Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Titanium dioxide crystallized light absorption enhancement thin film electrode and its preparation method

A titanium dioxide and thin-film electrode technology, which is applied in the field of TiO2 nanocrystalline thin-film electrodes, can solve the problems of complicated preparation methods, unfavorable industrialization of dye-sensitized solar cells, etc., and achieves simple preparation methods, good overall light transmittance and flatness, and good transparency. Overrate effect

Active Publication Date: 2007-02-07
TSINGHUA UNIV
View PDF0 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] About Dense TiO 2 The preparation methods of thin films mainly include: Appl.Phys.Lett.2005, 87:263504-1--263504-3, Chem.Comm.2005, 4351-4353, Electrochim.Acta 1995, 40:643-652, Nature 1998, Spray pyrolysis method reported in 395:583-585 and Sol.Energy Mater.Sol.Cells 2003,76:85-105; Spin-coating sintering method reported in Synth.Met.2002,131:185-187; Synth. The sol-gel method reported in Met.2003, 132:197-204, but these preparation methods are relatively complicated, which is not conducive to the industrialization of dye-sensitized solar cells

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Titanium dioxide crystallized light absorption enhancement thin film electrode and its preparation method
  • Titanium dioxide crystallized light absorption enhancement thin film electrode and its preparation method
  • Titanium dioxide crystallized light absorption enhancement thin film electrode and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] The preparation method of titanium dioxide nanocrystal light absorption enhanced thin film electrode of the present invention comprises the following steps:

[0063] (1) Clean the surface of the conductive substrate. Use ethanol / acetone mixed solvent to ultrasonically clean the surface of the ITO conductive substrate for 15 minutes, then put it into deionized water with detergent and ultrasonically clean it for 15 minutes, then put it into deionized water and ultrasonically rinse it for 15 minutes three times, then place the conductive substrate in In a clean bench, dry with an infrared lamp.

[0064] (2) Preparation of titanium precursor solution: 3 mL of titanium precursor was dissolved in 100 mL of petroleum ether, and a titanium precursor solution with a concentration of 3% by volume was prepared.

[0065] (3) Preparation of primary semi-finished products of titanium dioxide dense thin film electrodes. The titanium precursor solution in step (2) is evenly coated (...

Embodiment 1

[0087] According to Chinese Science Bulletin, 2005, 50 (18): 1985-1990 and J.Phys.Chem.B, 1997, the method that reports in V.101.55~57 prepares titanium dioxide small particle colloid: prepare the acetic acid (analysis of pH=2) The pure) aqueous solution was kept in an ice bath at a temperature around 0°C. Under vigorous stirring conditions, a mixed solution of 72 mL of titanium isopropoxide (analytical grade) and 72 mL of isopropanol (analytical grade) was added dropwise to 600 mL of acetic acid aqueous solution, and stirred overnight at room temperature to obtain a clear and transparent solution. The solution was vigorously stirred at a constant temperature of 80° C. to evaporate the isopropanol in the solution to obtain a light blue transparent solution. The above light blue transparent solution was placed in a titanium autoclave with a built-in Teflon cup, and heated at 230°C for 12 hours to obtain white TiO 2 precipitation. After the solution is cooled, ultrasonically d...

Embodiment 2

[0092] According to the method in Example 1, except that the polymethyl methacrylate spherical particle size is changed to 300nm, other steps are identical. The first layer of dense TiO 2 The thickness of the film layer is 5 nanometers, which is composed of titanium dioxide particles with a particle size of 2 nanometers; the second layer of macroporous TiO 2 The thickness of the film layer is 4 microns, and it is composed of titanium dioxide particles with a diameter of 25 nanometers and spherical air macropores with a diameter of 300 nanometers.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a Titania crystal adsorption enhancement film electrode and relative production, wherein said film electrode is formed by the conductive substrate and the composite layer formed by the first layer of dense TiO2 film and the second layer of large-hole film layer; the first dense TiO2 film is formed by the titania particles whose diameter is 2-5nm; the second layer is formed by the titania particle whose diameter is 5-60nm and the ball air hole whose diameter is 80-1500nm. Said Titania dense film can effectively baffle the electron combination between the electrolyte and the conductive substrate; the large-hole emission film has hundreds of nanometer air large holes on the film material, with high light diffuse property.

Description

technical field [0001] The present invention relates to a kind of TiO 2 Nanocrystalline thin-film electrodes, especially TiO with light-scattering centers to improve light absorption efficiency 2 A nanocrystalline film electrode belongs to the field of photoelectric technology. Background technique [0002] Titanium dioxide has the advantages of non-toxicity to organisms, no photocorrosion under light, good acid and alkali resistance, very stable chemical and physical properties, abundant sources, and low price. Clean ceramics, gas sensitive ceramics, thermistor ceramics, varistor ceramics, sensors, air purification, sewage treatment, sunscreen cosmetics, anti-ultraviolet fibers, exterior wall coatings and anti-fog glass preparation and other fields have extremely broad application prospects of semiconductor materials. [0003] Titanium dioxide is divided into three crystal forms: Anatase, Rutile and Brookite. Anatase or rutile titanium dioxide is generally used in solar ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01L51/46H01L51/48H01L31/0224H01L31/18H01G9/20H01M14/00
CPCY02E10/549Y02P70/50
Inventor 邱勇马玉涛王立铎
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com