optimal value of 3.2 × 10⁴ S/cm. These PTh nanoparticles have exceptionally high conductivity and are capable of forming a stable colloidal suspension in various kinds of organic solvents. These properties enable PTh nanoparticles to be well-distributed in the polymer matrix and enable gap-filling among Ag flakes to fabricate high-performance ECAs. In the presence of PTh nanoparticles, the resulting ECA has not only outstanding conductivity but also excellent electrical stability under high mechanical deformation. The electrical resistivity of the pattern made by the PTh nanoparticles-containing ECAs remained stable after being wrapped in a 6 mm bend radius for over 7500 cycles or pressed under 1000 kPa. In addition, when the ECAs were stored for 2 weeks at 80 °C and 60% relative humidity, no significant change in conductivity of the ECAs was observed. A flexible printed circuit was fabricated using the above-mentioned ECAs containing PTh nanoparticles, demonstrating their potential for advanced flexible electronic devices.

中文翻译：

高导电性和高度分散的聚噻吩纳米颗粒，用于制备高性能导电胶

现代电子设备的不断发展要求增加导电胶（ECA）的导电性，但是传统ECA中离散的银薄片之间的间隙极大地阻碍了电子传输。在这项工作中，我们通过在聚氨酯基ECA中添加一种最佳值为3.2×10 ⁴的聚噻吩纳米颗粒（PTh纳米颗粒），证明了电导率提高了1500倍。S /厘米这些PTh纳米粒子具有极高的电导率，并且能够在各种有机溶剂中形成稳定的胶体悬浮液。这些特性使PTh纳米粒子能够在聚合物基质中很好地分布，并能够在Ag薄片之间填充间隙，从而制造出高性能的ECA。在PTh纳米粒子的存在下，所得ECA不仅具有出色的导电性，而且在高机械变形下也具有出色的电稳定性。由含PTh纳米粒子的ECA制成的图形的电阻率在6 mm弯曲半径内包裹7500多个循环或在1000 kPa以下压制后保持稳定。此外，当ECA在80°C和60％相对湿度下保存2周时，ECA的电导率没有明显变化。

更新日期：2020-09-22

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11