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Solar cell photoanode based on three-dimensional tio2 nano-network material and preparation method thereof

A technology of solar cells and mesh materials, applied in the field of dye-sensitized solar cells, can solve the problems of inconspicuous inter-particle bridging, reduce inter-particle bridging, and increase electron transmission resistance, so as to reduce the probability of electron recombination and increase Effects of trapping absorption ability and increasing photocurrent density

Active Publication Date: 2016-02-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example: Porous TiO2 does not completely cover SnO doped with fluorine 2 (SnO 2 F) The surface of conductive glass (FTO for short) will lead to back transport reaction, and the electrolyte is easy to directly contact with the conductive glass; at the same time, the bridging effect between the particles inside the porous electrode is not obvious, and the electrode after heat treatment, due to the ablation of organic matter , many large gaps are left inside, which reduces the bridging effect between particles, which will prolong the electron transmission path, reduce the electron transmission efficiency, increase the electron transmission resistance inside the porous electrode, and also increase the recombination probability of electrons

Method used

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  • Solar cell photoanode based on three-dimensional tio2 nano-network material and preparation method thereof
  • Solar cell photoanode based on three-dimensional tio2 nano-network material and preparation method thereof
  • Solar cell photoanode based on three-dimensional tio2 nano-network material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1: Based on three-dimensional TiO 2 The preparation of the photoanode structure of the dye-sensitized solar cell of the nano-network material, the specific process is as follows:

[0036] (1) Prepare two kinds of slurries, one is the slurry containing commercial titanium dioxide (P25, manufacturer Degussa), named slurry 1 (0.3g commercial titanium dioxide is added to 5mL ethanol and 1g terpineol mixed solution, ultrasonically stirred for 60 minutes to get). The other contains commercial titanium dioxide (P25, manufacturer Degussa) and three-dimensional TiO 2 The slurry prepared by mixing nano-mesh materials in a mass ratio of 1:1 is named slurry 2 (0.15g commercial titanium dioxide and 0.15g three-dimensional TiO 2 The nano-mesh material was added to a mixed solution of 5mL ethanol and 1g terpineol, and ultrasonically stirred for 60 minutes).

[0037] (2) Apply slurry 1 to fluorine-doped SnO by scraping method 2 (SnO 2 F) The surface of conductive glass ...

Embodiment 2

[0047] 3D TiO 2 Preparation of nanomesh materials:

[0048] (1) 0.1 g of commercial titanium dioxide (P25, manufacturer Degussa, about 30 nanometers) was added to 60 mL of sodium hydroxide solution with a concentration of 10 mol / L;

[0049] (2) After magnetic stirring for 5 minutes, transfer the mixed solution to a 100mL hydrothermal kettle

[0050] (3) Put the sealed hydrothermal kettle into the oven, heat the oven to 150°C, start timing, and count 90 minutes, turn off the oven, and cool down to room temperature naturally.

[0051] (4) Turn on the hydrothermal kettle, pour out the reactants and perform centrifugation at a speed of 10,000 rpm. Wash with dilute hydrochloric acid and deionized water with a concentration of 0.2 mol / L and then centrifuge, each repeated 3 times.

[0052] (5) Put the final centrifuged product into a vacuum oven at 60°C, dry it for 8 hours and take it out.

[0053] (6) Put the dried powder into a muffle furnace for sintering, the sintering temper...

Embodiment 3

[0055] 3D TiO 2 Preparation of nanomesh materials:

[0056] (1) Add 0.1g commercial titanium dioxide (P25, manufacturer Degussa) to 60mL sodium hydroxide solution with a concentration of 10mol / L

[0057] (2) After magnetic stirring for 20 minutes, transfer the mixed solution to a 100mL hydrothermal kettle

[0058] (3) Put the sealed hydrothermal kettle into the oven, heat the oven to 150°C, start timing, and count 120 minutes, turn off the oven, and cool down to room temperature naturally.

[0059] (4) Turn on the hydrothermal kettle, pour out the reactants and perform centrifugation at a speed of 15,000 rpm. Use dilute hydrochloric acid with a concentration of 0.2 mol / L and deionized water successively, wash-centrifuge, and repeat 3 times each.

[0060] (5) Put the final centrifuged product into a vacuum oven at 60°C, dry it for 10 hours and take it out.

[0061] (6) Put the dried powder into a muffle furnace for sintering, the sintering temperature is 450°C, the heating ...

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Abstract

The invention discloses a solar cell photo-anode based on a three-dimensional TiO2 nano mesh material, and a preparation method of the solar cell photo-anode, and belongs to the field of dye-sensitized solar cells. The solar cell photo-anode consists of a coating 1 and a coating 2 on fluorine-doped tin oxide (FTO) conductive glass, wherein the coating 1 is titanium dioxide of which the thickness is 4 to 8 mm; the coating 2 is a mixture of the titanium dioxide and the three-dimensional TiO2 nano mesh material; the thickness of the mixture is 4 to 8 mm, and the mass ratio of the titanium dioxide to the three-dimensional TiO2 nano mesh material is 1:1; and the coating 2 is positioned on the coating 1. By adoption of a photo-anode thin film structure, the parallel resistance of a cell can be effectively improved, and series resistance is reduced, so the probability of electron recombination is reduced, the transmission efficiency of electrons is improved, and the capture absorption capacity of sunlight in a dye adsorption state can be improved. On the basis of the two characteristics of the photo-anode thin film structure, the photo current density and photoelectric conversion efficiency of the dye-sensitized solar cell are greatly improved.

Description

technical field [0001] The invention belongs to the field of dye-sensitized solar cells, in particular to a three-dimensional TiO-based 2 A dye-sensitized solar cell photoanode of a nano-mesh material and a preparation method thereof, the photoanode can effectively improve the conversion efficiency of the dye-sensitized solar cell, and better perform solar power generation. Background technique [0002] In 1991, Swiss scientists The leading research group reported a dye-sensitized solar cell with simple preparation, low cost, high efficiency, and long life, which brought revolutionary innovations to the development of photoelectrochemical cells and led major research on new-generation solar cells The development direction has received extensive attention from researchers at home and abroad. Although its theoretical photoelectric conversion efficiency is speculated to be 33-36%, the highest efficiency reported so far is 11-13%, which needs to be further improved. Among th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 卢革宇程鹏飞刘凤敏杜思思蔡雅欣于英硕
Owner JILIN UNIV
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