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A method and device for rapid and uniform sensitization of photoanodes of dye-sensitized solar cells

A technology for solar cells and dye sensitization, which is applied in the field of rapid and uniform adsorption of dye sensitizers on photoanodes of dye-sensitized solar cells, can solve the problems of uneven adsorption of nano-semiconductor films, and achieve the convenience of large-scale production, ensure uniformity, Solve the effect of long adsorption time

Active Publication Date: 2017-01-11
皖江新兴产业技术发展中心
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Problems solved by technology

In general, the adsorption of the photoanode dye sensitizer in dye-sensitized solar cells takes more than ten hours and the adsorption on the nano-semiconductor film is uneven. It is only suitable for the application of small-area dye-sensitized solar cells in the laboratory, not suitable for large areas. Rapid and uniform adsorption of dye sensitizers in dye-sensitized solar cells

Method used

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  • A method and device for rapid and uniform sensitization of photoanodes of dye-sensitized solar cells

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Experimental program
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Effect test

Embodiment 1

[0033] see figure 1 , turn on the heating device of the heating chamber 7 of the dye soaking machine, keep the dye solution in the soaking chamber at a temperature of 40° C., put the storage rack equipped with the photoanode 13 into the soaking chamber 1, the dye solution 12 completely covers the photoanode 13, cover the Sealing cover 2. Open the compressed air valve of the pressurizing device 11 to keep the 0.1 MPa atmospheric pressure in the soaking chamber 1. Turn on the ultrasonic device 9, and maintain the ultrasonic power at 200 W. Turn on the dye solution circulation device 10, and the flow rate of the dye solution is 10 L / min. After maintaining the above operation for half an hour, close the dye solution circulation device 10, close the ultrasonic device 9 and the compressed air valve, open the sealing cover 2, take out the storage rack, and put the next batch of storage racks into the soaking chamber 1 for photoanodic dye sensitization agent adsorption operation. ...

Embodiment 2

[0036] see figure 1 , put the storage rack equipped with the photoanode 13 into the soaking chamber 1 at normal temperature, the dye solution 12 completely covers the photoanode 13, and cover the sealing cover 2. Open the compressed air valve of the pressurizing device 11 to keep the 0.1 MPa atmospheric pressure in the soaking chamber 1. After maintaining the above operation for half an hour, close the compressed air valve, open the sealing cover 2, and take out the storage rack.

[0037] The desorption test was carried out on 25 photoanodes adsorbed with dye sensitizers, and the lowest dye adsorption amount was 0.12×10 -8 mol μm -1 cm -2 , up to 0.2×10 -8 mol μm -1 cm -2 .

Embodiment 3

[0039] see figure 1 , turn on the heating device of the heating chamber 7 of the dye soaking machine, keep the dye solution in the soaking chamber 1 at a temperature of 40°C, put the storage rack equipped with the photoanode 13 into the soaking chamber 1, and the dye solution 12 completely covers the photoanode 13, Close the sealing cap 2. Open the compressed air valve of the pressurizing device 11 to keep the 0.1 MPa atmospheric pressure in the soaking chamber. After maintaining the above operation for half an hour, turn off the heating device and the compressed air valve, open the sealing cover 2, and take out the storage rack.

[0040] The desorption test was carried out on 25 photoanodes adsorbed with dye sensitizers, and the lowest dye adsorption amount was 0.32×10 -8 mol μm -1 cm -2 , up to 0.46×10 -8 mol μm -1 cm -2 .

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Abstract

The invention discloses a method and device for rapid and uniform sensitization of a photo anode of a dye-sensitized solar cell. The method and the device are applicable to absorption of dye sensitizers of different solvents for the photo anode. A photo anode which needs to absorb a dye sensitizer is immersed in a dye solution and through flowing of the dye solution and methods such as heating, pressurizing and ultrasonic processing of the dye solution and the like, rapid and uniform absorption of the dye sensitizer in a photo-anode nano porous membrane is realized. The method and the device for the rapid and uniform sensitization of the photo anode of the dye-sensitized solar cell are capable of solving a problem that the absorption time of the photo-anode dye sensitizer is long; the dye solution is identical in concentration so that uniformity of performance of the dye-sensitized solar cell is ensured; and the method and the device facilitate large-scale production of the dye-sensitized solar cell.

Description

technical field [0001] The invention relates to a method for quickly and uniformly adsorbing a dye sensitizer on a photoanode of a dye-sensitized solar cell, in particular to a special dye soaking machine for rapidly and uniformly adsorbing a dye sensitizer on a photoanode of a dye-sensitized solar cell. Background technique [0002] Dye-sensitized solar cells have made outstanding progress since 1991, and immediately received widespread international attention and attention. Dye-sensitized solar cells are mainly composed of nano-semiconductor films, dye photosensitizers, electrolytes and counter electrodes. Since the dye sensitizer needs to be adsorbed on the nano-semiconductor film to form a photoanode to absorb sunlight, its rapid and uniform adsorption on the nano-semiconductor film is an important issue. In general, the adsorption of the photoanode dye sensitizer in dye-sensitized solar cells takes more than ten hours and the adsorption on the nano-semiconductor film i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20
CPCY02E10/542Y02P70/50
Inventor 陈双宏黄阳翁坚戴松元
Owner 皖江新兴产业技术发展中心
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