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Photoelectric conversion properties of nickel, cobalt substituted zinc-tungsten heteropoly complexes/crystal violet ordered thin films

A technology of photoelectric conversion and complexes, applied in photovoltaic power generation, circuits, capacitors, etc.

Inactive Publication Date: 2019-10-25
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, this thin film modified electrode material has not been reported

Method used

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  • Photoelectric conversion properties of nickel, cobalt substituted zinc-tungsten heteropoly complexes/crystal violet ordered thin films
  • Photoelectric conversion properties of nickel, cobalt substituted zinc-tungsten heteropoly complexes/crystal violet ordered thin films
  • Photoelectric conversion properties of nickel, cobalt substituted zinc-tungsten heteropoly complexes/crystal violet ordered thin films

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: (ZnNiW / JJZ) n Preparation and Characterization of Multilayer Ordered Thin Films

[0016] (ZnNiW / JJZ) n The preparation of the multilayer inorganic / organic ordered film is completed through the following steps.

[0017] Substrate hydroxylation: The conductive glass substrate is immersed in a 1:1:5 mixed solution of ammonia water (25%), hydrogen peroxide (30%) and water, heated to 70°C, soaked for 20min, and washed with distilled water after taking it out , air dry.

[0018] Silanization of the substrate: the hydroxylated conductive glass substrate was immersed in a 5% volume ratio 3-aminopropyl-triethoxysilane ethanol solution for 8 hours, washed with ethanol after taking it out, and dried in air.

[0019] Substrate protonation: immerse the silanized substrate in a sulfuric acid solution with pH = 3 for 30 minutes, take it out, wash it with distilled water, and dry it with air.

[0020] Dip the protonated conductive glass substrate into a 1.0×10 -3 mol...

Embodiment 2

[0022] Embodiment 2: (ZnCoW / JJZ) n Preparation and Characterization of Multilayer Ordered Thin Films

[0023] (ZnCoW / JJZ) n The preparation steps and testing steps of the film refer to Example 1. where 1.0×10 -3 mol / L ZnNiW aqueous solution is replaced by 1.0×10 -3 mol / L ZnCoW aqueous solution.

[0024] (ZnCoW / JJZ) prepared in embodiment 2 n The UV-Vis absorption spectrum of the film is figure 2 shown. The absorbance of the characteristic absorption peaks in the 203, 250 and 566-610nm regions of the prepared film increases linearly with the increase of the number of layers, indicating that each layer of the film ZnCoW and crystal violet are uniformly deposited on the substrate.

Embodiment 3

[0025] Embodiment 3: Photocurrent test of thin film

[0026] The specific process of the photocurrent test experiment of the thin film is: (ZnNiW / JJZ) deposited on the conductive glass substrate n or (ZnCoW / JJZ) n The thin film is used as the working electrode, the platinum wire is used as the counter electrode, and the saturated calomel electrode is used as the reference electrode. At room temperature, 0.1mol / L Na 2 SO 4 tested in an aqueous solution. The light source is a 500W ultra-high pressure spherical xenon lamp high-brightness light source system assembled by Beijing Changtuo Technology Co., Ltd., and the simulated sunlight is 100mW / cm during the test. 2 (730nm>λ>325nm), the intensity of incident light was measured by a radiometer calibrated with a standard silicon cell produced by the Optical Instrument Factory of Beijing Normal University.

[0027] Different layers (ZnNiW / JJZ) prepared in embodiment 1 n Thin film at -0.3V, light intensity 100mW / cm 2 The photocurr...

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Abstract

The invention provides a heteropoly complex and organic dyestuff hybrid ordered thin film material having photoelectric conversion performance and relates to a nickel and cobalt-substituted zinc-tungsten heteropoly complex and crystal violet ordered thin film preparation method and photoelectric conversion performance evaluation. A nickel and cobalt-substituted zinc-tungsten heteropoly complex andcrystal violet ordered thin film is formed through electrostatic self-assembly of [Zn3M2W19O68]<12->(M=Ni,Co) anions and crystal violet cations; and the optical current density of the prepared 4-layer thin film in a 0.1mol / L Na2SO4 solution, and under 0.3V(vs SCE) bias voltage and 100mW / cm<2> white light irradiation can reach 8.19 microamperes / cm<2> and 8.69 microamperes / cm<2> respectively. The prepared thin film has a potential application prospect in the aspect of development and utilization of a solar cell working electrode.

Description

technical field [0001] The invention relates to an inorganic / organic ordered thin film, in particular to an inorganic / organic ordered thin film of zinc-tungsten heteropolycomplexes substituted by nickel and cobalt and crystal violet dye. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, clean and pollution-free renewable energy has attracted widespread attention. Because of its abundant reserves, solar energy can be directly developed and utilized without mining and transportation, and is easy to use. More importantly, the clean and pollution-free characteristics of solar energy make it one of the best alternative energy sources to solve the energy crisis and protect the environment. More and more attention has been paid. [0003] In 1991, O'Regan and Dye-sensitized solar cells (DSSCs) based on ruthenium dyes are reported for the first time, which opens up a new field of solar cell research. Compared with conventional ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/2063Y02E10/542
Inventor 高丽华赵文豪王克志
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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