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Colorful solar photo-thermal conversion element

A light-to-heat conversion and solar energy technology, applied in the fields of construction, clean energy, and outdoor decoration, to achieve high solar energy conversion efficiency

Pending Publication Date: 2022-06-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional light-to-heat conversion elements are perfected in terms of light-to-heat conversion efficiency and environmental stability, and few light-to-heat conversion elements are combined with color decoration

Method used

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  • Colorful solar photo-thermal conversion element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A color solar photothermal conversion element comprises a substrate, a reflection layer, a phase modulation layer, an absorption layer and an anti-reflection layer in order from bottom to top, and light is incident from the anti-reflection layer.

[0045] Among them, the base material is K9 glass; the reflection layer material is silver with a thickness of 100nm; the phase modulation layer material is silicon oxide with a thickness of 87nm; the absorption layer material is chromium with a thickness of 35nm; the anti-reflection layer is made of titanium oxide with a thickness of 100nm.

[0046] The near-infrared absorption spectrum of the color solar photothermal conversion element prepared in this example is as follows figure 2 shown. Depend on figure 2 It can be seen that the light in the near-infrared band (800-2500 nm) is almost completely absorbed to realize photothermal conversion, and the average absorption rate reaches 92%. The substrate and film materials c...

Embodiment 2

[0048] Example 2: Preparation of Colored Solar Photothermal Conversion Elements with Different Phase Modulation Layer Thicknesses

[0049] A color solar photothermal conversion element comprises a substrate, a reflection layer, a phase modulation layer, an absorption layer and an anti-reflection layer in order from bottom to top, and light is incident from the anti-reflection layer.

[0050] Among them, the base material is K9 glass; the reflective layer material is silver with a thickness of 100nm; the phase modulation layer is made of silicon oxide with a thickness of 105nm, 125nm, 145nm, 165nm, 185nm and 205nm respectively; the absorption layer material is chromium with a thickness of 35nm ; The material of the anti-reflection layer is titanium oxide, and the thickness is 100nm.

[0051] The near-infrared absorption spectra of the color solar photothermal conversion element prepared in this example under different phase modulation layer thicknesses are as follows: Figure ...

Embodiment 3

[0053] Example 3: Preparation of Colored Solar Photothermal Conversion Elements with Different Antireflection Layer Thicknesses

[0054] A color solar photothermal conversion element comprises a substrate, a reflection layer, a phase modulation layer, an absorption layer and an anti-reflection layer in order from bottom to top, and light is incident from the anti-reflection layer.

[0055] Among them, the base material is K9 glass; the reflection layer material is silver with a thickness of 100nm; the phase modulation layer is made of silicon oxide with a thickness of 87nm; the absorption layer is made of chromium with a thickness of 35nm; 100 nm, 120 nm, 140 nm, 160 nm, 180 nm and 200 nm.

[0056] The near-infrared absorption spectra of the color solar photothermal conversion element prepared in this example under different thicknesses of the antireflection layer are as follows Image 6 shown. Depend on Image 6 It can be seen that the light in the near-infrared band (800-...

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Abstract

The invention provides a color solar photo-thermal conversion element. The color solar photo-thermal conversion element comprises a substrate, and a substrate, a reflecting layer, a phase modulation layer, an absorbing layer and an antireflection layer which are sequentially arranged on the substrate from bottom to top. Wherein the reflecting layer, the phase modulation layer and the absorption layer form an asymmetric Fabry-Perot cavity structure, and high-efficiency absorption of a near-infrared band is realized. And by changing the thickness of the phase modulation layer, destructive interference or constructive interference can be alternately realized so as to realize high absorption or high reflection, and meanwhile, the resonant wavelength of the corresponding visible wave band is adjusted so as to realize different display colors. In addition, along with the gradual change of the thickness of the anti-reflection layer, the anti-reflection wave band of the photo-thermal device gradually shifts, so that variable visual colors are realized. The photo-thermal conversion element disclosed by the invention has a color decoration function while realizing high-efficiency solar energy absorption, can be widely applied to the aspects of photo-thermal conversion, clean energy, building decoration and the like, and makes contributions to the fields of economy, social development, science and technology and the like.

Description

technical field [0001] The invention belongs to the technical fields of clean energy, outdoor decoration, construction and the like, and particularly relates to a color solar energy photothermal conversion element. Background technique [0002] As the most important basic energy among various renewable energy sources, solar energy application can greatly reduce the use of fossil fuels and play an increasingly important role in our lives. Photothermal conversion is an efficient and widespread application of solar energy, which converts solar energy into thermal energy by heating a medium outdoors during the day. The effective absorption of sunlight by the photothermal conversion device is the key to realize photothermal conversion. [0003] The traditional photothermal conversion is to use the photothermal conversion coating on the surface of the collector to absorb the incident solar radiation and convert it into heat energy. The graded Al-N / Al coating disclosed in Chinese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S70/60
CPCF24S70/60F24S2070/62Y02E10/40
Inventor 沈伟东陈潇杨陈楹章岳光王海兰郑婷婷王雨思刘雨洁
Owner ZHEJIANG UNIV
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