Method of preparing counter electrode for dye-sensitized solar cell

Patent metadata

Field	Value
Publication number	US-9336957-B2
Application number	US-201414527506-A
Country	US
Kind code	B2
Filing date	Oct 29, 2014
Priority date	Oct 22, 2010
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

The following description relates to a method of low temperature sintering a catalyst layer that formed on one side of a counter electrode using a laser. It is possible to prepare a counter electrode for a dye-sensitized solar cell (DSSC) based on a flexible substrate easily because the method can be applied to a conducting substrate made of plastic materials as well as a conducting glass substrate.

First claim

What is claimed is:

1. A counter electrode comprising:
a conductive substrate selected from the group consisting of a plastic substrate including conductive materials and a plastic substrate including carbon compounds; and
a laser sintered catalyst layer formed on one side of the substrate.

2. The counter electrode of claim 1 , wherein the plastic substrate includes at least one selected from the group consisting of poly(ethylene terephthalate) (PET), poly(ethylene naphthalate) (PEN), polycarbonate (PC), polypropylene (PP), polyimide (PI), triacetyl cellulose (TAC), polyethersulfone, cyclo olefin copolymer (COC), polyarylite, a material including an organically modified silicate, a copolymer thereof, and a mixture thereof.

3. The counter electrode of claim 1 , wherein the catalyst layer is formed from a platinum precursor solution including at least one selected from the group consisting of H 2 PtCl 6 , H 2 PtCl 4 , and [Pt(NH 3 ) 4 ]Cl 2 , or a solution further including carbon compounds in said platinum precursor solution.

4. The counter electrode of claim 3 , wherein the carbon material is at least one selected from the group consisting of an activated carbon, a graphite, a carbon nano-tube, a carbon black, a graphene, and a mixture thereof.

5. The counter electrode of claim 1 , wherein the laser is a pulsed laser or a continuous laser.

6. The counter electrode of claim 1 , wherein the laser generates a beam having the wavelengths corresponding to UV-Visible absorption band of the catalyst layer.

7. The counter electrode of claim 1 , wherein the sintering is carried out by transferring the counter electrode horizontally after fixing the incident angle of the laser, or by using a laser scanner after fixing the counter electrode.

Assignees

• Korea Inst Sci & Tech

Inventors

• Ko Min-Jae
• Kang Tae-Yeon
• Kim Kyung-Kon
• Lee Doh-Kwon
• Kim Hong-Gon

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E10/542

  Dye sensitized solar cells · CPC title

• H01M14/00

  Electrochemical current or voltage generators not provided for in groups H01M6/00 - H01M12/00; Manufacture thereof · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H01G9/2095

  comprising a flexible sustrate · CPC title