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An organic composite thermoelectric film and a preparation method thereof

A kind of thermoelectric thin film, organic technology, applied in the manufacture/processing of thermoelectric devices, thermoelectric device junction lead-out materials, etc., can solve the problems of high thermal conductivity, difficult processing, expensive and other problems of inorganic thermoelectric thin films, and achieve excellent air stability Good properties and thermal stability, low cost, simple and easy preparation method

Active Publication Date: 2019-01-18
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide an organic composite thermoelectric film and its preparation method, aiming at solving the problems of high thermal conductivity, difficult processing, toxicity and high price of the existing inorganic thermoelectric film.

Method used

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  • An organic composite thermoelectric film and a preparation method thereof
  • An organic composite thermoelectric film and a preparation method thereof
  • An organic composite thermoelectric film and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Synthesis of polymers NDI-4, NDI-6 and NDI-10:

[0054] NDI-4: In a 50ml two-necked flask, sequentially add monomer I (3g, 1.12mmol), monomer II (1.9275g, 1.12mmol), N,N-dimethylformamide (DMF, 25ml) under nitrogen Under the protection of the atmosphere, the temperature is controlled at 150°C for 72 hours, and the reaction formula is as follows

[0055]

[0056] NDI-6: In a 50ml two-necked flask, add monomer Ⅰ (1g, 0.37mmol), monomer Ⅱ (0.4299g, 0.37mmol), N,N-dimethylformamide (DMF, 20ml) in nitrogen Under the protection of atmosphere, the temperature was controlled at 150°C for 72 hours, and the reaction formula was as follows:

[0057]

[0058] NDI-10: In a 50ml two-necked flask, add monomer Ⅰ (0.8024g, 0.30mmol), monomer Ⅱ (0.2633g, 0.30mmol), N,N-dimethylformamide (DMF, 25ml) in sequence Under the protection of nitrogen atmosphere, the temperature was controlled at 150°C for 72 hours. The reaction formula is as follows:

[0059]

[0060] After the react...

Embodiment 2

[0062] Preparation of NDI / SWCNT organic composite thermoelectric thin film:

[0063] Polymers NDI-4, NDI-6 and NDI-10 obtained in Example 1 were dissolved in chlorobenzene at a concentration of 15 mg / ml and uniformly mixed with single-walled carbon nanotubes (SWCNT), and the corresponding solution was mixed with a dropper. Drop by drop onto a glass sheet of 15mm*15mm, after the solvent volatilizes, the dense NDI-4 / SWCNT organic composite thermoelectric film, NDI-6 / SWCNT organic composite thermoelectric film and NDI-10 / SWCNT organic composite thermoelectric thin film.

Embodiment 3

[0065] Characterization and thermoelectric performance of organic thermoelectric materials NDI-4, NDI-6 and NDI-10, NDI-4 / SWCNT organic composite thermoelectric thin film, NDI-6 / SWCNT organic composite thermoelectric thin film and NDI-10 / SWCNT organic composite thermoelectric thin film test:

[0066] 1. The polymer functional groups of polymers NDI-4, NDI-6 and NDI-10 are tested by a Thermo Scientific Nicolet 6700 Fourier transform infrared spectrometer, and the measured Fourier transform infrared spectrogram is as follows figure 1 shown. The main absorption peaks of the three polymers are as follows: Absorption in the range bands from stretching vibrations of unsaturated C–H bonds. In the spectra of NDI-4, NDI-6 and NDI-10, 2926cm -1 、1706cm -1 、1658cm -1 and 1337cm -1 The bands at are attributed to the C-H, C=C, C=O and C-N stretching vibration modes, while the 1456cm -1 The frequency bands are attributed to C-H bending vibrations. The main absorption peak character...

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Abstract

The invention discloses an organic composite thermoelectric film and a preparation method thereof, wherein the organic thermoelectric thin film comprises an organic thermoelectric material having thechemical formula (shown in the description), wherein n is 2, 3 or 5, and m is a natural number between 40 and 70; The organic thermoelectric material has high Seebeck coefficient and thermoelectric performance, and also has high carrier mobility, which makes the organic composite thermoelectric film prepared by the invention have excellent air stability and thermal stability; The preparation method provided by the invention is simple, easy to realize and low in cost.

Description

technical field [0001] The invention relates to the field of thermoelectric materials, in particular to an organic composite thermoelectric thin film and a preparation method thereof. Background technique [0002] Economic and social development is inseparable from the continuous supply of energy. Under the international background of the increasing shortage of fossil energy such as oil and coal, and the continuous emergence of energy crises and environmental pollution, it has become extremely urgent to obtain new clean energy. Thermoelectric materials, also known as thermoelectric materials, are semiconductor functional materials that use the movement of carriers inside solids to realize mutual conversion between thermal energy and electrical energy. Etc. [0003] The performance of thermoelectric materials is determined by the thermoelectric figure of merit ZT=S 2 σT / κ, where S is the Seebeck coefficient of the material, σ is the electrical conductivity, T is the thermod...

Claims

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Application Information

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IPC IPC(8): H01L35/34H01L35/24C08G73/10
CPCC08G73/1007C08G73/1082H10N10/856H10N10/01
Inventor 潘成军牛瑞雪王雷
Owner SHENZHEN UNIV
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