Solar energy selective absorber materials utilizing multiple photonic heterostructure interfaces

A technology of heterostructure and absorbing materials, applied in the field of solar selective absorbing materials, can solve the problems of low absorption efficiency, low photothermal conversion efficiency, poor high temperature resistance, etc., achieve simple structure, improve photothermal conversion efficiency and performance excellent effect
CN111609573BActive Publication Date: 2021-04-20ROCKET FORCE UNIV OF ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ROCKET FORCE UNIV OF ENG
Publication Date
2021-04-20

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Abstract

The invention discloses a solar energy selective absorption material utilizing multiple photon heterogeneous structure interface, and its heterogeneous film system structure is: A[T 1 A] n T 2 [BC] m T 3 [DE] k , including: ①Interference absorption layer structure A[T 1 A] n , ② Visible light control film structure [BC] m , ③ Infrared control film [DE] k , ④ Heterostructure interfacial absorbing layer T 2 , T 3 ; wherein, A, B, C, D, E are all dielectric layers, and the periodic coefficients m, n, and k of the film layers are integers with a value ≥ 2. The present invention utilizes the local state and photon band gap effect of multiple photonic crystal heterostructure interfaces through a special photonic heterogeneous dielectric artificial structure composite material to control the propagation state of light waves in different wavelength ranges in the material structure, so that It has a high absorption rate for the visible light-near-infrared wavelength range of 0.3-2μm, but has high reflection characteristics in the mid-to-far infrared region of ≥2.5μm, taking into account the efficient absorption of solar radiation energy and the low emission loss of infrared thermal radiation, which is convenient Improve the light-to-heat conversion efficiency of solar energy.
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Description

technical field

[0001] The invention relates to a solar energy efficient selective absorption material utilizing multiple photon heterostructure interfaces, and belongs to the technical field of solar energy selective absorption materials. Background technique

[0002] The progress and development of human civilization are closely related to energy and cannot be separated. The current energy consumption in the world has far exceeded 6,000 gigawatts, and non-renewable fossil energy is already facing a serious crisis. As a clean and renewable new energy source, solar energy is the most effective way to solve the current global energy crisis and ecological imbalance. Solar energy is produced by thermonuclear fusion reaction, which brings "inexhaustible and inexhaustible" light and heat to the earth in the form of electromagnetic radiation. The heat collector is an important element in the light-to-heat conversion process, and the solar absorbing surface material of the heat c...

Claims

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