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Sensibilizer for solar cell and solar cell with the same

A technology of solar cells and sensitizers, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of lack of long-term reliability, enhancement, and diffusion, and achieve good long-term stability, improve power generation efficiency, and power generation efficiency high effect

Inactive Publication Date: 2012-08-15
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the photosensitive layer formed between the layers of the n-doped charge transport layer and the p-doped charge transport layer has the problem that if the metal nanoparticles are directly in contact with the power generation layer, the metal diffuses in each charge transport layer. layer, and do not get long-term reliability
[0008] In a solar cell having a metal electrode formed of metal nanoparticles, there is a problem that since the thin film semiconductor layer is in contact with the metal electrode, the metal is diffused in the thin film semiconductor layer, and long-term reliability cannot be obtained
[0009] On the other hand, in the method of forming a film containing metal nanoparticles on the surface of a substrate in such a manner that the power generating layer and the metal nanoparticles are not in contact with each other, the near-field light generated by the surface plasmon resonance of the metal nanoparticles and the power generating layer Longer distances without sufficient enhancement

Method used

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  • Sensibilizer for solar cell and solar cell with the same
  • Sensibilizer for solar cell and solar cell with the same
  • Sensibilizer for solar cell and solar cell with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] 200cm containing 5% by mass silver nanoparticles 3 The silver nanoparticle dispersion liquid was kept at 40° C., and while vigorously stirring, a 100-cm solution containing 5% by mass of tetraethoxysilane as a raw material of a transparent film was added. 3 After the ethanol solution, add 5cm 3 10% by mass of ammonia water was used as a catalyst and kept for 1 hour to obtain a dispersion containing the sensitizer of Example 1. The dispersion liquid was subjected to ultrafiltration followed by washing to obtain 7 g of the sensitizer of Example 1. The sensitizer of Example 1 produces surface plasmon resonance, and the thickness of the transparent layer is 2 nm.

Embodiment 2

[0075] In addition to adding 100cm containing 20 mass% tetraethoxysilane 3 Except the ethanol solution, it carried out similarly to Example 1, and obtained 8.5 g of the sensitizer of Example 2. The sensitizer of Example 2 produces surface plasmon resonance, and the thickness of the transparent layer is 20 nm.

Embodiment 3

[0077]Except using chloroauric acid instead of silver nitrate, it was carried out in the same manner as the production of silver nanoparticles to obtain a 100cm gold nanoparticle with an average particle diameter of 10nm containing 5% by mass. 3 gold nanoparticle dispersion.

[0078] 10cm containing 10 mass% gold nanoparticles 3 The gold nanoparticle dispersion was kept at 50°C, and while vigorously stirring, 10 cm 3 After acrylic acid as a raw material of the transparent film, 0.5 g of azobisisobutyronitrile was added as a polymerization initiator, and the dispersion liquid containing the sensitizer of Example 3 was obtained by maintaining for 1 hour. This dispersion liquid was centrifuged and the solvent was removed, and the sensitizer of Example 3 was isolated. After that, ethanol was added and stirred again in order to wash the sensitizer, the sensitizer was dispersed, and the solvent was removed by centrifugation after dispersing the sensitizer. This washing was repeat...

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Abstract

A task of the invention is to provide a sensibilizer for a solar cell, which restrains diffusion of metal to a power generating layer. Furthermore realization of higher conversion efficiency based on near-field light which is generated according to surface plasma resonance of metal nanometer particles can be expected. The sensibilizer for the solar cell according to the invention and a sensibilizing layer which comprises the same are characterized in that the sensibilizer for the solar cell is a metal nanometer particle which is provided with a transparent layer on the surface and has surface plasma effect. The sensibilizing layer for the solar cell can be formed through a wet type coating method.

Description

technical field [0001] The present invention relates to a sensitizer for a solar cell that is formed into a film inside or at the interface of a power generating layer of a solar cell, whereby high conversion efficiency due to the surface plasmon effect of metal nanoparticles can be expected to be realized. Background technique [0002] Currently, from the standpoint of environmental protection, research and development of green energy is being promoted. Among them, solar cells are attracting attention from the viewpoints that sunlight as its resource is inexhaustible and pollution-free. Conventionally, monocrystalline silicon or polycrystalline silicon has been used in many cases for photovoltaic power generation by solar cells. [0003] On the other hand, in so-called thin-film semiconductor solar cells (hereinafter referred to as thin-film solar cells) using semiconductors such as amorphous silicon, only a required amount of semiconductor layers as photoelectric conversi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216H01L31/18
CPCY02E10/547Y02P70/50
Inventor 山崎和彦米泽岳洋日向野怜子泉礼子
Owner MITSUBISHI MATERIALS CORP
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