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Catalytic carbon counter electrode for dye-sensitized solar cells

A technology of electric pair and electrode structure, applied in the direction of electrolytic capacitors, circuits, capacitors, etc., can solve complex and other problems, and achieve the effects of low resistivity, high electrocatalytic activity, and high power conversion efficiency

Inactive Publication Date: 2016-05-11
THE THAILAND RESERACH FUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nonetheless, existing attempts to replace platinum catalysts with carbon-based material catalysts have been unnecessarily complicated

Method used

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  • Catalytic carbon counter electrode for dye-sensitized solar cells
  • Catalytic carbon counter electrode for dye-sensitized solar cells
  • Catalytic carbon counter electrode for dye-sensitized solar cells

Examples

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Embodiment 1-5

[0026] In one embodiment, a process for preparing, providing, or fabricating a carbon-based counter electrode or counter electrode structure according to the present disclosure is as follows. More specifically, with regard to Examples 1-5 herein, the following process was used to prepare an amorphous carbon counter electrode structure.

[0027] 1. Place each glass substrate 30 loaded with the TCO layer 20 in an ultrasonic cleaning machine and use a series of acetone, methanol and deionized water (DI) to clean, each using acetone, methanol and deionized water for 30 minutes.

[0028] 2. Then the substrate 30 is placed on the ground electrode of the radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) system, and the vacuum chamber is evacuated to a pressure of about 1.5×10 -5 support.

[0029] 3. The surface of the TCO layer 20 supported by the substrate 30 was placed in an RF-PECVD system and cleaned with argon (Ar) plasma for 15 minutes at a frequency of 13.5...

Embodiment 5

[0045] The resistivity of Example 5 increased slightly to 6.98 ohm / square, which may be due to the decomposition of diamond-like carbon due to thermal degradation, sp 3 The percentage increased accordingly to 51.11%.

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Abstract

A carbon catalyst layer for electrolyte based tri-iodide / iodine redox couples includes amorphous carbon, oxygen, silicon, tin and fluorine. The catalyst layer can be coated on a transparent conducting oxide (TCO) glass substrate for use as a counter electrode in a dye- sensitized solar cell (DSSC). By annealing the coated carbon catalyst layer at a temperature between approximately 250 - 650 DEG C (e.g., 300 - 600 DEG C) to establish an appropriate sp3 orbital fraction, the carbon catalyst layer can have low electrical resistivity, high electro-catalytic activity, and excellent photoelectric conversion efficiency, which has been measured as 98.32% of that of a DSSC having a conventional platinum catalyst based counter electrode.

Description

technical field [0001] The present disclosure relates to a carbon catalyst layer used as a photoelectric conversion element in a dye-sensitized solar cell (DSSC). Background technique [0002] Dye-sensitized solar cells (DSSCs) were invented by B.O'Reagan and M. Glazer in 1991, and were described in "A dye-sensitized colloidal TiO 2 Thin film low-cost, high-efficiency solar cells" (B.O'Regan and M.Gratzel, Nature, 1991, 353, 737-740). The working principle of DSSCs is completely different from that of traditional p-n junction solar cells, because DSSCs need Molecular sensitizer to generate free electrons. A typical DSSC structure includes a working electrode or photoelectrode, a counter electrode and an electrolyte solution. The working electrode is coated with mesoporous TiO 2 Nanoparticles immobilized with trimeric ruthenium complex dye sensitizer RuL 2 (μ-(CN)Ru(CN)L' 2 ) 2 transparent conductive oxide (TCO) glass substrate, where L is 2,2'-bipyridine-4,4'-dicarboxyli...

Claims

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Application Information

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IPC IPC(8): H01G9/20C01B31/02C01B31/04
CPCH01G9/2022Y02E10/542Y02P70/50
Inventor 维塔雅·阿门凯巴姆萨穆克·披曼庞皮肯·阿帕猜纳瑞特·费巴特
Owner THE THAILAND RESERACH FUND