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Novel pretreatment method of photo-anode of dye-sensitized solar cell

A solar cell and dye sensitization technology, which is applied in the field of dye sensitized solar cell materials, can solve the problems of time-consuming and cumbersome experimental process, and achieve the effects of reducing production costs, simplifying the production process, and avoiding shedding

Inactive Publication Date: 2015-04-01
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the preparation process of traditional dye-sensitized solar cells, the conductive substrate is pretreated with titanium tetrachloride solution, and then the titanium dioxide mesoporous film is coated, which can improve the adhesion of the titanium dioxide mesoporous film on the conductive substrate. However, the titanium tetrachloride solution used in this process is volatile, strongly acidic and highly corrosive, and the experimental process must be realized by solution immersion method. The experimental process is cumbersome, time-consuming, and produces a large amount of corrosive Titanium tetrachloride waste liquid, these are unfavorable factors hindering the commercialization of this photoelectric conversion technology

Method used

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  • Novel pretreatment method of photo-anode of dye-sensitized solar cell

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preparation example Construction

[0030] The preparation method of peroxytitanic acid comprises the following steps: first prepare TiOSO with Ti content of 0.1~0.5mol / L 4 transparent solution and 3mol / L ammonia water; drop the two reaction solutions into an appropriate amount of deionized water, and at the same time stir continuously to mix the precipitation reactants evenly, and control the pH value of the reaction system to be kept between 7 and 9; then the completely reacted The suspension is subjected to solid-liquid separation, and the obtained white precipitate is washed with deionized water, and washed repeatedly for 3 to 5 times, and the washed precipitate is diluted to 0.05mol / L to 0.2mol / L to become a white precipitate suspension; select 30%H 2 o 2 solution, molar ratio Ti:H 2 o 2 =1:4~6, add it dropwise to the above suspension, and stir constantly to make the reaction fully proceed. At this time, the reactant turns yellow. Let the reaction solution stand for 20-24 hours, and you can get light yel...

Embodiment 1

[0042] (1) Preparation of tetrabutyl titanate solution:

[0043] Mix tetrabutyl titanate with ethanol at a mass percentage of 10%, and fully stir on a magnetic stirrer for 30 to 60 minutes to obtain an ethanol solution of tetrabutyl titanate;

[0044] (2) Preparation for FTO:

[0045] Determine the conductive surface of FTO, ultrasonically clean it with deionized water and acetone for 25 minutes, dry the FTO after ultrasonic cleaning, and set aside;

[0046] (3) Pretreatment of FTO:

[0047] The prepared ethanol solution of tetrabutyl titanate with a mass percentage of 10% was applied to the cleaned conductive surface of the FTO glass by spraying, and the sprayed FTO glass was dried at 250° C. for 5 minutes.

Embodiment 2

[0049] (1) Preparation of tetraisobutyl titanate solution:

[0050] Mix tetraisobutyl titanate with terpineol at a mass percentage of 90%, and fully stir on a magnetic stirrer for 30 to 60 minutes to obtain a terpineol solution of tetraisobutyl titanate;

[0051] (2) Preparation for FTO:

[0052] With embodiment 1;

[0053] (3) Pretreatment of FTO:

[0054] The prepared terpineol solution of tetraisobutyl titanate with a mass percentage of 90% is coated on the cleaned FTO glass conductive surface by the method of stick coating, and the FTO glass after stick coating is baked at 150°C. Let dry for 15 minutes.

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Abstract

The invention relates to a novel pretreatment method of a photo-anode of a dye-sensitized solar cell. The method comprises the steps of applying a titanate and / or titanate solution and / or peroxotitauium acid collosol on a conductive surface of a conductive substrate before forming a semiconductor oxide layer on the conductive substrate, and drying for 1-30min at 50-250 DEG C to form the pretreated conductive substrate. According to the method, titanate and peroxotitauium acid replace titanium tetrachloride in a standard method, the dye-sensitized solar cell with high photoelectric conversion performance can be prepared, a production technology is simplified, the production cost is lowered, a highly corrosive titanium tetrachloride solution is avoided in a production process, and the production process is more environment-friendly and easy to realize.

Description

technical field [0001] The invention relates to the field of dye-sensitized solar cell materials, in particular to a method for pretreatment of photoanodes. Background technique [0002] Dye-sensitized solar cells (DSCs), as the third generation of solar cells, have received extensive attention from the academic community in the past two decades. In 1991, Gratzel and his collaborators made porous high specific surface area TiO 2 The use of thin films in DSC has greatly increased the amount of dye adsorbed on the surface of semiconductor oxides, and the cell efficiency has also been greatly increased to 7.9%. As of 2013, the efficiency of DSC has reached 12.3%. Compared with the expensive production cost and complex preparation process of silicon solar cells, the most attractive feature of DSC is its cheap raw materials and relatively simple manufacturing process, and its stable performance and low attenuation, which has great application prospects. [0003] However, this p...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 李嘉庆杨松旺沈沪江李勇明刘岩
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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