Transparent Multifunctional MXene/InGaTiO Films for Broadband Electromagnetic Interference Shielding, Temperature...

Area of Science:

• Materials Science
• Nanotechnology
• Condensed Matter Physics

Background:

• Next-generation electronic devices require thin films with high optical transmittance, electromagnetic interference (EMI) shielding, mechanical flexibility, sensing, and heating capabilities.
• MXene-based thin films are promising but susceptible to degradation.

Purpose of the Study:

• To fabricate and characterize highly conductive and stable MXene/indium-gallium-titanium oxide (IGTO) thin films.
• To enhance the performance of MXene thin films for multifunctional electronic applications.

Main Methods:

• Uniform deposition of IGTO on MXene using a room-temperature plasma damage-free sputtering process.
• Characterization of film properties including sheet resistance, optical transmittance, EMI shielding effectiveness, mechanical flexibility, Joule-heating, and temperature sensing.

Main Results:

• The best-performing MXene/IGTO film (300 nm) achieved a sheet resistance of 24.2 Ω sq^-1 and 73.2 % transmittance.
• Achieved X-band EMI shielding effectiveness of >25.12 dB, a significant improvement over pristine MXene.
• Demonstrated robust mechanical flexibility, high Joule-heating, and temperature-sensing capabilities.

Conclusions:

• The developed transparent MXene/IGTO films exhibit excellent multifunctional properties.
• The IGTO passivation layer effectively prevents MXene degradation, enhancing film stability.
• These hybrid films show high potential for applications in smart windows and wearable electronic systems.