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Semiconductor electrode, preparation method thereof and solar cell comprising semiconductor electrode

A solar cell and semiconductor technology, applied in the field of dye-sensitized solar cells, can solve the problems of low photoelectric conversion rate of dye-sensitized solar cells, and achieve the effects of improving photoelectric conversion rate, increasing photoelectric current, and prolonging lifespan

Inactive Publication Date: 2010-01-06
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the electrode of the dye-sensitized solar cell, conductive particles are added to the semiconductor nanocrystal film, and the conductivity of the conductive particle is utilized to improve the conductivity of the semiconductor nanocrystal film to a certain extent, but the photoelectric conversion of the dye-sensitized solar cell rate is still relatively low

Method used

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  • Semiconductor electrode, preparation method thereof and solar cell comprising semiconductor electrode
  • Semiconductor electrode, preparation method thereof and solar cell comprising semiconductor electrode
  • Semiconductor electrode, preparation method thereof and solar cell comprising semiconductor electrode

Examples

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preparation example Construction

[0021] The preparation method of the semiconductor electrode provided by the invention comprises forming a semiconductor layer containing semiconductor particles and metal oxide particles on the conductive bottom layer, and then forming a dye layer on the semiconductor layer, wherein the metal oxide particles are Zr, Nb, Ta, Oxide particles of one or more of Mo, W, Ni, Cu, Zn, Cd, Sn, Bi, Fe, Sb.

[0022] The preparation method of the semiconductor nanocrystal film comprises mixing metal oxide particles and semiconductor particles in the presence of a dispersant. The contact method can use various existing methods to mix metal oxide particles and semiconductor particles, for example, mechanical stirring and high-energy ball milling can be used. The preparation process of the semiconductor nanocrystalline film will be described in detail below by taking the ball milling method as an example.

[0023] The ball milling method includes mixing metal oxide particles and semiconduct...

Embodiment 1

[0034] This example is used to prepare the semiconductor electrode for a dye-sensitized solar cell provided by the present invention and the dye-sensitized solar cell containing the semiconductor electrode.

[0035] (1) Preparation of semiconductor crystal film precursor solution

[0036] 25 g TiO 2 particles (particle diameter 30 nm), 2.4 g of SnO 2 (TiO 2 with SnO 2 The substance mass ratio is 100:5), join in 100 milliliters of polyethylene glycols, be configured into slurry, slurry puts into ball mill (Nanjing University Instrument Factory, model QM-3SP2), is ball milling time 0.5 hour in technological condition, ball milling The temperature is 25° C., and the precursor solution P1 is obtained.

[0037] (2) Preparation of semiconductor electrodes

[0038] The precursor solution P1 with a weight of , with a thickness of 4 mm), on which a semiconductor nanocrystal film with a thickness of 10 microns is formed.

[0039] The semiconductor nanocrystalline film and fluorin...

Embodiment 2

[0050] This example is used to prepare the semiconductor electrode for a dye-sensitized solar cell provided by the present invention and the dye-sensitized solar cell containing the semiconductor electrode.

[0051] Dye-sensitized solar cell R2 was prepared in the same manner as in Example 1, except that the precursor solution P1 was replaced by the precursor solution P2 prepared as follows, and the mass ratio of metal oxide particles to semiconductor particles in P2 was 100:10.

[0052] 25 g TiO 2 Particles (particle diameter 30 nm), 4.7 g of SnO 2 , added to 100 milliliters of polyvinyl alcohol, configured into a slurry, and the slurry was put into a ball mill (Nanjing University Instrument Factory, model QM-3SP2), and the process conditions were that the ball milling time was 0.5 hours, and the ball milling temperature was 25°C to obtain the precursor solution P2 .

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Abstract

The invention discloses a semiconductor electrode for a dye-sensitized solar cell, which comprises a conductive bottom layer, a semiconductor layer formed on the conductive bottom layer and a dye layer formed on the semiconductor layer, wherein the semiconductor layer comprises semiconductor particles and metal oxide particles. The invention also provides a preparation method for the semiconductor electrode and the dye-sensitized solar cell comprising the semiconductor electrode. The metal oxide particles are added in the semiconductor layer, and can be one or more kinds of oxide particles of Zr, Nb, Ta, Mo, W, Ni, Cu, Zn, Cd, Sn, Bi, Fe and Sb; and because of the existence of the metal oxide particles, electrons and holes in a semiconductor are effectively separated, the electron-hole service life is prolonged, and the light generated current is increased so as to improve the photo-electro transition rate of the dye-sensitized solar cell.

Description

technical field [0001] The invention relates to a semiconductor electrode, a preparation method thereof and a dye-sensitized solar cell containing the semiconductor electrode. Background technique [0002] Today, when non-renewable energy sources such as electricity, coal, and oil are in short supply, free, clean and inexhaustible solar energy has attracted the attention of the world. Solar cells, a device that can directly convert solar energy into electrical energy, have become the field of many researchers. Silicon solar cells were first developed by Bell Laboratories in the United States and have high photoelectric conversion efficiency, so it became the first solar cell product to be industrially produced. However, the manufacturing process of silicon solar cells is complex, expensive and the raw material silicon is increasingly scarce, which restricts its wide application. Swiss Institute of Technology Lausanne Professor and others first proposed the concept of dye...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/04H01M14/00H01M10/36H01M4/00H01L31/0224H01L31/18H01L51/44H01L51/46H01L51/48H01L31/04
CPCY02E60/12Y02E10/542Y02E60/10Y02P70/50
Inventor 林信平宫清刘倩倩陈炎
Owner BYD CO LTD
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