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A method of preparing multi-layer co-sensitized film by light control technology

A technology of co-sensitization and light control, applied in the field of electrochemistry, can solve the problem that the dye adsorption depth is difficult to control, and achieve good light-to-heat conversion efficiency

Active Publication Date: 2021-06-22
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
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Problems solved by technology

However, in actual operation using the separate sensitization method, there are TiO 2 Difficult to control the dye adsorption depth on the upper part of the film

Method used

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  • A method of preparing multi-layer co-sensitized film by light control technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: On TiO 2 Apply PEG-AuNPs on the film and irradiate with two kinds of near-infrared light with different powers (such as 50mW and 1200mW), and irradiate for the same time under the same conditions. It can be found that the thicker the thickness of the blank layer obtained by using a higher power light source .

Embodiment 2

[0026] Example 2: On TiO 2 Apply PEG-AuNPs on the film, and use the same near-infrared light source to irradiate for different times (for example, 5 minutes and 10 minutes). It can be found that under near-infrared light irradiation, the longer the irradiation time, the thicker the blank layer obtained.

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Abstract

The invention discloses a method for preparing a multi-layer co-sensitized film by using light control technology. By coating PEGylated gold nanoparticles on the surface of the semiconductor film, under the irradiation of near-infrared light, the gold nanoparticles inside absorb light energy, and the Light energy is converted into heat energy, resulting in melting above 37°C. After melting, the part of the film covered with PEGylated gold nanoparticles can be re-immersed in another dye after being washed with absolute ethanol. By controlling the intensity and time of near-infrared light to affect the thickness of the blank adsorption layer, a multi-dye adsorption layer co-sensitized film is obtained through subsequent sensitization to improve the photoelectric conversion efficiency of dye-sensitized solar cells.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to a method for preparing a multi-layer co-sensitized thin film using light control technology. Background technique [0002] Dye-sensitized solar cell (DSSC) is mainly a new type of solar cell developed by simulating the principle of photosynthesis. Dye-sensitized solar cells are cheap, environmentally friendly and pollution-free nano-TiO 2 And photosensitizing dyes as the main raw materials, simulating the use of solar energy by plants in nature for photosynthesis, and converting solar energy into electrical energy. Dye-sensitized solar cells are mainly composed of nanoporous semiconductor films, dye sensitizers, redox electrolytes, counter electrodes, and conductive substrates. Among them, nanoporous semiconductor films are usually metal oxides TiO 2 , gathered on a transparent conductive glass plate as the cathode of the DSSC. The counter electrode is used as a redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/20H01G9/2031Y02E10/542
Inventor 吴宗建刘伟庆施菁毛志敏蔡洪峰吴旭东范瑜鑫
Owner NANCHANG HANGKONG UNIVERSITY
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