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Dye-sensitized solar cell and manufacturing method thereof

A technology of solar cells and dye sensitization, which is applied in the field of solar cells and can solve the problems of low photoelectric efficiency of solar cells

Inactive Publication Date: 2010-02-03
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low photoelectric efficiency of conventional dye-sensitized solar cells, they have not been widely used in practical applications.

Method used

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  • Dye-sensitized solar cell and manufacturing method thereof
  • Dye-sensitized solar cell and manufacturing method thereof
  • Dye-sensitized solar cell and manufacturing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0025] The porous film is prepared by coating a first electrode with a porous film material to form a composition comprising semiconductor particles, wherein the first electrode includes a transparent substrate such as a glass substrate and a plastic substrate. The composition is then heated at an elevated temperature ranging from 400 to 600° C. to form constrictions of semiconductor particles in the porous film.

[0026] When a plastic material is used as a transparent substrate, heat treatment at a high temperature cannot be performed. Thus, in one embodiment, the heat treatment is performed at a relatively low temperature of about 150°C. However, in one embodiment, heat treatment at a relatively low temperature has a problem in that it deteriorates the constriction formation efficiency of semiconductor particles.

[0027] Therefore, one embodiment of the present invention increases or improves the photoelectric efficiency of the dye-sensitized solar cell by necking the par...

Embodiment 1

[0081] The first electrode was fabricated by forming a tin oxide conductive layer on a transparent substrate formed of polyethylene terephthalate having an area of ​​1 cm×1 cm so as to have a surface resistance of 10Ω.

[0082] TiO with an average particle diameter of 20 nanometers can be obtained by adding 30% by weight 2 The semiconductor particles were dispersed in 10 ml of alcohol mixed solution to prepare a porous film forming composition. The first electrode was coated with the porous film-forming composition at a rate of 5 mm / sec using the doctor-document method. After drying, the first electrode is compacted under a predeterminable pressure to form a TiO-containing 2 porous film. The thickness of the porous film is 0.035 mm.

[0083] Next, the first electrode with a porous membrane was placed in 0.3 mM ruthenium (4,4-dicarboxy-2,2′-bipyridine) 2 (NCS) 2 ) solution for 24 hours, so that the porous membrane adsorbs the dye. The porous film with the adsorbed dye is ...

Embodiment 2

[0088] The first electrode was fabricated by forming a tin oxide conductive layer on a transparent substrate formed of polyethylene terephthalate having an area of ​​1 cm×1 cm so as to have a surface resistance of 10Ω.

[0089] TiO with an average particle diameter of 20 nanometers can be obtained by adding 30% by weight 2 The semiconductor particles were dispersed in 10 ml of alcohol mixed solution to prepare a porous film forming composition. The first electrode was coated with the porous film-forming composition at a rate of 5 mm / sec using the doctor-document method. After drying, the first electrode is compacted under a predeterminable pressure to form a TiO-containing 2 porous film. The thickness of the porous film was 0.017 mm.

[0090] Next, the first electrode with a porous membrane was placed in 0.3 mM ruthenium (4,4-dicarboxy-2,2′-bipyridine) 2 (NCS) 2 ) solution for 24 hours, so that the porous membrane adsorbs the dye. The porous film with the adsorbed dye is...

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Abstract

The present invention provides a dye-sensitized solar cell includes a first electrode including a conductive transparent substrate; a light absorption layer disposed on a side of the first electrode;a second electrode facing the first electrode; and an electrolyte disposed between the first and the second electrode. The light absorption layer includes a porous membrane that includes semiconductorparticulates, and a photosensitized dye adsorbed on a surface of the porous membrane. The porous membrane has a membrane density ranging from 0.83 to 1.97mg / mm<3>, wherein the membrane density is a ratio of a porous membrane volume relative to a semiconductor particulate mass.

Description

technical field [0001] The invention relates to a solar cell, in particular to a dye-sensitized solar cell. Background technique [0002] Several studies have been conducted with the aim of developing alternative energy sources that can replace conventional fossil fuels and address the looming energy crisis. In particular, extensive investigations have been conducted to find methods of using alternative energy sources such as wind energy, atomic energy, and solar energy to replace petroleum resources, which are expected to be exhausted within several decades. Among alternative energy sources, solar cells use the virtually unlimited and environmentally friendly solar energy. The solar cells may be silicon (Si) solar cells. [0003] However, Si solar cells are difficult to use because of their relatively high production costs and difficulties in increasing cell efficiency. Dye-sensitized solar cells that can be produced at low cost overcome the above-mentioned problems of S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/04H01L51/42H01G9/20H01M14/00
CPCH01G9/2059Y02E10/542H01L51/0086H01G9/2031Y02P70/50H10K85/344H01L31/04H01L31/0224H01L31/18
Inventor 李禾燮李知爰朴晶远崔在万安光淳姜文盛申炳哲权问奭文琇津李在官
Owner SAMSUNG SDI CO LTD