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Self-supporting flexible optical power intensity testing device and preparation method thereof

A technology for strength testing and testing devices, which is applied in the direction of using electric radiation detectors for photometry, etc., can solve problems such as self-supporting difficulties, difficult substrates, separation, etc., and achieve the effects of convenient application, strong durability, and broad application prospects

Pending Publication Date: 2022-03-18
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the thermoelectric devices and materials that have been applied are mainly concentrated on inorganic high-temperature thermoelectric materials. Traditional inorganic thermoelectric materials have strong rigidity and need to be reduced to nanometer size and rely on flexible substrates to achieve flexibility. Organic thermoelectric materials are more flexible, but they also have difficulties in self-supporting. , the problem of being difficult to separate from the substrate

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  • Self-supporting flexible optical power intensity testing device and preparation method thereof
  • Self-supporting flexible optical power intensity testing device and preparation method thereof
  • Self-supporting flexible optical power intensity testing device and preparation method thereof

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preparation example Construction

[0045] A preparation method of a self-supporting flexible optical power intensity testing device comprises the following steps.

[0046] (1) ultrasonically dispersing the p-type inorganic material in an appropriate solvent to form a uniform dispersion, wherein the mass ratio of the p-type inorganic material to the solvent is 1 to 100:1000;

[0047] (2) Add an organic support material to the p-type inorganic material dispersion obtained in step (1), stir magnetically at 50-100°C for 1-5 hours to obtain a uniform dispersion, and suction-filter or drop-cast the dispersion on a substrate covered with aluminum foil On the surface, vacuum drying at 60-90°C, multi-layer drop-casting can reach a suitable thickness by drop-casting method, and p-type flexible thermoelectric film can be obtained;

[0048] (3) dissolving the n-type dopant in a suitable solvent, drop-casting it on the film in step (2), removing the solvent from the filter membrane or removing the membrane after vacuum dryi...

Embodiment 1

[0054] (1) Ultrasonic disperse single-walled carbon nanotubes (SWCNT) in deionized water for 1 h, the concentration of the dispersion is 0.1%, add PEDOT:PSS aqueous dispersion, SWCNT:PEDOT:PSS=6:4, magnetically stir at 50°C After 1 hour to obtain a uniform dispersion, filter the dispersion with an acetic acid filter membrane, dissolve the filter membrane in acetone, and then dry it in vacuum at 80°C to obtain a p-type flexible thermoelectric film with a film thickness of 35 μm;

[0055] (2) Ultrasonic disperse SWCNT in N,N-dimethylformamide for 1 h, the concentration of the dispersion is 0.1%, add polyvinylidene fluoride (PVDF), SWCNT:PVDF=2:8, stir magnetically at 50°C for 3 h Obtain a uniform dispersion, drop-cast the dispersion on a substrate covered with aluminum foil, dry it in vacuum at 80°C, multi-layer drop-casting reaches a suitable thickness, add PEI to it for n-type doping, PEI is in the n-type thermoelectric film The content is 16%, and the film thickness is 28μm; ...

Embodiment 2-4

[0061] The mass ratios of SWCNT and PEDOT:PSS of the p-type thermoelectric thin film were changed to 2:8, 4:6 and 8:2 respectively, and other conditions were consistent with Example 1. The measurement results show that the Seebeck coefficients of the prepared p-type thermoelectric thin films fluctuate around 17μV / K, and the self-supporting flexible optical power intensity test device can produce different open circuit voltages under different intensity light sources.

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Abstract

The invention relates to a self-supporting flexible optical power intensity testing device and a preparation method thereof, and belongs to the field of photosensitive thermoelectric devices. The invention relates to a self-supporting flexible optical power intensity testing device, which is formed by superposing a plurality of groups of p-n pairs, and every two groups of p-n pairs are partially isolated by an insulating material, each group of p-n pairs consists of a p-type flexible thermoelectric film, an n-type flexible thermoelectric film and an insulating film for partially separating the p-type flexible thermoelectric film from the n-type flexible thermoelectric film, and the p-type flexible thermoelectric film is formed by compounding an organic support material and a p-type inorganic material; the n-type flexible thermoelectric thin film is a p-type flexible thermoelectric thin film doped with an n-type dopant in an anion mode. Due to excellent self-supporting and flexibility, the device can be applied to various curved surface application scenes, and due to excellent light absorption and photothermal conversion characteristics of inorganic materials in the thermoelectric thin films forming the device.

Description

technical field [0001] The invention relates to a self-supporting flexible optical power intensity testing device and a preparation method thereof, belonging to the field of photosensitive thermoelectric devices. Background technique [0002] Optical power meter is an important measuring instrument used in optical, chemical and physical research. However, most of the current commercial optical power intensity meters use graphite sheets made by special processes as light absorption and detection elements. easily damaged. [0003] Aiming at the problems of poor flexibility, high brittleness and poor durability of current light intensity meters, the present invention provides a self-supporting flexible optical power intensity testing device and a preparation method thereof by using thermoelectric technology. Thermoelectric thermoelectric technology is a new technology that uses the Seebeck effect of materials to convert thermal energy into electrical energy under the conditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/42
CPCG01J1/42
Inventor 张宇昂唐炳涛张淑芬
Owner DALIAN UNIV OF TECH