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Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
Published on: November 5, 2015
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Transparent Electrothermal Heaters Based on Vertically-Oriented Graphene Glass Hybrid Materials
Lingzhi Cui1,2, Kejian Cui3, Haina Ci4,5,6
1Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. cuilz-cnc@pku.edu.cn.
Nanomaterials (Basel, Switzerland)
|April 10, 2019
Summary
Vertically-oriented graphene (VG) films grown on glass offer tunable electrical and optical properties for transparent heating devices. These films demonstrate efficient electrothermal heating, suitable for defogging and defrosting applications.
Area of Science:
- Materials Science
- Nanotechnology
- Applied Physics
Background:
- Transparent heating devices are crucial for various applications.
- Achieving suitable resistance in heating materials is key for performance.
- Vertically-oriented graphene (VG) films present potential for transparent electrothermal applications.
Purpose of the Study:
- To develop high-performance transparent heating devices using vertically-oriented graphene (VG) films.
- To investigate the tunability of optical and electrical properties of VG films.
- To evaluate the electrothermal performance of VG films for practical applications.
Main Methods:
- Direct growth of VG films on soda-lime glass via radio-frequency plasma-enhanced chemical vapor deposition (rf-PECVD).
- Optimization of growth parameters (e.g., growth time, carrier gas flow) to tune film properties.
- Fabrication and testing of VG film-based heating devices under varying voltages.
Main Results:
- VG films with tunable transmittance (~73% and ~43%) and sheet resistance (~3.9 KΩ/□ and ~0.76 KΩ/□) were successfully fabricated.
- A device with ~73% transmittance reached 55 °C at 80 V.
- A device with ~43% transmittance achieved 108 °C at 60 V with a heating rate of 2.6 °C/s.
Conclusions:
- Tunable VG films on glass exhibit promising electrothermal heating capabilities.
- Good adhesion and high heating efficiency make VG films suitable for defrosting and defogging.
- These transparent graphene-based heaters are viable for diverse electrothermal applications.
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