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A kind of dye-sensitized solar cell photoanode and preparation method thereof

A solar cell and dye sensitization technology, which is applied in the field of dye-sensitized solar cell photoanode and its preparation, can solve problems such as open circuit voltage loss, achieve the effect of inhibiting charge recombination and reducing dark current

Inactive Publication Date: 2017-02-01
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of conductivity alone, the transparent TCO electrode used for electron collection has extremely high conductivity (>10 3 S / cm), however, if we use TCO as the photovoltaic layer, there are the following disadvantages: the conduction band of the TCO material is lower than that of TiO 2 and ZnO, when electrons are transferred from the dye to the conduction band of TCO, due to the thermal homogenization of the carriers, it will inevitably cause a great loss of open circuit voltage

Method used

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  • A kind of dye-sensitized solar cell photoanode and preparation method thereof
  • A kind of dye-sensitized solar cell photoanode and preparation method thereof
  • A kind of dye-sensitized solar cell photoanode and preparation method thereof

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Embodiment 1

[0038] A kind of preparation method of photoanode of dye-sensitized solar cell, its concrete steps are:

[0039] (1) Add SnCl to the glass bottle 2 2H 2 O2 2.85 mg, ammonium fluoride 4.50 mg, polystyrene (PS) microsphere suspension (diameter 300 nm) 275 μl, polyethylene glycol 60 μl (molecular weight 200), the resulting mixture was ultrasonicated for 2 hours, and mixed uniformly;

[0040] (2) Take 45 μl of the mixture from the suspension obtained above and drop it on the FTO conductive glass to form a transparent conductive oxide film with a thickness of 10 μm, and use scotch tape to define the electrode area as 1.0*1.0cm 2 ;

[0041] (3) The obtained electrode was dried overnight at room temperature and then placed in a muffle furnace. After rising from room temperature to 450°C, it was kept for 2 hours to completely remove the PS template to obtain a three-dimensional transparent conductive oxide hollow sphere electrode; the heating rate was 1°C / Minute;

[0042] (4) hea...

Embodiment 2

[0045] (1) Add 41.63 mg of tert-butoxide tin (IV), 4.50 mg of ammonium fluoride and 275 μl of polystyrene (PS) microsphere suspension (diameter 600 nm), 60 μl of polyethylene glycol (molecular weight 800 ), the resulting mixture was ultrasonicated for 2 hours and mixed uniformly;

[0046] (2) Take 40 μl of the mixture from the suspension obtained above and drop it on the FTO conductive glass to form a transparent conductive oxide film with a thickness of 10 μm, and use scotch tape to define the electrode area as 1.0*1.0cm 2 ;

[0047] (3) The obtained electrode was dried overnight at room temperature and then placed in a muffle furnace. After rising from room temperature to 450°C, it was kept for 2 hours to completely remove the PS template to obtain a three-dimensional transparent conductive oxide hollow sphere electrode; the heating rate was 1°C / Minute;

[0048] (4) heat-treating the obtained electrode in argon for 30 minutes to improve electrical conductivity, and the he...

Embodiment 3

[0051] (1) Add Zn(Ac) to the glass bottle 2 2H 2 O13.83mg, anhydrous AlCl 3 1. 20mg and polystyrene (PS) microsphere suspension (diameter 526nm) 275μl, polyethylene glycol 60μl (molecular weight 200), the resulting mixture was ultrasonicated for 2 hours, and mixed uniformly;

[0052] (2) Take 40 μl of the mixture from the suspension obtained above and drop it on the FTO conductive glass to form a transparent conductive oxide film with a thickness of 10 μm, and use scotch tape to define the electrode area as 1.0*1.0cm 2 ;

[0053] (3) The obtained electrode was dried overnight at room temperature and then placed in a muffle furnace. After rising from room temperature to 450°C, it was kept for 2 hours to completely remove the PS template and form a transparent conductive oxide film with a thickness of 10 μm, which was defined with scotch tape The electrode area is 1.0*1.0cm 2 ;The heating rate is 1°C / min;

[0054] (4) heat-treating the obtained electrode in argon for 30 min...

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Abstract

The invention relates to a dye-sensitized solar cell photoanode and a producing method of the dye-sensitized solar cell photoanode, and belongs to the technical field of energy. The dye-sensitized solar cell photoanode comprises a three-dimensional transparent conductive oxide hollow sphere framework and thin layers TiO2 deposited on the inner surface and the outer surface of a transparent conductive oxide hollow sphere respectively. The dye-sensitized solar cell photoanode is provided with a polystyrene and polyethylene glycol composite template, a transparent conductive oxide hollow sphere electrode is manufactured by mixing the polystyrene and polyethylene glycol composite template with a transparent conductive oxide precursor, the inner surface and the outer surface of the transparent conductive oxide hollow sphere are respectively provided with one layer of TiO2 in the deposited mode, and heat treatment is carried out in argon finally. A transmission path of photoproduction electrons in a photovoltaic layer is changed fundamentally, the electron transmission distance is greatly shortened while light harvesting efficiency is improved, the slow spreading process of the electrons in the photovoltaic layer is replaced with a faster field driving charge separation process, and therefore charge recombination of the electrons on an interface layer and electrolytes is effectively restrained, and dark current in a battery is reduced.

Description

technical field [0001] The invention relates to a photoanode of a dye-sensitized solar cell and a preparation method thereof, belonging to the field of energy technology. Background technique [0002] The energy problem is a common problem faced by mankind. Due to the depletion of fossil fuels and the environmental pollution caused by the use of a large number of fossil fuels, it has seriously threatened the survival and development of human beings. The large-scale application of solar energy is the solution to energy and environmental problems. key breakthrough. In this context, solar photovoltaic power generation and solar thermal utilization have become the fastest-growing renewable energy technologies in the world in the past decade. [0003] At present, silicon cells occupy more than 95% of the global market share of solar cells. However, smelting high-purity silicon requires a large amount of energy. Calculations show that the energy consumed to manufacture monocryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/04H01G9/042
Inventor 刘法谦李荣勋丁乃秀刘莉苏娟李超芹李伟刘光烨
Owner QINGDAO UNIV OF SCI & TECH
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