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Dye-sensitized solar cell based on silicon dioxide/titanium dioxide composite photo-anode, preparation method and applications

A solar cell and titanium dioxide technology, which is applied in the direction of titanium dioxide, titanium oxide/hydroxide, and photosensitive equipment, can solve the problems of low photoelectric conversion efficiency of dye-sensitized solar cells, and achieve simple and easy preparation methods, improved efficiency, and open circuits The effect of high voltage

Inactive Publication Date: 2013-11-20
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, some studies have used rare earth doped titanium dioxide as the photoanode material, and the photoelectric conversion efficiency of the assembled dye-sensitized solar cells is lower than 8%.

Method used

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Embodiment 1

[0031] The preparation method of the dye-sensitized solar cell based on the silicon dioxide / titanium dioxide composite photoanode of the present invention comprises the following steps:

[0032] 1. Add 10 mL of tetra-n-butyl titanate dropwise to 100 mL of distilled water, stir at room temperature for 30 min, and wash with suction.

[0033] 2. Add 10 mL of acetic acid and 0.8 mL of nitric acid dropwise to the product of step 1, stir at 80°C for 15 min, add water to a total volume of 170 mL, and stir at 80°C until light blue transparent colloid.

[0034] 3. Transfer 140 mL of the colloid into a hydrothermal reaction kettle, react at 200°C for 12 h, and finally remove the supernatant in the reaction kettle to obtain a white colloid.

[0035] 4. Take the white colloid, add nanocrystalline fumed titanium dioxide P25 accounting for 1-10% of the mass of tetra-n-butyl titanate and nano-silica (particle size 10-9% of the mass of tetra-n-butyl titanate) 50 nm), add 30 mL of deionized w...

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Abstract

The invention provides a dye-sensitized solar cell based on a silicon dioxide / titanium dioxide composite photo-anode, a preparation method and applications. The preparation method is concretely as follows: tetra-n-butyl titanate is hydrolyzed in acid condition, and concentrated to gel through a hydrothermal reaction; the gel is coated on an FTO or ITO conducting glass matrix and calcined to form a silicon dioxide / titanium dioxide composite photo-anode. The dye-sensitized solar cell takes full advantage of effective doping of silicon dioxide in titanium dioxide and inhibition of recombination of photoinduced electrons and electrolytes, and therefore the efficiency of transition of photoinduced electrons from dye excited states to silicon dioxide / titanium dioxide composite photo-anode conduction bands is greatly raised. The dye-sensitized solar cell is advantaged by large open-circuit voltage, high short-circuit current, high photoelectric conversion efficiency, simple and convenient preparation method, low cost and large improvement space.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a dye-sensitized solar cell based on a silicon dioxide / titanium dioxide composite photoanode, a preparation method and application thereof. Background technique [0002] Dye-sensitized solar cells are a kind of titanium dioxide photoanode, sensitizing dye, I - / I 3 - An electrochemical device that converts solar energy into electrical energy consisting of an electrolyte and a counter electrode. [0003] In 1991, the Gr?tzel research group of the Institute of Advanced Technology in Lausanne, Switzerland used nanoporous titanium dioxide as a semiconductor anode, and Ru complexes as sensitizing dyes. I - / I 3 - As the redox electrolyte, platinum was used as the counter electrode to assemble the prototype of the dye-sensitized solar cell, and its photoelectric conversion efficiency was 7.1%, which opened the prelude to the research of dye-sensitized sola...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y40/00H01G9/04H01G9/20
CPCY02E10/542
Inventor 唐群委徐珮珮贺本林陈晓旭
Owner OCEAN UNIV OF CHINA