A kind of preparation method of photothermal-pyroelectric heterojunction photovoltaic energy harvester

An energy harvester and pyroelectric technology, applied in photovoltaic power plants, photovoltaic power generation, photovoltaic modules, etc., can solve the problems of limiting the application of pyroelectric materials and less research, and achieve low cost, simple manufacturing process, and large solution volume Effect

Active Publication Date: 2022-07-29
NANJING UNIV OF SCI & TECH
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Problems solved by technology

Many scholars have conducted in-depth research on the pyroelectric performance of pyroelectric materials, but there are few studies on its application. Most of them use cold and hot water circulation, condensation and evaporation of water vapor under laboratory conditions to achieve temperature fluctuations. However, it is difficult to have temperature fluctuations with high frequency and high temperature gradient in real life, which greatly limits the application of pyroelectric materials in the field of energy harvesting.

Method used

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  • A kind of preparation method of photothermal-pyroelectric heterojunction photovoltaic energy harvester
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  • A kind of preparation method of photothermal-pyroelectric heterojunction photovoltaic energy harvester

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The preparation steps of the novel heterojunction photovoltaic energy harvester with photothermal-pyroelectric synergistic effect are as follows:

[0033] 1. Preparation of nano-scale Ti using a planetary ball mill 2 O 3 Powder, to formulate a uniform Ti 2 O 3 -PMMA original slurry, after vacuum defoaming treatment, take an appropriate amount of slurry and drop it on the optical glass, and use a scraper to prepare Ti on the optical glass 2 O 3 -PMMA film, after 24 hours of vacuum drying to obtain Ti 2 O 3 -PMMA film with a film thickness of 30 μm;

[0034] 2. The lead zirconate titanate piezoelectric material (Pb(Zr) was prepared by solid-phase sintering 1-x Ti x )O 3 , 00.52 Ti 0.48 O3 , using Ag electrodes to coat the upper and lower surfaces of the ceramic with an overall thickness of 0.3mm;

[0035] 3. Use epoxy resin to coat Ti 2 O 3 -PMMA film and PZT ceramics coated with Ag electrodes on both sides are bonded to make a new heterojunction photovoltaic...

Embodiment 2

[0037] Application of Novel Heterojunction Photovoltaic Energy Harvester with Photothermal-Pyroelectric Synergy Effect

[0038] A novel heterojunction photovoltaic energy harvester based on the photothermal-pyroelectric synergistic effect prepared in Example 1 was prepared, including a photothermal-pyroelectric synergistic effect. -The new heterojunction photovoltaic energy collector with pyroelectric synergistic effect, rectifier and external circuit are three parts, among which the upper electrode and lower electrode of the new heterojunction photovoltaic energy collector with photothermal-pyroelectric synergy effect are connected with the rectifier. The AC input terminal is connected, and the positive terminal of the DC output terminal of the rectifier is connected to an external circuit to form a complete circuit, which can convert solar energy into electrical energy and realize solar energy collection. The rectifier is a common commercial type, which can convert alternatin...

Embodiment 3

[0040] The performance of the new heterojunction photovoltaic energy harvesting device based on the photothermal-pyroelectric synergistic effect prepared in the example was tested. The effective area of ​​the device is 2.85cm 2 , using the optical switch to illuminate the energy collector for 30s and shading for 60s, and cool it in a natural windless state. The measured maximum ΔT is 6°C, the measured maximum voltage is 0.15V, and the maximum current density can reach 1000μA / m 2 . The results show that the new heterojunction photovoltaic energy collector with photothermal-pyroelectric synergistic effect can effectively collect solar energy. The proposal of the new heterojunction photovoltaic effect expands the application field of pyroelectric materials and improves the thermal Release electricity energy harvesting efficiency. And the new heterojunction photovoltaic energy harvester with photothermal-pyroelectric synergistic effect was tested under simulated sunlight with te...

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Abstract

The invention provides a photothermal-pyroelectric heterojunction photovoltaic energy collector and a preparation method thereof, belonging to the technical field of energy collection. The collector includes a photothermal area and a pyroelectric area; the photothermal area and the pyroelectric area are connected by epoxy resin; wherein, the pyroelectric area is composed of a pyroelectric material and an electrode layer, and the electrode The layers are coated on the upper and lower surfaces of the pyroelectric material to form a sandwich structure; the photothermal zone is a flexible film. The preparation method is as follows: adding an organic polymer to the photothermal material, mixing to obtain the photothermal material-organic polymer original slurry, using a casting method or a blade coating method to prepare a flexible film; coating an electrode on the pyroelectric material The upper and lower surfaces of the film obtain pyroelectric regions; epoxy resin is used to bond the flexible film and the pyroelectric regions to form the novel heterojunction photovoltaic energy collector based on the photothermal-pyroelectric synergistic effect. The collector has the advantages of low cost, simple process and no noise.

Description

technical field [0001] The invention belongs to the technical field of energy collection, and relates to a photothermal-pyroelectric heterojunction photovoltaic energy collector and a preparation method thereof. Background technique [0002] With the development of science and technology and human society, the global energy crisis and environmental pollution have become more and more serious. Many countries and regions have attached great importance to the development and utilization of renewable energy, such as solar energy, wind energy, tidal energy, electromagnetic energy, waste heat, etc. Moreover, the rapid development of microelectronics and wireless communication promotes the development of power supply towards miniaturization, integration and portability. In such an environment, energy harvesters came into being. The energy harvester can directly convert the energy in the environment into electric energy, and its size is controllable, which can provide green energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S10/30B81C1/00B81C3/00
CPCH02S10/30B81C3/001B81C1/0038B81C2203/032Y02E10/50
Inventor 汪尧进宋树聂长文蔡园园杨斌
Owner NANJING UNIV OF SCI & TECH
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