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

A technology of solar cells and semiconductors, applied in the field of dye-sensitized solar cells, can solve the problems of low conductivity of nano titanium dioxide layer, low photoelectric conversion rate of dye-sensitized solar cells, etc.

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

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Problems solved by technology

However, due to the low conductivity of the nano-titanium dioxide layer, the photoelectric conversion rate of dye-sensitized solar cells is 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

[0018] The preparation method of the semiconductor electrode provided by the invention comprises forming a dense semiconductor layer containing semiconductor particles and conductive particles on the conductive bottom layer, and then forming a porous semiconductor layer containing semiconductor particles and conductive particles on the dense semiconductor layer, and then A dye layer is formed on the porous semiconductor layer, wherein the conductive particles are metal or alloy particles selected from one or more of Au, Ag, Pt, Cu, Zn, Sn, Ni, Fe, Ir, Ru and In , the weight ratio of semiconductor particles to conductive particles in the dense semiconductor layer is 100-200:1-2.

[0019] The dense semiconductor layer is a co-deposition layer prepared by a co-deposition method. The preparation method includes using platinum as an anode and a conductive bottom layer as a cathode. The co-deposition solution includes an aqueous solution of semiconductor particles, water-soluble meta...

Embodiment 1

[0040] 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.

[0041] (1) Preparation of co-deposition solution

[0042] Disperse 1 gram of titanium dioxide particles (particle diameter 15 nm) uniformly into 5 ml of 50% aqueous solution of isopropanol, 0.1 ml of acetylacetone, and then add 0.01 g of AgNO 3 , the pH value is 6 and the stirring is continued for 20 minutes to obtain the co-deposition solution P1.

[0043] (2) Preparation of dense semiconductor layer

[0044] Use the platinum sheet as the anode, on the conductive glass coated with fluorine-doped tin dioxide layer with a size of 3 × 1.5 cm (FTO conductive glass with a square resistance of 15 ohms manufactured by Qinhuangdao Yaohua Glass Co., Ltd., with a thickness of 4 mm) , as the cathode, the co-deposition solution is P1, and the dense semiconductor layer A1 can be ob...

Embodiment 2

[0055] This example is used to prepare the semiconductor electrode for dye-sensitized solar cell provided by the present invention and the dye-sensitized solar cell containing the semiconductor electrode.

[0056]Dye-sensitized solar cell R2 was prepared in the same manner as in Example 1, except that co-deposition solution P2 was used instead of co-deposition solution P1 when preparing the dense semiconductor layer, and semiconductor slurry D2 was used instead of semiconductor solution P1 when preparing the porous semiconductor layer. Serum D1.

[0057] 2 grams of TiO2 powder (particle diameter is 23 nanometers) is evenly dispersed into 10 milliliters, the concentration is 70% ethanol aqueous solution, 0.2 milliliters of acetylacetone, then add 0.025g CuSO4, keep stirring for 1 hour, can obtain coprecipitation solution P2.

[0058] Mix metal copper particles (particle diameter is 20 nanometers), nano-titanium dioxide semiconductor particles, polyethylene glycol, OP-10, and ac...

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Abstract

The invention discloses a semiconductor electrode for a dye-sensitized solar cell, which comprises a conductive bottom layer, a compact semiconductor layer formed on the conductive bottom layer, a porous semiconductor layer formed on the compact semiconductor layer, and a dye layer formed on the porous semiconductor layer, wherein the compact semiconductor layer and the porous semiconductor layer comprise semiconductor particles and conductive particles; and the conductive particles can be used as electron traps, so that 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 electricity, coal, oil and other non-renewable energy resources are in short supply, 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-sensi...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/045H01M14/00H01M10/36H01L31/0224H01L31/18H01L31/04H01L51/44H01L51/48H01L51/42
CPCY02E60/12Y02E10/542Y02E10/549Y02E60/10Y02P70/50
Inventor 刘倩倩林信平宫清陈炎
Owner BYD CO LTD
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