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Semi-hemicyanine derivatives with photoelectrochemistry activity and self-assembly polyoxometallate film

A technology of polyoxometalate and hemicyanine derivatives, applied in photovoltaic power generation, circuits, electrical components, etc., to improve photoelectrochemical performance and inhibit recombination

Inactive Publication Date: 2012-08-15
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the use of hemicyanine derivatives as organic components and polyoxometalates to assemble thin-film materials with photoelectrochemical activity.

Method used

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  • Semi-hemicyanine derivatives with photoelectrochemistry activity and self-assembly polyoxometallate film
  • Semi-hemicyanine derivatives with photoelectrochemistry activity and self-assembly polyoxometallate film
  • Semi-hemicyanine derivatives with photoelectrochemistry activity and self-assembly polyoxometallate film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: (BW 11 Co / BDMASP) n Preparation of multilayer organic-inorganic thin films

[0016] First, clean the quartz substrate and ITO glass substrate: place the quartz substrate in newly prepared 30% H 2 o 2 with 98%H 2 SO 4 Soak in (3:7v / v) mixture for 2h, take it out and wash it with distilled water; then immerse in NH 3 ·H 2 O(25%):H 2 o 2 (30%): H 2 O=1:1:5 (V / V / V) in a 70°C mixed solution for 20 minutes, washed with distilled water after taking it out, and blown dry with nitrogen to obtain a quartz substrate for film formation. Clean the conductive glass substrate: clean the conductive glass substrate with detergent, take it out, wash it with distilled water, and then enter the NH 3 ·H 2 O(25%):H 2 o 2 (30%): H 2 O=1:1:5 (V / V / V) 70°C mixed solution was ultrasonically cleaned for 10 minutes, washed with distilled water after taking it out, and dried with nitrogen to obtain a conductive glass substrate for film formation.

[0017] Then silanize t...

Embodiment 2

[0021] Embodiment 2: (BW 11 Ni / BDMASP) n Preparation of multilayer organic-inorganic thin films

[0022] Synthesis steps and testing steps refer to Example 1. The immersion solution of the protonated substrate adopts 1.0×10 -3 M's BW 11 Ni solution.

[0023] The UV-Vis spectrum shows that the prepared films have BW at wavelengths of 264nm and 479nm 11 The absorbance of Ni / BDMASP increases linearly with the increase of the number of layers, indicating that the prepared films have good uniform growth.

Embodiment 3

[0024] Embodiment 3: (BW 11 Cu / BDMASP) n Preparation of multilayer organic-inorganic thin films

[0025] Synthesis steps and testing steps refer to Example 1. The immersion solution of the protonated substrate adopts 1.0×10 -3 M's BW 11 Cu solution.

[0026] The UV-Vis spectrum shows that the prepared films have BW at wavelengths of 264nm and 481nm 11 The absorbance of Cu / BDMASP increases linearly with the increase of the number of layers, indicating that the prepared films have good uniform growth.

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Abstract

The invention provides semi-hemicyanine derivatives with photoelectrochemistry activity and a self-assembly polyoxometallate film, which relate to the preparation method and the photoelectrochemistry activity evaluation of the semi-hemicyanine derivatives and the self-assembly polyoxometallate film. The film comprises (E)-1,1'-(Hexane-1,6-diyl) bis (4-(4-dimethylamino) styryl) pyridinium) bromide and K7 [BW11O39M(H2O)], wherein M is Co, Ni, Zn, Cu and Cd, and the film is prepared through a static layer-by-layer self-assembly method. Under the irradiation of white light (730nm> lambda>325nm) with applied bias voltage being minus 0.3V (vs SCE) and light intensity being 100mW / cm<2>, the film can generate light current of 1.050mu A to 1.482mu A, thus the film has a potential application prospect in the aspect of solar cells.

Description

technical field [0001] The invention relates to an organic-inorganic self-assembled thin film, in particular to an organic-inorganic thin film self-assembled by a semicyanine derivative and a polyoxometalate. Background technique [0002] With the development of the world economy and the rapid increase of population, the human demand for energy is increasing day by day. At present, fossil energy such as coal, oil and natural gas accounts for more than 90% of the energy used by human beings. However, the energy crisis and environmental pollution caused by excessive exploitation and use of fossil energy have gradually emerged, and have become constraints to the sustainable development of the economy and society. Determinants of healthy development. The development of new energy is one of the effective ways to solve the above problems. Solar energy is a renewable resource with the characteristics of universal, harmless, huge and long-lasting, so it has been paid more and more...

Claims

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Application Information

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IPC IPC(8): H01L51/46
CPCY02E10/549
Inventor 高丽华王克志粟京平
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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