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Sensitive dye solar battery with nanometer crystal TiO2

A technology of solar cells and nanocrystals, applied in the field of solar cells, can solve the problems of low photoelectric conversion efficiency of solar cells, low ion migration rate, etc., achieve long working life and avoid failure effects

Inactive Publication Date: 2006-08-16
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ion migration rate of the solid electrolyte is lower than that of the liquid electrolyte, so that the TiO 2 Photoelectric conversion efficiency of solar cells is lower than that of TiO in liquid electrolyte 2 Photoelectric conversion efficiency of solar cells

Method used

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  • Sensitive dye solar battery with nanometer crystal TiO2
  • Sensitive dye solar battery with nanometer crystal TiO2
  • Sensitive dye solar battery with nanometer crystal TiO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The base material used in preparing the semiconductor electrode 1 is ITO conductive glass with a surface resistance of 20-30 ohms, which is cut into a size of 2.5cm×2.5cm, and then cleaned. The nanocrystalline TiO used 2 The powder is P25 type TiO for industrial use 2 Powder with an average particle size of 25-30nm and a specific surface area of ​​50m 2 / g,TiO 2 The content is greater than 99.5%, and it is a mixed structure of anatase phase and rutile phase. Preparation of TiO on ITO Conductive Glass by Powder Coating Method 2 The film, the process is: mix 8mL deionized water and 1.0g P25 powder fully, add a few drops of PEG and fully grind it to prepare a suspension slurry, apply the prepared slurry evenly on the cut and On the cleaned ITO conductive glass, keep it warm at 450°C for 60 minutes. Then will have been coated with TiO 2 The thin film of ITO conductive glass is dipped into the dye solution. The dye used is N3 dye, and the dye solution is prepared by u...

Embodiment 2

[0049] The semiconductor electrode 1, the liquid electrolyte 5, and the sealing method of this embodiment are all the same as those of the embodiment 1. The difference from Embodiment 1 is that in this embodiment, the side of the counter electrode 6 facing away from the semiconductor electrode 1 is corroded with hydrofluoric acid to form a liquid storage pool 51 and a liquid replacement channel 52, and at the same time, on the counter electrode 6 forming through-holes 63, such as Figure 7 , 8 shown. In addition, in this embodiment, a cover plate 64 is provided. The cover plate 64 is a piece of flat glass, used to cover the liquid reservoir 51 and the liquid replenishment channel 52 on the counter electrode 6 . Illustration of the cover plate 64 is omitted here. The resulting TiO 2 The structure of the solar cell is as Figure 9 shown.

[0050] Figure 10 Represents the TiO of Example 2 2 The relationship between the short-circuit current of a solar cell and time. Fr...

Embodiment 3

[0052] The semiconductor electrode 1, the liquid electrolyte 5, and the sealing method of this embodiment are all the same as those of the second embodiment.

[0053] Different from Embodiment 2, in this embodiment, a through hole 63 is opened on the counter electrode 6, such as Figure 11 , 12 shown. On the side of the cover plate 64 facing the counter electrode 6, a liquid reservoir 51 and a liquid replenishment channel 52 are arranged, such as Figure 13 , 14 shown. The resulting TiO 2 The structure of the solar cell is as Figure 15 shown.

[0054] Figure 16 Represents the TiO of Example 3 2 The relationship between the short-circuit current of a solar cell and time. From Figure 16 Known, the TiO of embodiment 3 2 The function of the solar cell is almost the same as that of Embodiment 2. TiO of Example 3 2 The variation of the open-circuit voltage of the solar cell is the same as that of Example 2, and description thereof is omitted here.

[0055] Since the...

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Abstract

The invention consists of semiconductor electrode, liquid electrolyte, counter electrode and sealing materials. It mounts an aqua storage tank in use for storing liquid electrolyte and liquid supplementary channel for use in supplying liquid electrode from outside of TiO2 solar cell. More electrolytes stored in inside of TiO2 solar cell can keep a long working life, and supplementary of electrolyte from outside can avoid failure of TiO2 solar cell caused by leakage or volatile of electrolyte.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular provides a dye-sensitized nanocrystal TiO 2 Solar cells, in particular to a reservoir with a liquid electrolyte and from the dye-sensitized nanocrystalline TiO 2 Dye-sensitized nanocrystalline TiO in a rehydration channel for replenishing liquid electrolyte from the exterior of a solar cell 2 Solar battery. Background technique [0002] Dye-sensitized nanocrystalline TiO 2 Solar cells (hereinafter referred to as TiO 2 Solar cells) have attracted people's attention due to their excellent performance and low cost, and have developed rapidly in more than ten years, and are considered to be one of the most promising development directions of photovoltaic power generation in the future. At present, research work in this field involves various aspects such as semiconductor thin film materials, dyes, electrolytes, conductive glass, and packaging technology. [0003] Past TiO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042H01G9/20H01M14/00
CPCY02E10/50
Inventor 万发荣胡宇宁姜春华龙毅
Owner UNIV OF SCI & TECH BEIJING
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