阅读说明：本技术 一种可实时监控内部应变的染料敏化太阳电池及制作方法 (Dye-sensitized solar cell capable of monitoring internal strain in real time and manufacturing method thereof ) 是由 蔡洪峰 刘伟庆 毛志敏 吴旭东 姜海燕 陆炳君 熊儒涛 赵思瑞 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种可实时监控内部应变的染料敏化太阳电池及制作方法,在染料敏化太阳电池的光阳极纳米薄膜内部,嵌入一根微米级光纤,并从电池两端引出,接入光信号发射端和接收端。本发明通过在烧结TiO<Sub>2</Sub>薄膜时嵌入一根纳米级的光纤,构成新型光阳极,用此光阳极部件封装成染料敏化太阳电池后,就可以在电池进行光电转化的过程中,实时的监测光阳极薄膜的应变数据。同时,还可以利用本发明测试不同环境下,不同电解液的,光电转化过程中光阳极薄膜的应变。(The invention discloses a dye-sensitized solar cell capable of monitoring internal strain in real time and a manufacturing method thereof. The invention is realized by sintering TiO 2 A nano-scale optical fiber is embedded in the film to form a novel photo-anode, and strain data of the photo-anode film can be monitored in real time in the photoelectric conversion process of the cell after the photo-anode component is packaged into a dye-sensitized solar cell. Meanwhile, the invention can be used for testing the strain of the photo-anode film in the photoelectric conversion process of different electrolytes in different environments.)

1. A dye-sensitized solar cell capable of monitoring internal strain in real time and a manufacturing method thereof are characterized in that when a photo-anode of the dye-sensitized solar cell is prepared, an optical fiber is embedded, an optical signal input end and a receiving end are connected to two ends of the optical fiber after electrodes are packaged, optical signals are transmitted and received respectively, and strain of a nano film in the dye-sensitized solar cell is judged by processing the obtained optical signals through a computer.

2. The dye-sensitized solar cell according to claim 1, capable of real-time monitoring of internal strain, characterized in that: the nano film embedded optical fiber in the dye-sensitized solar cell tests the strain of the nano film of the dye-sensitized solar cell under different working states and environments, and outputs signals in real time in the form of optical signals.

3. A manufacturing method of a dye-sensitized solar cell capable of monitoring internal strain in real time is characterized by comprising the following steps:

1) a layer of nano porous semiconductor film is spin-coated on the conductive glass;

2) placing the spin-coated conductive glass in a muffle furnace, and sintering for 6h at 450 ℃;

3) fixing the nano optical fiber on the conductive glass, wherein the middle part of the nano optical fiber is arranged in the center of the sintered nano film;

4) repeating the steps 1) and 2) for one to two times to finish the preparation of the photo-anode;

5) and packaging the prepared photo-anode and the counter electrode deposited with platinum atoms, and packaging the photo-anode and the counter electrode into a liquid inlet after injecting standard electrolyte.

4. The method according to claim 3, wherein the method comprises: the nano film in the dye-sensitized solar cell comprises but is not limited to TiO₂A film.

5. The method for manufacturing a dye-sensitized solar cell capable of monitoring internal strain in real time according to claim 3, wherein: the diameter of the fiber core embedded in the nano film is micron-sized or submicron-sized, and the maximum diameter of the whole structure of the fiber core is not larger than the thickness of the film.

Technical Field

The invention relates to the field of optical fiber sensing and the field of dye-sensitized solar cell testing, in particular to a dye-sensitized solar cell capable of monitoring internal strain in real time and a manufacturing method thereof.

Background

The dye-sensitized solar cell (DSC) is a novel solar cell with a sandwich-like structure, which mainly comprises a photo-anode, a nano-film and a counter electrode. The method has the advantages of low production cost, easy industrial production process technology and wide application prospect, and attracts a plurality of scientific researchers and enterprises to research and develop. The photoanode is an important component of the dye-sensitized solar cell, has irreplaceable important effect on the photoelectric conversion efficiency of the solar cell, and mainly comprises TiO as the material of the photoanode of the dye-sensitized solar cell₂、ZnO、SnO₂、CuO₂And the like. When the dye-sensitized solar cell is in an operating state, a main area where photoelectric conversion occurs is a nano thin film area on the photo-anode. However, because the nano-film is packaged inside the battery and the thickness is in the micrometer range, the traditional test method cannot accurately measure the stress change inside the film.

The optical fiber sensing technology is a novel testing sensing technology using light as information acquisition and transmission, and the optical fiber sensor prepared by the technology realizes sensing of various physical parameters such as temperature, strain, vibration, acceleration, refractive index and the like through the rapid development in recent years. Compared with the traditional electrical sensor, the optical fiber sensor has the advantages of electromagnetic interference resistance, low cost, good durability, easiness in networking and the like, so that the strain monitoring of the dye-sensitized solar cell nano film by combining the optical fiber sensing technology is the core of the invention.

Disclosure of Invention

The invention provides a dye-sensitized solar cell capable of monitoring internal strain in real time and a manufacturing method thereof, and aims to provide an effective information acquisition means for researching internal changes of the dye-sensitized solar cell.

The invention is realized in such a way that the dye-sensitized solar cell is a typical sandwich structure and is coated with porous TiO based on FTO glass₂The nano film is used as a photo-anode, the FTO glass coated with chloroplatinic acid is used as a photo-cathode, and standard electrolyte is added in the middle for packaging. When the photo-anode part of the dye-sensitized solar cell is prepared, after a layer of nano film is spin-coated and sintered, the strain sensing part of the optical fiber strain sensor is fixed at the central position of the nano film, then the spin coating and sintering of the second layer or even the third layer of nano film are carried out, then the dye-sensitized solar cell is packaged together with a standard counter electrode through a plastic packaging film, and an optical signal input end and a receiving end are connected to two ends of an optical fiber.

The preparation method of the dye-sensitized solar cell comprises the following steps:

1) and (3) spin-coating a layer of nano-porous semiconductor film on the conductive glass.

2) And (3) placing the spin-coated conductive glass in a muffle furnace, and sintering for 6h at 450 ℃.

3) Fixing the nano optical fiber on the conductive glass, wherein the middle part of the nano optical fiber is arranged in the center of the sintered nano film;

4) and (3) repeating the steps (1) and (2) for one to two times to finish the preparation of the photo-anode.

5) And packaging the prepared photo-anode and the counter electrode deposited with platinum atoms, and packaging the photo-anode and the counter electrode into a liquid inlet after injecting standard electrolyte.

Further, the nano-film inside the dye-sensitized solar cell comprises but is not limited to TiO₂A film.

Furthermore, the diameter of the fiber core of the optical fiber embedded in the nano film is micron-sized or submicron-sized, and the maximum diameter of the whole structure of the optical fiber is not larger than the thickness of the film.

Furthermore, the optical fiber embedded in the nano film in the dye-sensitized solar cell can test the strain of the nano film of the dye-sensitized solar cell under different working states and environments, and output signals in real time in the form of optical signals.

Based on the optical fiber sensing technology, the optical fiber of the stress sensing part of the optical fiber sensor is embedded into the nano film of the dye-sensitized solar cell and then packaged to prepare the dye-sensitized solar cell. The invention is characterized in that the diameter of the optical fiber is in micron or submicron order, and the thickness of the optical fiber is in the same order as that of the packaging film, so that the dye-sensitized solar cell can still be packaged seamlessly after the optical fiber is embedded, and the performance of the dye-sensitized solar cell cannot be influenced. And the internal strain of the dye-sensitized solar cell can be measured in real time, and a direct and effective information acquisition means is provided for researching the internal stress change of the cell.

Compared with the existing dye-sensitized solar cell, the method has the greatest advantage of providing a simple and effective method for solving the problem of acquiring the strain information of the dye-sensitized solar cell film in the scientific research field. Under the support of the optical fiber sensing technology, the photoelectric conversion effect is generated on the nano film in the dye-sensitized solar cell under the working state, the strain is generated in the nano porous film, and the sensing part of the optical fiber strain sensor can receive strain information in real time.

Drawings

FIG. 1 is a structural diagram of a dye-sensitized solar cell capable of monitoring the strain of a nano-film in real time.

In the figure, 1, a counter electrode, 2, a photo anode, 3, a nano film, 4, an optical fiber, 5, a light source end and 6, a receiving end.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

As shown in figure 1, a dye-sensitized solar cell capable of monitoring internal strain in real time and a manufacturing method thereof are disclosed, wherein a nano-film 3 on a dye-sensitized solar cell photo-anode 2 with a sandwich structure is embedded with an optical fiber 4 with strain sensing, and is packaged with a counter electrode 1 to form the dye-sensitized solar cell structure capable of monitoring the strain of the nano-film in real time. The two ends of the optical fiber are respectively connected with an optical source end 5 and an optical signal receiving end 6, the optical signal is respectively transmitted and received, and the strain of the nano film in the dye-sensitized solar cell is judged through the optical signal obtained by the computer processing, so that powerful data support is provided for related scientific researches.