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Dropping-coating preparation method for photoelectric-conversion composite coating films based on C60/tetra-n-octylammonium bromide

A technology of tetraoctylammonium bromide and composite coating, which is applied in the field of drop coating preparation, can solve problems such as easy aggregation, low photoelectric conversion efficiency, and unstable electrochemical properties of the film, and achieve high photoelectric conversion performance and voltage response The effects of sensitivity, high-efficiency photoelectric conversion capability, and good application prospects

Inactive Publication Date: 2009-10-21
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the Langmuir-Blodget and self-assembly methods have less active material loads and lower photoelectric conversion efficiency; although the electrodeposition method can load a larger amount of active materials, the preparation conditions are more complicated and the equipment requirements are higher.
As the most common film-making method - drop coating method, due to C 60 There is a strong intermolecular attraction between the molecules, and it is easy to aggregate, so that the C prepared by drop coating 60 The electrochemical properties of the film are unstable (J.Am.Chem.Soc.1991, 113, 5456), which affects its application in photoelectric energy conversion systems

Method used

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  • Dropping-coating preparation method for photoelectric-conversion composite coating films based on C60/tetra-n-octylammonium bromide
  • Dropping-coating preparation method for photoelectric-conversion composite coating films based on C60/tetra-n-octylammonium bromide
  • Dropping-coating preparation method for photoelectric-conversion composite coating films based on C60/tetra-n-octylammonium bromide

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Experimental program
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Effect test

Embodiment 1

[0025] Example 1: C 60 / Tetraoctylammonium bromide composite coating film preparation by drop coating and photoelectric conversion performance test

[0026] First, clean the indium tin oxide conductive glass electrode with clear water, then ultrasonically clean it with acetone and ethanol in sequence, and then blow it dry with nitrogen flow. 1.0mM and 10mM C 60 Mix with tetraoctylammonium bromide in toluene, dissolve in ultrasonic, and get purple C 60 and tetraoctylammonium bromide in toluene. With a 10 µl pipette, transfer the C 60 and tetraoctylammonium bromide toluene solution evenly drop-coated on the surface of indium tin oxide conductive glass electrode, drop-coated three times, 10 μl each time. Dispensing area is 1.2cm 2 , the drop-coated film layer was left to dry in air at room temperature, and the coating surface was further purged with high-purity nitrogen flow before the photoelectrochemical experiment.

[0027] Use fluorescence cuvette as photoelectrochemic...

Embodiment 2

[0029] The concentrations of 1.0mM and 5mM C 60 Mix with tetraoctyl ammonium bromide in toluene, all the other operations are as embodiment 1, and coating area is 1.0cm 2 , the resulting photocurrent is 645nA / cm 2 . The result is as Figure 4 Show.

Embodiment 3

[0031] The concentrations of 1.0mM and 15mM C 60 Mix in toluene with tetraoctyl ammonium bromide, all the other operations are as embodiment 1, and coating area is 0.8cm 2 , the resulting photocurrent is 855nA / cm 2 . The result is as Figure 5 Show.

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Abstract

The invention provides a dropping-coating preparation method for photoelectric-conversion composite coating films based on C60 / tetra-n-octylammonium bromide. The current density of a C60 / tetra-n-octylammonium bromide composite coating prepared from 30 mu L of solution containing 1.0 mM of C60 and 10 mM of tetra-n-octylammonium bromide is 1,300nA / cm, while the photocurrent density of a C60 coating prepared simply from 30 mu L of solution containing 1.0 mM of C60 is only 550 nA / cm, thus the photocurrent density of the former is shown to be 2.4 times that of the latter. The voltage response sensitivity of a photoelectric-conversion composite coating film based on C60 / tetra-n-octylammonium bromide is 9 nA / mV, while the voltage response sensitivity of a pure C60 coating is only 5 nA / mV, thus the former is shown to have higher photoelectric conversion performance and voltage response sensitivity than the latter and have good application prospects.

Description

technical field [0001] The invention relates to a C-based 60 The drop-coating preparation method of the photoelectric conversion composite coating film of / tetraoctyl ammonium bromide. Using tetraoctyl ammonium bromide with C 60 The invention relates to constructing a composite coating with photoelectric conversion properties on an indium tin oxide (ITO) conductive glass electrode by a drop coating method, and belongs to the technical field of fullerene photoelectric materials. Background technique [0002] C 60 It is a spherical three-dimensional cage molecule composed of 60 carbon atoms, and has a unique three-dimensional delocalized π-electron conjugated structure and spatial structure. C 60 With strong electron affinity, it is a good organic electron acceptor, so that C 60 And its derivatives play the important role of electron acceptor in the photoelectric energy conversion system. [0003] in C based 60 In the photoelectric energy conversion system, it is often n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
Inventor 高翔王德艳
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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