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A dye-sensitized solar cell photoanode and its preparation method and application

A technology for solar cells and dye sensitization, applied in the field of solar cells, can solve the problems of easy cracking of porous films, affecting electron transport, and inability to combine particles, so as to improve photoelectric conversion efficiency, increase reuse efficiency, and increase secondary absorption effect

Active Publication Date: 2017-01-25
KUSN INNOVATION INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Disadvantages of this preparation technology: 1. The preparation process of the nanoporous membrane is complicated; 2. After surface modification, the transmission of electrons in the battery is affected, so that the efficiency of the battery cannot be improved, but the efficiency is reduced; 3. The particle size is large, which cannot make the particles more tightly combined, and the preparation of a single-layer 50μm porous membrane is easy to crack
[0012] Disadvantages of this preparation technology: This technology only considers the scattering of large particles and multiple lights, ignoring that the main function of the semiconductor nanoporous film on the DSSC photoanode is electron transport and dye adsorption, not just a photoresist. Scattering effect, so the efficiency of the battery prepared by this technology is very low, and the added organic polymer large particles will affect the electron transport and the adsorption of the photoanode to the dye

Method used

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  • A dye-sensitized solar cell photoanode and its preparation method and application
  • A dye-sensitized solar cell photoanode and its preparation method and application

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Comparison scheme
Effect test

Embodiment 1

[0052] A photoanode for a dye-sensitized solar cell, such as figure 1 , is a five-layer laminated structure, which is a conductive substrate 101, a first dense layer 102, a transmission layer 103, a second dense layer 104, and a scattering layer 105 in sequence.

[0053] The conductive substrate 101 is FTO glass; the first dense layer 102 and the second dense layer 104 are a layer of dense TiO 2 membrane;

[0054] The transmission layer 103 is nano-TiO 2 Porous membrane;

[0055] The scattering layer 105 is crystalline TiO 2 diffuser film.

[0056] The film thickness of the transmission layer is 12 μm; the film thickness of the scattering layer is 10 μm.

[0057] Its preparation method is:

[0058] 1) Clean the conductive substrate FTO glass;

[0059] Clean with glass cleaner first, then ultrasonically clean with acetone and ethanol, and finally rinse the conductive substrate with deionized water and dry at 60°C;

[0060] 2) Formation of the first dense layer

[0061]...

Embodiment 2

[0078] A photoanode for a dye-sensitized solar cell, such as figure 1 , is a five-layer laminated structure, which is a conductive substrate 101, a first dense layer 102, a transmission layer 103, a second dense layer 104, and a scattering layer 105 in sequence.

[0079] The conductive substrate 101 is FTO glass; the first dense layer 102 and the second dense layer 104 are a layer of dense TiO 2 membrane;

[0080] The transmission layer 103 is nano-TiO 2 Porous membrane;

[0081] The scattering layer 105 is crystalline TiO 2 diffuser film.

[0082] The film thickness of the transmission layer is 10 μm; the film thickness of the scattering layer is 12 μm.

[0083] Its preparation method is:

[0084] 1) Clean the conductive substrate FTO glass;

[0085] Clean with glass cleaner first, then ultrasonically clean with acetone and ethanol, and finally rinse the conductive substrate with deionized water and dry at 60°C;

[0086] 2) Formation of the first dense layer

[0087]...

Embodiment 3

[0099] A photoanode for a dye-sensitized solar cell, such as figure 1 , is a five-layer laminated structure, which is a conductive substrate 101, a first dense layer 102, a transmission layer 103, a second dense layer 104, and a scattering layer 105 in sequence.

[0100] The conductive substrate 101 is FTO glass; the first dense layer 102 and the second dense layer 104 are a layer of dense TiO 2 membrane;

[0101] The transmission layer 103 is nano-TiO 2 Porous membrane;

[0102] The scattering layer 105 is crystalline TiO 2 diffuser film.

[0103] The film thickness of the transmission layer is 10 μm; the film thickness of the scattering layer is 8 μm.

[0104] Its preparation method is:

[0105] 1) Clean the conductive substrate FTO glass;

[0106] Clean with glass cleaner first, then ultrasonically clean with acetone and ethanol, and finally rinse the conductive substrate with deionized water and dry at 60°C;

[0107] 2) Formation of the first dense layer

[0108] ...

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Abstract

The invention discloses a dye-sensitized solar cell (DSSC) photo-anode. The DSSC photo-anode is of a five-layer overlapped structure, and comprises a conductive matrix, a first compact layer, a transmission layer, a second compact layer and a scattering layer in sequence. The DSSC photo-anode adopts the five-layer overlapped structure, the compact layer is arranged between the conductive matrix and the transmission layer, dark current formed between electron, produced on the conductive matrix, and electrolyte is effectively restrained, and further the purpose of improving the photoelectric conversion efficiency of a DSSC is achieved. The scattering layer is arranged at the position of a porous membrane, an optical path and secondary absorption of sunlight are increased through a light scattering function of large grains, and therefore the secondary utilization efficiency of light is increased, and the photoelectric conversion efficiency of the DSSC is improved by about 20%.

Description

technical field [0001] The invention relates to a photoanode of a dye-sensitized solar cell and a preparation method thereof, belonging to the technical field of solar cells. Background technique [0002] Solar energy, as a new sustainable clean energy, has attracted more and more attention in the current environment of continuous haze weather. Among various thin-film solar cells, dye-sensitized solar cells have attracted more and more attention due to their advantages such as simple manufacturing process, easy mass production, and low cost. [0003] Dye-sensitized nano-thin film solar cells are mainly composed of the following parts in turn: conductive glass (FTO), nano-TiO 2 Porous membrane, dye-sensitized layer, electrolyte and counter electrode. In dye-sensitized solar cells, the performance of the porous photoanode is particularly important to the performance of the cell, so there have been more and more studies on the photoanode over the years. In order to achieve a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20
CPCY02E10/542
Inventor 文贵华顾军邹志刚
Owner KUSN INNOVATION INST OF NANJING UNIV
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