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Method for preparing multilayer co-sensitized thin film by using light control technology

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

Active Publication Date: 2020-05-15
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

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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  • Method for preparing multilayer co-sensitized thin film by using light control technology

Examples

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 Smear 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 multilayer co-sensitized thin film by using a light control technology. The surface of a semiconductor film is coated with PEGylated gold nanoparticles, under the irradiation of near-infrared light, the gold nanoparticles inside absorb light energy and convert the light energy into heat energy, so that the gold nanoparticles can be molten at the temperature of 37 DEG C or above, the molten gold nanoparticles are washed with absolute ethyl alcohol, and the part, covered with the PEGylated gold nanoparticles, of the thin film can be immersed intoanother dye again. The thickness of the blank adsorption layer is influenced by controlling the illumination intensity and the illumination time of near-infrared light, and the multi-dye adsorption layer co-sensitized thin film is obtained through subsequent sensitization, so that the photoelectric conversion efficiency of the dye-sensitized solar cell is improved.

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 Applications(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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