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Thermoelectric conversion material and thermoelectric conversion element

A thermoelectric conversion material and thermoelectric conversion technology, applied in the fields of thermoelectric conversion materials and thermoelectric conversion elements, can solve the problem that the thermoelectric conversion efficiency of thermoelectric conversion materials cannot be said to be sufficient, and achieve the effects of excellent thermoelectric conversion performance and excellent thermoelectric potential.

Inactive Publication Date: 2014-05-28
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the thermoelectric conversion efficiency of these thermoelectric conversion materials cannot be said to be sufficient, and the development of organic thermoelectric conversion materials with higher thermoelectric conversion efficiency is desired.

Method used

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  • Thermoelectric conversion material and thermoelectric conversion element
  • Thermoelectric conversion material and thermoelectric conversion element
  • Thermoelectric conversion material and thermoelectric conversion element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0255] Then, 10 mg of the conductive polymer 1 shown below (manufactured by Aldrich, weight average molecular weight = 87000), 2 mg of the above-mentioned thermal activation auxiliary agent 401, and 4 mg of CNT (ASP-100F, manufactured by Hanwha Nanotech Co., Ltd.) were added to 5 ml of o-dichlorobenzene , using an ultrasonic water bath to disperse for 70 minutes. Thereafter, 4 mg of the following dopant 107 was added and fully dissolved to prepare a mixed liquid. The mixed liquid was coated on a glass substrate, and the coated product was heated at 120° C. for 15 minutes to distill off the solvent, and then dried under vacuum at room temperature for 10 hours to produce a thermoelectric conversion film with a film thickness of 2.5 μm. Thereafter, the film was irradiated with ultraviolet light (light intensity: 1.06 J / cm 2 ) for doping with conductive polymers. The presence or absence of doping was confirmed by the following method.

[0256] For the obtained film for thermoel...

Embodiment 2～29、 comparative example 1～9

[0271] Examples 2 to 29 and Comparative Example 1 were produced in the same manner as in Example 1, except that the type and presence or absence of the conductive polymer, thermal excitation assistant, and dopant were changed as shown in Table 1 or Table 2. ~9 films for thermoelectric conversion were evaluated. The results are listed in Table 1 and Table 2.

[0272]

[0273]

[0274] Tables 1 and 2 clearly show that the energy level of LUMO of the thermal activation auxiliary agent and the energy level of HOMO of the conductive polymer satisfy the above formula (I) in Examples 1 to 29, all of which have excellent thermoelectric properties. On the other hand, in Comparative Examples 2 to 4 that did not satisfy the above formula (I) and Comparative Examples 1 and 6 to 9 that did not use a thermal activation auxiliary agent, the thermoelectric characteristics were significantly lowered compared with the Examples.

Embodiment 30

[0276] On a glass substrate having an ITO electrode (thickness: 10 nm) as the first electrode, the mixed solution prepared in Example 1 was coated, and the coated product was heated at 95° C. for 20 minutes to distill off the solvent, and the resulting material was heated at room temperature It was dried under vacuum for 4 hours to form a first thermoelectric conversion layer having a film thickness of 2.9 μm. Thereafter, the layer was irradiated with ultraviolet rays (light quantity: 1.06 J / cm 2 ) for doping with conductive polymers.

[0277] Next, on the top of the first thermoelectric conversion layer, the mixed solution prepared in Example 7 was coated in the same manner, and the solvent was distilled off by heating at 95° C. for 20 minutes, and the obtained material was dried under vacuum at room temperature for 4 hours to form the first thermoelectric conversion layer. The second thermoelectric conversion layer. Thereafter, the layer was irradiated with ultraviolet ray...

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Abstract

A thermoelectric conversion material which contains a conductive polymer and a thermal excitation assisting agent is provided. In the thermoelectric conversion material of the present invention, the thermal excitation assisting agent is a compound that does not form a doping level in the conductive polymer, and the energy level of the LUMO (lowest unoccupied molecular orbital) of the thermal excitation assisting agent and the energy level of the HOMO (highest occupied molecular orbital) of the conductive polymer satisfy the following numerical formula (I): Numerical formula (I) 0.1eV <= | HOMO of the conductive polymer | - | LUMO of the thermal excitation assisting agent | <= 1.9eV (In numerical formula (I), | HOMO of the conductive polymer | and | LUMO of the thermal excitation assisting agent | express the absolute value of the energy level of the HOMO of the conductive polymer and the absolute value of the energy level of the LUMO of the thermal excitation assisting agent, respectively.)

Description

technical field [0001] The present invention relates to a thermoelectric conversion material and a thermoelectric conversion element using the material. Background technique [0002] A thermoelectric conversion material capable of mutual conversion of thermal energy and electrical energy is used in thermoelectric conversion elements such as thermoelectric generation elements or Peltier elements. In thermoelectric power generation using thermoelectric conversion materials or thermoelectric conversion elements, thermal energy can be directly converted into electricity without moving parts, so thermoelectric power generation is used for power supplies for wristwatches that operate by body temperature, power supplies for remote areas, power supplies for space, etc. [0003] Good thermoelectric conversion efficiency is required in thermoelectric conversion materials, and inorganic materials are mainly put into practical use at present. However, this inorganic material is expensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/24C08G61/12C08G73/02
CPCC08G2261/1412C08G2261/3221C08K3/04H01L35/24C08G61/123C08G2261/3229C08K7/24C08G61/124C08G2261/3223C08G61/126C08G2261/3243H01L35/32C08G2261/55C08G2261/3422C08G2261/3246C08G2261/3142C08K3/041H10N10/856H10N10/17C08L65/00
Inventor 西尾亮青合利明林直之
Owner FUJIFILM CORP
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