Conductive Paste Inks Prepared Using Ionic-Liquid-Stabilized Metal Nanoparticle Fluids and their Sintering Effect

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2023-08-27 DOI:10.1007/s13391-023-00451-2

Tae-Gyun Kwon, Younghoon Kim

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Abstract

Conductive paste inks have received considerable attention as facile conductive materials for the formation of electrode layers. However, conventional paste inks result in films with poor surface morphology. In addition, they require a high thermal annealing temperature for achieving high electrical conductivity because of their organic/inorganic composite structure, in which nanosized metal particles and polymeric organic binders are mixed in solvents. In this work, we prepare solvent-free and polymeric-binder-free metal nanoparticle (NP) fluids, which can be used as facile conductive pastes for forming an electrode layer after sintering at a considerably low temperature. We employ thiol-terminated imidazolium-type ionic liquid (IL-SH) molecules with a small molecular weight and fluidic behavior as the surface ligands of Ag NPs. IL-SH-stabilized Ag NPs exhibit fluidic behavior and metallic conducting properties at a considerably low sintering temperature of 250 °C.

Graphical Abstract

Abstract Image

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离子液体稳定金属纳米粒子制备导电浆料及其烧结效果

导电浆状油墨作为一种易于形成电极层的导电材料，受到了广泛关注。然而，传统浆状油墨形成的薄膜表面形态不佳。此外，由于其有机/无机复合结构，即纳米级金属颗粒和聚合物有机粘合剂在溶剂中混合，因此需要较高的热退火温度才能实现高导电性。在这项工作中，我们制备了不含溶剂和聚合物粘合剂的金属纳米粒子（NP）流体，这种流体可用作导电浆料，在相当低的温度下烧结后形成电极层。我们采用分子量小、流动性好的硫醇端咪唑离子液体（IL-SH）分子作为银纳米粒子的表面配体。IL-SH稳定的Ag NPs在250 °C的相当低的烧结温度下表现出流体行为和金属导电特性。

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.