ITO/Cu-mesh transparent conductive film with high weather resistance and electromagnetic interference shielding effectiveness

• Published in: Bulletin of materials science Vol. 47; no. 2; p. 76
• Main Authors: Huang, Jung-Jie, Huang, Da-Zhan, Cho, Yun-Shao, Wang, Jui-Yu
• Format: Journal Article
• Language: English
• Published: Bangalore Indian Academy of Sciences 08.04.2024; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Corrosion tests; Effectiveness; Electromagnetic interference; Electromagnetic shielding; Engineering; Glass substrates; Materials Science; Metal oxides; Meteorological satellites; Oxidation; Polymers; Protective coatings; Radiation; Satellite communications; Superhigh frequencies; Temperature; Weather; transparent conductive film; Indium tin oxide; Cu mesh; electromagnetic interference (EMI) shielding
• ISSN: 0973-7669; 0250-4707; 0973-7669
• DOI: 10.1007/s12034-024-03145-z

Cu-mesh transparent conductive film offers high conductivity and transparency, making it suitable for electromagnetic interference (EMI) shielding. However, the oxidation of the Cu-mesh transparent conductive film in the atmosphere, limits its use. To solve this problem, the ITO/Cu-mesh transparent conductive film structure is employed to avoid Cu oxidation and improve EMI shielding performance in this study. By stacking the Cu mesh with ITO film, the resistivity and average X-band EMI shielding effectiveness can be improved from 7.89 × 10 −7  Ω cm and − 23.4 dB to 7.35 × 10 −7  Ω cm and − 25.6 dB, respectively. Additionally, we performed a 72-h salt corrosion test on the samples in accordance with the ASTM B-117 guidelines; the ITO/Cu-mesh film structure does not observe any obvious etching or oxidation. The results show that ITO films are suitable as a protective Cu-mesh coating and confirming that ITO/Cu-meshes have excellent weather resistance and EMI shielding effectiveness.