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Grapheme-containing solar cell photo-anode based on double scattering structure

A solar cell and photoanode technology, which is applied in the field of solar cell photoanodes, can solve the problems of low light utilization rate, achieve large specific surface area, good scattering effect, and enhance the effect of light capture efficiency

Active Publication Date: 2017-07-25
遵化市茂发新能源科技有限公司
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  • Application Information

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Problems solved by technology

[0005] In current dye-sensitized solar cells, the photoanode is generally made of TiO 2 Compared with other oxide semiconductor materials, it can obtain better photoelectric performance; among the factors affecting photoelectric performance, TiO 2 The specific surface area of ​​the electrode, light harvesting efficiency and carrier mobility are three important factors, when TiO 2 The smaller the particle size of the nanoparticles, the larger the specific surface area, but the small particles of TiO 2 It will not only increase the transmission path of electrons, improve the recombination of photogenerated electrons, but also have low light utilization efficiency, so the development of a TiO that can have both high specific surface area and high scattering ability 2 material is positive

Method used

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  • Grapheme-containing solar cell photo-anode based on double scattering structure

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preparation example Construction

[0024] The preparation process of the double scattering structure photoelectrode is as follows:

[0025] Step 1, cleaning the transparent conductive substrate;

[0026] Step 2, preparing the first scattering layer on the transparent conductive substrate;

[0027] Step 3, preparing a second scattering layer on the first scattering layer;

[0028] specific,

[0029] Step 1, cleaning the transparent conductive substrate

[0030] Select FTO substrate as the transparent conductive substrate, cut it, and then put it into acetone, ethanol, and deionized water to clean it ultrasonically for 30 minutes;

[0031] Step 2, preparing the first scattering layer

[0032] a) Preparation of TiO 2 hollow ball:

[0033] 2.6g of Ti(SO 4 ) 2 Add to 150ml of distilled water, stir for 30min; add 0.41g of ammonium fluoride and 1.2g of urea to the above solution, and stir for 50min; transfer the above solution to two 100ml hydrothermal kettles, and react hydrothermally at 180°C After 12 hours...

Embodiment 1

[0039] Step 1, cleaning the transparent conductive substrate

[0040] For the transparent conductive substrate, select the FTO substrate, cut it, and then put it into acetone, ethanol, and deionized water to clean it ultrasonically for 30 minutes;

[0041] Step 2, preparing the first scattering layer

[0042] a) Preparation of TiO 2 hollow ball:

[0043] 2.6g of Ti(SO 4 ) 2 Add to 150ml of distilled water, stir for 30min; add 0.41g of ammonium fluoride and 1.2g of urea to the above solution, and stir for 50min; transfer the above solution to two 100ml hydrothermal kettles, and react hydrothermally at 180°C After 12 hours, after the reaction, the white precipitate in the hydrothermal kettle was collected and washed with water and alcohol for 3 times, and then dried in a vacuum oven at 80°C for 8 hours to obtain TiO 2 Hollow spherical powder;

[0044] b) Dissolve the single-layer graphene in acetone, sonicate until completely dissolved, the concentration of the single-laye...

Embodiment 2

[0050] Step 1, cleaning the transparent conductive substrate

[0051] For the transparent conductive substrate, select the FTO substrate, cut it, and then put it into acetone, ethanol, and deionized water to clean it ultrasonically for 30 minutes;

[0052] Step 2, preparing the first scattering layer

[0053] a) Preparation of TiO 2 hollow ball:

[0054] 2.6g of Ti(SO 4 ) 2 Add to 150ml of distilled water, stir for 30min; add 0.41g of ammonium fluoride and 1.2g of urea to the above solution, and stir for 50min; transfer the above solution to two 100ml hydrothermal kettles, and react hydrothermally at 180°C After 12 hours, after the reaction, the white precipitate in the hydrothermal kettle was collected and washed with water and alcohol for 3 times, and then dried in a vacuum oven at 80°C for 8 hours to obtain TiO 2 Hollow spherical powder;

[0055] b) Dissolve the single-layer graphene in acetone, sonicate until completely dissolved, the concentration of the single-laye...

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Abstract

The application relates to a grapheme-containing solar cell photo-anode based on double scattering structure. The photo-anode is a photo-electrode having double scattering structure and comprises a transparent conductive substrate, a first scattering layer disposed on the transparent conductive substrate, and a second scattering layer disposed on the first scattering layer, wherein the first scattering layer comprises a TiO2 hollow sphere, WO3 nano-particles, MnO2 nano-particles, and graphene, and the second scattering layer is a TiO2 nanosheet structure.

Description

technical field [0001] The present application relates to the technical field of electrode materials, in particular to a solar cell photoanode containing graphene based on a double-scattering structure. Background technique [0002] The energy problem is a common problem faced by mankind. Due to the depletion of fossil fuels and the environmental pollution caused by the use of a large number of fossil fuels, it has seriously threatened the survival and development of human beings. [0003] Since the 20th century, with the development of the world economy and the rapid growth of the population, the environment, energy and population have increasingly become major problems to be solved by human beings. As the total amount of fossil fuel storage is limited, it will be basically exhausted by the end of this century. If a large amount of renewable energy is not found, the survival of human beings will face unprecedented difficulties. Although it is difficult for our generation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCH01G9/2027H01G9/2031H01G9/2036H01G9/2045Y02E10/542
Inventor 不公告发明人
Owner 遵化市茂发新能源科技有限公司
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