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Photothermal conversion device

A light-to-heat conversion and light-to-heat conversion layer technology, applied in the field of light conversion, can solve the problems of high cost, high price, dispersion of nanomaterials, etc., and achieve the effect of good solubility and low cost

Inactive Publication Date: 2017-05-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reported materials with photothermal conversion effects include carbon nanotubes, graphene, ferroferric oxide, gold nanoparticles, etc., all of which have many limitations in current research and future practical applications, such as the dispersion of nanomaterials. problem; costly, expensive problem

Method used

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Examples

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Effect test

preparation example Construction

[0015] Specifically, the preparation method of the light-to-heat conversion layer 14 includes:

[0016] providing a light-to-heat conversion layer precursor solution, the light-to-heat conversion layer precursor solution including a solvent and a perovskite structure material dispersed in the solvent;

[0017] coating the light-to-heat conversion layer precursor solution on the substrate 12; and

[0018] The solvent is removed to form a light-to-heat conversion layer 14 on the substrate 12 .

[0019] The solvent is preferably at least one of organic solvents N,N-dimethylformamide (DMF) and γ-butyrolactone.

[0020] Specifically, the coating may include dropping the light-to-heat conversion layer precursor solution on the substrate 12, spin-coating on the substrate 12, or taking out the substrate 12 after being immersed in the light-to-heat conversion layer precursor solution.

[0021] The solvent can be removed by heating to dry the solvent, and the heating temperature is pr...

Embodiment 1

[0024] Methylamino lead iodide (CH 3 NH 3 PB 3 ) is dissolved in DMF to form a light-to-heat conversion layer precursor solution. The light-to-heat conversion layer precursor solution was coated on the surface of the glass substrate, and the DMF was removed by heating at 100°C, thereby obtaining a layer of black CH on the surface of the glass substrate. 3 NH 3 PB 3 perovskite film, the CH 3 NH 3 PB 3 The perovskite film is the light-to-heat conversion layer 14 . see figure 2 , will load with CH 3 NH 3 PB 3 The glass substrate of the perovskite film is placed under simulated sunlight at room temperature with a light intensity of 120W / cm 2 , and the temperature of the glass substrate is monitored in real time with an infrared thermal imager. After 20 seconds of light, the load has CH 3 NH 3 PB 3 The temperature of the glass substrate of the perovskite film can reach 58 °C.

Embodiment 2

[0026] Methylamino lead iodide (CH 3 NH 3 PB 3 ) is dissolved in DMF to form a light-to-heat conversion layer precursor solution. The photothermal conversion layer precursor solution was coated on the surface of the polymer film, and the DMF was removed by heating at 100°C, thereby obtaining a layer of black CH on the surface of the polymer film. 3 NH 3 PB 3 perovskite film, the CH 3 NH 3 PB 3 The perovskite film is the light-to-heat conversion layer 14 . see image 3 , will load with CH 3 NH 3 PB 3 The polymer film of the perovskite film is placed under simulated sunlight at room temperature, and the light intensity is 120W / cm 2 , and monitor the temperature of the polymer film in real time with an infrared thermal imager, after 20 seconds of light, the load has CH 3 NH 3 PB 3 The temperature of the glass substrate of the perovskite film can reach 56 °C. When the light intensity is 150W / cm 2 , monitor the temperature of the polymer film in real time with an i...

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Abstract

The invention provides a photothermal conversion device. The photothermal conversion device comprises a photothermal conversion layer, wherein the photothermal conversion layer comprises a perovskite structural material.

Description

technical field [0001] The invention relates to the field of light conversion, in particular to a light-to-heat conversion device. Background technique [0002] Energy shortage is a major problem faced by mankind for a long time, and it is also an important factor restricting my country's economic development. The development of new energy, especially the development of clean energy is an important theme in today's era. As a clean energy source, solar energy has the following characteristics: 1) Solar energy is the most abundant energy that can be developed and utilized by human beings, and it is inexhaustible; 2) The sun shines all over the earth and can be developed and Utilization, no transportation problem; 3) solar energy, as a clean energy source, will not pollute the environment and affect the ecology when it is developed and utilized. The utilization of solar energy mainly includes photothermal conversion, photochemical conversion and photoelectric conversion. Pho...

Claims

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Application Information

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IPC IPC(8): F24J2/48
CPCY02E10/40F24S70/25
Inventor 吉岩乔娟危岩杨洋马福生
Owner TSINGHUA UNIV
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