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All-solid-state heterojunction solar cell

A technology of solar cells and sunlight, applied in the field of dye-sensitized solar cells, to achieve the effects of easy operation, ease of process conditions, and cheap raw materials

Inactive Publication Date: 2013-01-16
KOREA RES INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] However, organic solar cells based on organic semiconductors, dye-sensitized solar cells based on organic / inorganic dyes, and inorganic solar cells based on inorganic semiconductors have only been studied independently. In terms of the structure of a highly efficient dye-sensitized solar cell, it combines the advantages of an inorganic semiconductor substrate thin-film solar cell that can easily absorb solar energy in a wide range from visible light to the near-infrared region, and organic solar cells that can be prepared inexpensively by a solution process. The advantages of the battery, the research and development of "all-solid nanostructured inorganic-organic heterojunction solar cells" that can be expected to be highly efficient, stable and inexpensive are still blank

Method used

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Examples

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preparation example 1）

[0142] A glass substrate coated with fluorine-containing tin dioxide (first electrode) (FTO; F-doped (doped) SnO 2 , 8ohms / sq, Pilkington double-sided grinding method, hereinafter referred to as FTO substrate) after truncated to a size of 25×25mm, and Figure 5 The ends are similarly etched to remove part of the FTO.

[0143] As a recombination prevention film on the truncated and partially etched FTO substrate, a dense structure of TiO with a thickness of about 50 nm was prepared by spray pyrolysis 2 film. The above spray pyrolysis is carried out by using tetraacetylacetonate titanium TAA (Titanium acetylacetonate): EtOH (1:9v / v%) solution, placed on the FTO substrate placed on a hot plate maintained at 450 ° C, using repeated spraying for 3 seconds The method of resting for another 10 seconds adjusted the thickness.

[0144] TiO with an average particle size of 60nm 2 powder (as TiO 2As a benchmark, an aqueous solution in which 1% by weight of titanium peroxide complex ...

preparation example 2）

[0150] A glass substrate coated with fluorine-containing tin dioxide (first electrode) (FTO; F-doped (doped) SnO 2 , 8ohms / sq, Pilkington double-sided grinding method, the following FTO substrate) after truncating to a size of 25×25mm, and Figure 5 Similarly, etch the end to remove part of the FTO.

[0151] As a recombination prevention film on the truncated and partially etched FTO substrate, a dense structure of TiO with a thickness of about 50 nm was prepared by spray pyrolysis 2 film. The above spray thermal decomposition is carried out by using titanium tetraacetylacetonate TAA: EtOH (1:9v / v%) solution, on the FTO substrate placed on a hot plate maintained at 450 ℃, using repeated spraying for 3 seconds and then standing still for 10 seconds method adjusted the thickness.

[0152] TiO with an average particle size of 60nm 2 powder (as TiO 2 As a benchmark, an aqueous solution in which 1% by weight of titanium peroxide complex was dissolved was heat-treated at 250°C ...

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Abstract

The present invention relates to a highly efficient solar cell having a novel structure and superior stability, and which can be mass-produced from an inexpensive material for enabling the easy commercial availability thereof. More particularly, the solar cell of the present invention comprises: a porous inorganic electron-transporting layer containing metal oxide particles; a light absorber containing inorganic semiconductors; and an organic hole-transporting layer containing an organic photovoltaic material.

Description

technical field [0001] The present invention relates to an all-solid-state nanostructured inorganic-organic heterojunction solar cell and its preparation method, in detail, it relates to the structure of a cheap and high-efficiency dye-sensitized solar cell (DSSC; dye sensitized solar cell) , combining the advantages of an inorganic thin-film solar cell that easily absorbs solar energy in a wide range from visible light to the near-infrared region, and an organic solar cell that can be inexpensively prepared by a solution process cell) advantages of the new structure of the solar cell and its preparation method. The solar cell has high efficiency and is excellent in stability over time, and it is easy to manufacture an inexpensive solar cell by applying inexpensive constituent materials and inexpensive processes. Background technique [0002] In order to solve the global environmental problems caused by the depletion of fossil energy and its use, research on renewable and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCY02E10/542Y02E10/50H01L51/4226H01L51/0036Y02E10/549Y02P70/50H10K85/113H10K30/151H10K30/50H01L31/04
Inventor 石相日任相赫张祯娥李在辉李龙熙金熙重
Owner KOREA RES INST OF CHEM TECH
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