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Copper inks for printed electronics: a review.

Xianghui Zeng¹, Pei He¹, Minglu Hu¹

¹Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, People's Republic of China. pei.he@csu.edu.cn.

|October 27, 2022

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Copper-based inks offer a low-cost, highly conductive solution for flexible printed electronics. This review explores their preparation, printing, and crucial antioxidation strategies for enhanced reliability.

Area of Science:

Materials Science
Nanotechnology
Electronics Engineering

Background:

Conductive inks are vital for flexible printed electronics due to their adaptability and ease of large-scale fabrication.
Copper-based inks are promising candidates for conductive layers, offering high conductivity and low cost.
The long-term reliability of copper-based nanomaterials against oxidation remains a key challenge.

Purpose of the Study:

To provide a comprehensive review of copper inks for printed electronics.
To cover ink preparation, printing techniques, sintering, and antioxidation strategies.
To discuss the applications and future challenges of copper-based inks.

Main Methods:

Review of existing literature on copper ink preparation.

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Analysis of various printing techniques and post-annealing strategies.

Summary of antioxidation methods for copper nanomaterials.

Main Results:

Copper inks demonstrate high conductivity and suitability for large-scale manufacturing.
Diverse preparation methods and printing techniques are available.
Antioxidation strategies are crucial for stabilizing copper nanomaterials' properties.

Conclusions:

Copper-based inks are a viable and cost-effective option for printed electronics.
Further research into antioxidation is necessary to ensure long-term performance.
Copper inks hold significant potential for applications in sensors, electrodes, and transistors.