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Transparent conductive film composition for solar cell and transparent conductive film thereof

A transparent conductive film and solar cell technology, applied in conductive coatings, circuits, photovoltaic power generation, etc., can solve the problems of introducing, maintaining, and operating a large amount of cost, and achieve the effect of simple power generation efficiency

Inactive Publication Date: 2012-05-09
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Conventionally, in this thin-film solar cell, electrodes and reflective films have been formed by vacuum film-forming methods such as sputtering, but the introduction, maintenance, and operation of large-scale vacuum film-forming equipment usually require a lot of cost

Method used

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  • Transparent conductive film composition for solar cell and transparent conductive film thereof
  • Transparent conductive film composition for solar cell and transparent conductive film thereof
  • Transparent conductive film composition for solar cell and transparent conductive film thereof

Examples

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Embodiment 1

[0087] In Example 1, first, as shown in the following Table 1, in the dispersion medium IPA, ITO powder with an average particle diameter of 25 nm and Nissan Chemical Co. Colloidal silica spherical particles (trade name: ST-O) produced by Kogyo Co., Ltd., in addition, with respect to the total solid particle 70 mass % of conductive oxide particles and colloidal silica particles, mixed in a ratio of 30 mass % as Binder SiO 2 Binder1.

Embodiment 2

[0088] In Example 2, in the dispersion medium ethanol, ATO powder with an average particle diameter of 40 nm as the conductive oxide powder and colloidal oxide powder manufactured by Nissan Chemical Industries Co., Ltd. with an average particle diameter of 15 nm were mixed in a ratio of 95 to 5. Silicon spherical particles (trade name: ST-O-40), in addition, with respect to the total solid particles of conductive oxide particles and colloidal silica particles 90% by mass, non-polymerized Physical adhesive 1.

Embodiment 3

[0089] In Example 3, in the dispersion medium IPA, TZO powder with an average particle diameter of 30 nm as a conductive oxide powder and colloid manufactured by Grace Japan Co., Ltd. with an average particle diameter of 12 nm were mixed at a ratio of 92 to 8. Silica spherical particles (trade name: LUDOX CL-P), in addition, SiO as a binder was mixed in a ratio of 30% by mass with respect to 70% by mass of the total solid particles of conductive oxide particles and colloidal silica particles 2 Binder 2.

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Abstract

The present invention relates to a transparent conductive film composition which is used in a wet type coating method of the solar cell, and a transparent conductive film which is prepared by the composition. The transparent conductive film has the following functions: enlarging a difference between the refractivity of the transparent conductive film and the refractivity of photoelectric conversion layer, increasing reflection light of an interface between the transparent conductive film and the photoelectric conversion layer, and improving light emitting efficiency of the thin-film solar battery through the increased light that returns to the photoelectric conversion layer. The invention also provides the transparent conductive film composition which can form the transparent conductive film. The transparent conductive film composition for the solar cell is characterized by comprising the following components: conductive oxide particles, spherical colloid silicon oxide particles of which the average particle diameter is 6-45 nm, and an additive. Relative to total 100 by weight parts of conductive oxide particles and spherical colloid silicon oxide particles, the transparent conductive film composition comprises 2-35 by weight parts of spherical colloid silicon oxide particles.

Description

technical field [0001] The present invention relates to a composition for a transparent conductive film and a transparent conductive film. In more detail, it is related with the composition for transparent conductive films used for a solar cell, and a transparent conductive film. Background technique [0002] At present, from the standpoint of environmental protection, the research, development and practical application of green energy are being promoted, and solar cells are attracting attention because sunlight as an energy source is inexhaustible and pollution-free. In the past, bulk solar cells made of monocrystalline silicon or polycrystalline silicon have been used as solar cells. However, due to the high manufacturing cost and low productivity of bulk solar cells, it is urgent to develop solar cells that save as much silicon as possible. [0003] Therefore, development of thin-film solar cells using semiconductors such as amorphous silicon having a thickness of, for e...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/24H01L31/0224H01L31/04H01L31/18
CPCY02E10/50Y02P70/50
Inventor 日向野怜子泉礼子山崎和彦林年治
Owner MITSUBISHI MATERIALS CORP
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