High ratio surface area grid solar integrated efficient light absorption dye sensitized solar battery

A high specific surface area, dye sensitization technology, applied in the direction of photovoltaic power generation, photosensitive equipment, circuits, etc., can solve the problems of high resistance of conductive glass substrates, improve battery efficiency, increase photoanodic light absorption, etc., to increase effective light collection Area, reduce the internal resistance of the battery, increase the effect of light absorption

Inactive Publication Date: 2011-04-06
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a highly efficient light-absorbing dye-sensitized solar cell integrated with a high specific surface area reticular photoanode, which can efficiently collect electrons and absorb more dyes to further increase the light absorption of the photoanode and solve the problem of conductive glass. The high substrate resistance limits the improvement of battery efficiency and the problems of large-area preparation and serial and parallel connection of components, further improving the efficiency of the battery

Method used

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  • High ratio surface area grid solar integrated efficient light absorption dye sensitized solar battery
  • High ratio surface area grid solar integrated efficient light absorption dye sensitized solar battery
  • High ratio surface area grid solar integrated efficient light absorption dye sensitized solar battery

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Put 12 grams of commercial nano-titanium dioxide P25 powder produced by Germany Degussa company into a mortar and grind, and add 4 ml of isopropanol solution containing 10% acetylacetone drop by drop, then add 10 ml of water drop by drop to continue grinding, and mix 0.2 ml Triton X-100 was added to the suspension to prepare a concentration of 54.54% TiO 2 Sol.

[0023] Use the pulling method to coat a 150 μm diameter, 60-mesh titanium metal mesh with a 15 μm thick titanium oxide film at a pulling speed of 10 mm per second, and reserve about 0.3 cm of the titanium metal mesh as a conductive electrode. Heat treatment for 30 minutes.

[0024] Put the coated titanium metal mesh into the 3×10 -5 mol / L N719 ruthenium organic dye ethanol solution, heated to 80°C and soaked for 3 hours, took it out, cleaned it with ethanol, and stored it in a dry and light-proof environment.

[0025] Immerse the titanium metal sheet in the solution containing 5mmol / L H by pulling method 2 ...

Embodiment 2

[0030] Mix 125mL of isopropyl titanate and 20mL of isopropanol evenly, put it into a separatory funnel, add dropwise to 750mL of deionized water containing 5.3mL of 70% nitric acid within ten minutes and stir vigorously. Continue to stir for 8 hours to form transparent nano-TiO 2 colloid solution, and then put it into a high-temperature and high-pressure reactor at a temperature of 200 ° C for 12 hours to react at a constant temperature, and the prepared nano-TiO 2 The sol was concentrated by rotary evaporation to a concentration of 45% TiO 2 Sol.

[0031] A 100 μm-diameter, 100-mesh nickel metal mesh with a thickness of 10 μm was used for a titanium oxide film by screen printing, and a nickel metal mesh of about 0.3 cm was reserved as a conductive electrode, and heat treated at 500° C. for 1 hour.

[0032] Put the coated nickel metal mesh into the 5×10 -5 mol / L N719 ruthenium organic dye ethanol solution, placed at room temperature for 72 hours, cleaned with ethanol after ...

Embodiment 3

[0038] Put 250mL of butyl titanate and 20mL of isopropanol into a separatory funnel after mixing evenly, add dropwise to 1500mL of deionized water containing nitric acid with a pH value of 1 within 20 minutes and stir vigorously. Continue to stir for 10 hours at ℃ to form transparent nano-TiO 2 colloid solution, and then placed in a high-temperature and high-pressure reactor at 230 ° C for 12 hours at a constant temperature, and the prepared nano-TiO 2 The sol was concentrated by rotary evaporation to a concentration of 60% TiO 2 Sol.

[0039] A 75 μm diameter, 200-mesh tungsten metal mesh with a thickness of 10 μm is used for titanium oxide film, and a tungsten metal mesh of about 0.3 cm is reserved as a conductive electrode, and heat treated at 500 ° C for 1 hour.

[0040] Put the coated tungsten metal mesh into the 5×10 -5 mol / L N719 ruthenium organic dye ethanol solution, placed at room temperature for 72 hours, cleaned with ethanol after taking it out, and stored in a ...

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Abstract

The invention discloses a dye sensitized solar battery integrated by a threadlike light anode with high specific surface area for efficiently absorbing the light, the solar battery is composed of three layers of structures, wherein the first layer is a super-white glass for packaging a cover board, the second layer is a coating metallic net with high specific surface area as the light anode; the coating metallic net with high specific surface area is the metallic net which resists the corrosion of electrolyte or bandwidth gap nanometer crystal semiconductor oxide thin film that a conducting fiber net is coated through coating procedure as charge separation effect; after heat treatment, the sensitized dye is adsorbed to prepare the second layer; the third layer is a coating metal sheet as pair electrodes; the gap between the super-white glass and the coating metal sheet is packaged to form a sealed space which is replete with the electrolyte having the redox. The solar battery of the invention can efficiently collect the electrons and adsorbs more dye to further improve the light absorption of the light anode, solving the problems of large resistance of the conduction glass substrate which limits the battery efficiency, of preparation in large area and of serial, parallel connections of the assemblies, and further enhancing the efficiency of battery.

Description

technical field [0001] The invention relates to the field of photovoltaic utilization of solar energy, in particular to a solar cell. Background technique [0002] Dye-sensitized solar cells have become a hotspot of scientific research because of their simple fabrication process and extremely low cost. One of the reasons why dye-sensitized solar cells cannot be industrialized in the short term is that the efficiency is still low. In thin-film solar cells, it is still unable to compete with mature solar cells such as amorphous silicon and CIGS. key to industrialization. [0003] Traditional dye-sensitized solar cells adopt a sandwich structure with conductive glass as the substrate, see appendix figure 1 . On one side of transparent conductive glass 1 (TCO), a layer of porous nanocrystalline oxide film (usually TiO 2 ), after heat treatment, the single-layer dye 2 is adsorbed to form a photoanode, and the counter electrode is made of a transparent conductive glass 3 coate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/04H01G9/048H01M14/00H01L51/42H01L51/46H01L31/04H01L31/0224
CPCY02E10/542Y02E10/549
Inventor 刘勇沈辉张臻董娴王海孙志高
Owner SUN YAT SEN UNIV
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