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Stereo absorption filament integrated dye sensitization solar cell

A technology for solar cells and dye sensitization, applied in the field of solar cells, can solve problems such as low efficiency and low solar energy utilization efficiency, and achieve the effects of reducing internal resistance, efficient and convenient application, and saving floor space

Inactive Publication Date: 2007-12-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, the photosynthesis of chlorophyll in plants in nature has a very low utilization efficiency of solar energy, less than 1%, far lower than the current solar cell efficiency, but the important difference between it and lichens, mosses and other plants is that the growth of trees uses The three-dimensional light-absorbing structure of fractal growth has been realized, and the most reasonable utilization of solar energy has been achieved, which has played a beneficial role in the development of new dye-sensitized solar cells.

Method used

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  • Stereo absorption filament integrated dye sensitization solar cell
  • Stereo absorption filament integrated dye sensitization solar cell

Examples

Experimental program
Comparison scheme
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 it, 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 add 0.2 ml Triton X-100 was added to the suspension to prepare a titanium oxide sol with a concentration of 54.54%.

[0023] 230 titanium wires with a diameter of 100 μm and a length of 7 cm were coated with a 30 μm thick titanium oxide film at a pulling speed of 10 mm per second by the pulling method, and about 1 cm of titanium wire was reserved as a conductive electrode. Heat treatment for 30 minutes.

[0024] Put the coated titanium wire into the 3×10 -5 In the ethanol solution of molar N719 ruthenium organic dye, warm to 80°C and soak for 3 hours, take it out, wash it with ethanol, and store it in a dry and dark environment.

[0025] Use 100μm copper wire to wrap around the photoanode of reserved titan...

Embodiment 2

[0029] 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.

[0030]70 nickel wires with a diameter of 100 μm and a length of 11 cm were plated with a 25 μm thick titanium oxide film at a pulling speed of 10 mm per second by the pulling method, and a nickel wire of about 1 cm was reserved as a conductive electrode. Heat treatment for 30 minutes.

[0031] Put the coated nickel wire into the 5×10 -5 mol / L N719 ruthenium organic dye ethanol solution, placed at room temperature for 72 hours, ...

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Abstract

A solar cell comprises a transparent glass tube with multiple metal wires plated by film being material of wide band gap nanosemiconductor film oxide for separating electric charge. It is featured as utilizing metal wires as light positive electrode of solar cell after they are connected in parallel and led out, placing pair electrode in tube to undertake function of catalysis and electronic transmission, filling electrolyte in the tube and using seal glue to package the tube.

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] Since the solar cell was invented in 1954, solar cells made of various materials (including silicon, GaAs, CIS, and dye-sensitized solar cells, etc.) have all adopted planar structures, although scientists have been working to improve the efficiency of planar solar cells. , but based on the calculation of the highest theoretical efficiency of monocrystalline silicon solar cells of 50%, the area it occupies is still huge, and it is difficult to meet all the electricity needs of a family even if the entire roof of the villa is used. With the growth of population, people will inevitably build more high-rise buildings, and the roof and land area that can be used to install solar cells will inevitably be less. Making full use of sunlight is a crucial issue. As we all know, the photosynthesis of chlorophyll in plants ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/04H01G9/20H01M14/00
CPCY02E10/542
Inventor 沈辉刘勇邓幼俊
Owner SUN YAT SEN UNIV
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