Simultaneous single-peak and narrowband thermal emitters with the merits of a simple configuration and ease-of-fabrication provide a path to enhance the energy utilization efficiency while they remain a challenge. Here, we demonstrate simultaneous single-peak and narrowband thermal emission by hybridizing metal microstructures with polar dielectric substrates. The metal provides single-peak emission in a broad spectrum range and the polar dielectric assists narrowband operation. The measured peak emissivity of the single-peak transverse-magnetic-polarized emission is 0.94 with a quality factor of 19 at the wavelength of 11.2 μm, and the emission at all other wavelengths from 2.5 μm to 25 μm is significantly suppressed. The utilization of the refractory material (molybdenum) provides further possibility for such a device to operate at temperatures up to 600 °C. These simultaneous single-peak and narrowband thermal emitters suggest avenues for numerous energy-efficient applications including gas sensing, thermal sources, and thermophotovoltaics.
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26 August 2019
Research Article|
August 28 2019
Simultaneous single-peak and narrowband thermal emission enabled by hybrid metal-polar dielectric structures
Lu Cai;
Lu Cai
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University
, Hangzhou 310027, China
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Qiang Li
;
Qiang Li
a)
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University
, Hangzhou 310027, China
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Jianbo Yu;
Jianbo Yu
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University
, Hangzhou 310027, China
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Hao Luo;
Hao Luo
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University
, Hangzhou 310027, China
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Kaikai Du;
Kaikai Du
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University
, Hangzhou 310027, China
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Min Qiu
Min Qiu
2
Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University
, 18 Shilongshan Road, Hangzhou 310024, China
3
Institute of Advanced Technology, Westlake Institute for Advanced Study
, 18 Shilongshan Road, Hangzhou 310024, China
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Lu Cai
1
Qiang Li
1,a)
Jianbo Yu
1
Hao Luo
1
Kaikai Du
1
Min Qiu
2,3
1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University
, Hangzhou 310027, China
2
Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University
, 18 Shilongshan Road, Hangzhou 310024, China
3
Institute of Advanced Technology, Westlake Institute for Advanced Study
, 18 Shilongshan Road, Hangzhou 310024, China
a)
Email: [email protected]
Appl. Phys. Lett. 115, 093505 (2019)
Article history
Received:
April 22 2019
Accepted:
August 16 2019
Citation
Lu Cai, Qiang Li, Jianbo Yu, Hao Luo, Kaikai Du, Min Qiu; Simultaneous single-peak and narrowband thermal emission enabled by hybrid metal-polar dielectric structures. Appl. Phys. Lett. 26 August 2019; 115 (9): 093505. https://doi.org/10.1063/1.5100938
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