Numerical and experimental investigations on intense pulsed light sintering of silver nanoparticle inks for printed electronics

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2022-06-01 DOI:10.1016/j.ijthermalsci.2022.107507

Yupeng Yang, Nan Bai, Tong Cao, Xiaolai Zhang, Yuzhe Gao, Jie Zhang, Pengbing Zhao, Jin Huang

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引用次数: 1

Abstract

Intense pulsed light (IPL) sintering has the advantages of high efficiency and selective heating for silver nanoparticles (AgNPs) inks, which could be widely used in printed electronics. In this contribution, the heat transfer and diffusion mechanisms of AgNPs during IPL sintering are quantitatively investigated with a mathematic model combined transient heat transfer and molecular dynamics (MD) method and experiments. The results show that only 51.522% of the IPL radiation energy is absorbed by the AgNPs. During IPL sintering, the temperature of AgNPs rises significantly, whereas the temperature of polyamide substrate keeps almost unchanged, demonstrating that IPL is feasible for thermal-sensitive substrates. The MD modeling results show that sintering neck between AgNPs forms and grows rapidly at the beginning of sintering, then remains relative stable. Accordingly, the electrical resistivity of the AgNPs drops rapidly to a stable value. In addition, the effects of IPL sintering parameters are studied and the results show that increasing IPL energy and reducing IPL duration could increase the sintering performance of AgNPs inks. Finally, an antenna is fabricated using AgNP inks and IPL sintering technology. The experimentally measured performance of the antenna agrees well with the theoretical analysis. Our simulation and experimental results demonstrate that IPL is suitable for sintering of AgNPs inks for flexible electronics.

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印刷电子用强脉冲光烧结纳米银油墨的数值与实验研究

强脉冲光烧结(IPL)具有制备银纳米颗粒(AgNPs)油墨效率高、可选择性加热等优点，在印刷电子领域具有广泛的应用前景。本文采用瞬态传热与分子动力学(MD)相结合的数学模型和实验方法，对AgNPs在IPL烧结过程中的传热和扩散机制进行了定量研究。结果表明，AgNPs仅吸收了IPL辐射能量的51.522%。在IPL烧结过程中，AgNPs的温度显著升高，而聚酰胺衬底的温度基本保持不变，表明IPL在热敏衬底上是可行的。MD模拟结果表明，AgNPs之间的烧结颈在烧结初期形成并迅速生长，随后保持相对稳定。因此，AgNPs的电阻率迅速下降到一个稳定的值。此外，研究了IPL烧结参数对AgNPs油墨烧结性能的影响，结果表明，增加IPL能量和减少IPL持续时间可以提高AgNPs油墨的烧结性能。最后，利用AgNP油墨和IPL烧结技术制备了天线。实验测量的天线性能与理论分析吻合较好。仿真和实验结果表明，IPL技术适用于柔性电子器件中AgNPs油墨的烧结。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.