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Dye-sensitized solar cell and method of making the same

A solar cell and dye-sensitized technology, which is applied in the field of dye-sensitized solar cells and their production, can solve the problems of low conversion efficiency dye-sensitized cells, etc., and achieve the goal of improving photoelectric conversion efficiency, enhancing life, and reducing transmission and total reflection Effect

Active Publication Date: 2016-03-30
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

[0003] The relatively low conversion efficiency has long been the main bottleneck in the development of dye-sensitized cells

Method used

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  • Dye-sensitized solar cell and method of making the same
  • Dye-sensitized solar cell and method of making the same

Examples

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preparation example Construction

[0044] Wherein, the preparation method of the core-shell structure nanoparticle sol in step S10 includes the following steps:

[0045] S10ˊ, the oxidation-reduction reaction of the oxidant and the reducing agent solution containing the metal element solution occurs, and the mixture is stirred at a fixed speed and frequency under a constant temperature condition, and after a full reaction, it is naturally cooled to room temperature while maintaining a stirring state to obtain a metal nanoparticle sol;

[0046] S20ˊ, PVP particles dissolve in water to form PVP molecular sol;

[0047] S30', mixing the aforementioned metal nanoparticle sol and PVP molecular sol, and then continuously stirring for more than ten hours under normal temperature conditions to obtain a core-shell structured nanoparticle sol with a metal core embedded in the PVP organic shell.

[0048] List a few specific examples as follows:

Embodiment 1

[0050] In Example 1, a core-shell structured nanoparticle (Au / PVP) with gold as the core and PVP wrapped in an outer layer was selected, and a dye-sensitized battery containing Au / PVP was prepared by a titration spin coating method. The Au / PVP preparation method is mainly divided into three steps: 1. Preparation of gold sol; 2. Preparation of PVP aqueous solution; 3. Mixing reaction of 1 and 2 to obtain Au / TiO 2 . The preparation method of gold nanoparticles adopts the redox reaction between chloroauric acid solution and sodium citrate solution. In this example, 200mL of 10-4mol / L chloroauric acid solution and 2mL of 4*10-2mol / L sodium citrate solution are used. , Stirring at a constant temperature of 100 degrees Celsius at a frequency of 500 revolutions per minute, fully reacting for 15-20 minutes and then cooling to room temperature while maintaining agitation to obtain a gold nanoparticle sol with an average diameter of about 15-100nm; the molecular weight is 10000-30000 PVP...

Embodiment 2

[0053] In the second embodiment, a core-shell structured nanoparticle (Au / PVP) with gold as the core and PVP wrapped in an outer layer is selected, and a dye-sensitized battery containing Au / PVP is prepared by an ultraviolet curing method. The Au / PVP preparation method is mainly divided into three steps: 1. Preparation of gold sol; 2. Preparation of PVP aqueous solution; 3. Mixing reaction of 1 and 2 to obtain Au / TiO 2 . The preparation method of gold nanoparticles adopts the redox reaction between chloroauric acid solution and sodium citrate solution. In this example, 200mL of 10-4mol / L chloroauric acid solution and 2mL of 4*10-2mol / L sodium citrate solution are used. , Stirring at a constant temperature of 100 degrees Celsius at a frequency of 500 revolutions per minute, fully reacting for 15-20 minutes and then cooling to room temperature while maintaining agitation to obtain a gold nanoparticle sol with an average diameter of about 15-100nm; the molecular weight is 10000-30...

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Abstract

The invention relates to the technical field of new energy and discloses a dye-sensitized solar cell. The dye-sensitized solar cell comprises a transparent electrode, a counter electrode and an electrolyte layer between the transparent electrode and the counter electrode, nano-porous semiconductor films are arranged on the inner surface of the transparent electrode, a transparent substrate is arranged on the outer side of the transparent electrode, a counter transparent substrate is arranged on the outer side of the counter electrode, the electrolyte layer contains mixed liquid of electrolyte and dye sensitizer, and core-shell structured nano particles with surface plasma effect are absorbed in the nano-porous semiconductor films. Each of the core-shell structured nano particles comprises a PVP (polyvinyl pyrrolidone) organic matter shell and a metal core embedded in the PVP organic matter shell. Due to the core-shell structured nano particles, overall light absorption efficiency of the dye-sensitized solar cell is improved, and finally the purpose for improving photoelectric converting efficiency of the dye-sensitized solar cell is realized.

Description

Technical field [0001] The invention relates to the field of new energy sources, in particular to a dye-sensitized solar cell using the plasma effect on the surface of nanoparticles and a manufacturing method thereof. Background technique [0002] With the gradual exhaustion of fossil fuels and the increasing greenhouse effect brought about by the use of fossil fuels, the development of new energy with environmental protection value has become an urgent matter. Because solar energy is an energy source that is endless and clean and does not cause environmental pollution, scientists from various countries are committed to developing solar cells of various materials for use in various electrical or electronic products in life. In 1991, the research team of the Higher Institute of Technology in Lausanne, Switzerland introduced the nanocrystalline multi-void thin film into the dye-sensitized cell, which increased its efficiency to more than one percent, and gradually became one of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542Y02P70/50
Inventor 刘仿许骐黄翊东奥良彰迁村讫裕
Owner TSINGHUA UNIV
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