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Photovoltaic cell using catalyst-supporting carbon nanotube and method for producing the same

A technology of carbon nanotubes and carbon nanotube layers, applied in the field of manufacturing them, can solve the problems of low conversion efficiency of photovoltaic cells and the like

Inactive Publication Date: 2008-01-16
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conversion efficiency of this photovoltaic cell is lower than that of photovoltaic cells using Pt thin films

Method used

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  • Photovoltaic cell using catalyst-supporting carbon nanotube and method for producing the same

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preparation example Construction

[0043] The preparation of the photoelectrode 100 of the dye-sensitized photovoltaic cell may include: forming a metal oxide film 130 by coating a porous metal oxide on the conductive material 120 placed on the transparent substrate 110, firing the substrate 110, and baking the substrate 110 110 is immersed in a solution containing dissolved dye 140 for a period of time, so that the dye 140 is adsorbed on the surface of the metal oxide film 130 .

[0044] The transparent substrate 110 may be the same as disclosed above in the description about the cathode.

[0045] The metal oxide 130 is selected from titanium oxide, niobium oxide, hafnium oxide, tungsten oxide, tin oxide, zinc oxide, and combinations comprising at least one of the foregoing, but is not limited thereto. In addition, metal oxides can be applied by coating methods such as screen printing or spin coating.

[0046] As for the dye 140, the material used therefor is not limited as long as it is photosensitivity and ...

preparation example 1

[0052] Preparation Example 1: Preparation of Pt-loaded carbon nanotubes

[0053] 0.9422g of H 2 PtCl 6 Soluble in about 20g ethylene glycol. Individually, about 0.25 g of single-walled carbon nanotubes were dispersed in a mixture of about 100 g of water and about 80 g of ethylene glycol. The prepared carbon nanotube solution was added into the Pt solution, and the pH value of the mixture was adjusted to 11 with NaOH. Thereafter, the mixture was allowed to stand at about 105° C. for 2 hours. Then heating at about 110° C. for about 1 hour reduces the platinum to metallic platinum and deposits it on the surface of the carbon nanotubes. After the reaction, the reaction mixture was centrifuged to separate the Pt-loaded carbon nanotubes. The Pt-loaded carbon nanotubes thus isolated are washed with water and subjected to freeze-drying or freeze-drying. Figure 2 shows a transmission electron microscope (TEM) image of a representative sample of the Pt-loaded carbon nanotubes pr...

preparation example 2

[0054] Preparation example 2: preparation of cathode

[0055] About 0.55g of Pt-loaded carbon nanotubes prepared in Preparation Example 1, about 0.5g of glass frit, about 14g of binder, and about 15g of terpineol were mixed and uniformly dispersed for 30 minutes with a 3-roll mill to form paste. Then, the FTO-coated glass substrate was coated with the paste prepared above and dried at about 70° C. for about 30 minutes. Next, the glass substrate was baked at 430° C. for about 20 minutes under a nitrogen atmosphere for surface treatment to prepare a cathode.

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Abstract

Disclosed herein is a photovoltaic cell using catalyst-supported carbon nanotubes and a method for producing the same. More particularly, the photovoltaic cell includes a photo anode, a cathode including a layer of metal catalyst particle supporting carbon nanotubes, and an electrolyte disposed between the photo anode and the cathode. The photovoltaic cell is economic in terms of production costs and process steps, and shows improved catalytic activity due to an enlarged contact area and conductivity, resulting in excellent photoelectric efficiency.

Description

[0001] Pursuant to 3 5 U.S.C. §119(a), this non-provisional application claims priority and all benefits arising from Korean Patent Application No. 10-2006-0065835, filed July 13, 2006, the disclosure of which It is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to a photovoltaic cell using catalyst-loaded carbon nanotubes and a method for preparing the same. More particularly, the present invention relates to a photovoltaic cell that can be easily manufactured by a simple and economical method by using carbon nanotubes containing metal catalyst particles supported thereon, and a method of manufacturing the same. Background technique [0003] In order to solve the current energy problems, various researches on alternative energy that can replace existing fossil fuels are being actively conducted. In particular, many attempts have been made to develop methods of utilizing natural energy sources such as wind energy, at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/04H01L31/18H01L51/42H01L51/48H01G9/20H01M14/00H10K99/00
CPCY02E10/542H01L51/0048B82Y10/00H01L51/0086H01G9/2031H01L51/444H01G9/2022Y02E10/549Y02E10/547Y02P70/50H10K85/221H10K85/344H10K30/821C01B32/158B82Y40/00H01L31/0224H01L31/042H01L31/1804C01B2202/34C01B2202/36C01B2202/02C01B2202/04
Inventor 朴永俊李殷成李晶姬朴商喆南政圭
Owner SAMSUNG ELECTRONICS CO LTD
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