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Nanostructures/TiN layer/Al2O3 layer/TiN substrate configuration-based high-performance refractory metasurface solar
Pei Zeng1,2, Yuting Zhou3,4, Chonghao Zhang3,4
1State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
Scientific Reports
|October 29, 2024
Summary
This study presents a novel metasurface solar absorber using refractory materials. The design achieves over 91% absorption across a wide spectrum, offering a robust platform for efficient solar energy conversion.
Area of Science:
- Materials Science
- Nanotechnology
- Renewable Energy
Background:
- Metasurface solar absorbers are crucial for converting solar energy to thermal energy.
- Efficient and wide-spectrum absorption is key for advanced solar devices.
Purpose of the Study:
- To design and analyze a novel metasurface solar absorber configuration.
- To investigate the underlying mechanisms and performance characteristics of the proposed absorber.
Main Methods:
- Design of a multi-layered metasurface incorporating titanium nitride and aluminum oxide.
- Simulation and analysis of spectral absorption, field distributions, and resonance effects.
- Investigation of geometrical parameter tolerance, polarization, and incident angle sensitivity.
Main Results:
- Achieved average spectral absorption >91% and total solar absorption of 91.5% from 300-2500 nm.
- Attributed performance to synergistic surface plasmonic and Fabry-Pérot cavity resonance.
- Demonstrated large fabrication tolerance and insensitivity to polarization and incident angle.
Conclusions:
- The proposed refractory metasurface solar absorber offers excellent performance and design flexibility.
- This work provides a universal platform for designing efficient solar absorbers.
- The findings support the development of advanced green energy technologies.
