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Dye for dye-sensitized solar cell, and solar cell prepared from same

A technology of solar cells and dye sensitization, applied in the field of dye-sensitized solar cells, can solve the problems of increasing the photoelectric efficiency of solar cells and the like

Inactive Publication Date: 2007-10-24
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since conventional methods have limitations in increasing the photoelectric efficiency of solar cells, it is necessary to develop new technologies that can improve photoelectric efficiency

Method used

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  • Dye for dye-sensitized solar cell, and solar cell prepared from same
  • Dye for dye-sensitized solar cell, and solar cell prepared from same
  • Dye for dye-sensitized solar cell, and solar cell prepared from same

Examples

Experimental program
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example 1

[0191] Example 1: Fabrication of dye-sensitized solar cells

[0192] Dye (5) was synthesized according to Reaction Scheme 1 below. Referring to Reaction Scheme 1, the synthesis of dye (5) will be described in more detail. Iodine, periodic acid, distilled water, sulfuric acid and acetic acid were added to fluorene (Aldrich Company, St. Louis, Missouri), and then reacted at 90° C. until the color of iodine in the resulting mixed solution disappeared. After the reaction was completed, excess distilled water was added to the mixed solution, followed by filtering the mixed solution with a Buchner funnel. The filtrate was rinsed with water, and the filtrate was dried. A small amount of acetone was added to the dry product and kept at low temperature to obtain pale yellow 2-iodo-9-fluorene (5a).

[0193] Subsequently, tetrahydrofuran was added to the prepared 2-iodo-9-fluorene (5a), and then, potassium tert-butoxide was slowly added to the resulting mixture at 0°C...

example 2

[0203] Example 2: Fabrication of dye-sensitized solar cells

[0204] Tetrakis(triphenylphosphine) catalyst was added to N,N-bis(9,9-dimethylfluoren-2-yl)-4-bromoaniline according to Example 1 as shown in Reaction Scheme 2 below In (5c), tetrahydrofuran was added to 2,2'-thiophene (manufactured by Aldrich). Next, n-butyllithium was added to the resulting mixture at -78°C to prepare a mixed solution. The mixed solution was kept at room temperature, and trimethyl borate (manufactured by Aldrich) was added to the mixed solution. Aqueous 5-{(2,2'-thiophene)boronic acid} (5f) aqueous solution (KOH) was added to the mixed solution. The resulting mixed solution was kept at 90°C for 15 hours. The mixed solution was cooled to room temperature, and after all the solvent in the solution was removed, it was separated by chromatography to obtain a light yellow solid 2-[N,N-bis(9,9-dimethylfluoren-2-yl)benzene ]-5,5'-thiophene (5g). Here, an eluent was prepared by mixing ethyl...

example 3

[0210] Example 3: Fabrication of dye-sensitized solar cells

[0211] A dye-sensitized solar cell was fabricated according to the same method as in Example 1, except that 5 mM of deoxycholic acid of the following Chemical Formula 12 was additionally added to the dye dispersion.

[0212] [chemical formula 12]

[0213]

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Abstract

The present embodiments relate to a dye for a dye-sensitized solar cell and a dye-sensitized solar cell prepared from the same. The dye includes a fluorenyl-containing compound. The dye according to the present embodiments is applied to a light absorption layer to improve photovoltaic efficiency and increase an open-circuit voltage.

Description

[0001] This application claims Korean Patent Application No. 10-2006-0034501 filed with the Korean Intellectual Property Office on April 17, 2006 and Korean Patent Application No. 10-2007-0024193 filed with the Korean Intellectual Property Office on March 12, 2007 Priority and Benefit of Patent Application, the entire contents of which are hereby incorporated by reference. technical field [0002] These examples relate to a dye (photosensitizer) for a dye-sensitized solar cell and a dye-sensitized solar cell produced from the dye. More specifically, the embodiments relate to a dye for a dye-sensitized solar cell capable of improving photoelectric efficiency and open circuit voltage of a solar cell, and a dye-sensitized solar cell having improved photoelectric efficiency. Background technique [0003] Various research attempts have been made in order to develop energy sources that can replace conventional fossil fuels and solve t...

Claims

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Application Information

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IPC IPC(8): C09B57/00H01M14/00H01G9/20H01L31/04H01L51/42
CPCY02E10/542Y02E10/549H01G9/2031C09B57/02H10K85/655H10K85/636H10K85/633H10K85/6576
Inventor 李在官李知爰高在中金相勋文琇津姜文盛权问奭
Owner SAMSUNG SDI CO LTD
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