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Method for preparing nano-film based on infrared photothermal conversion and measuring light power

A nano-thin film and thermal conversion technology, which is used in photometry using electrical radiation detectors, metal selenide/telluride, binary selenium/tellurium compounds, etc. The problems of small space optical power and inconvenient continuous power supply have achieved the effects of low equipment requirements, single shape and short response time.

Pending Publication Date: 2021-03-09
TIANJIN CHENGJIAN UNIV
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Problems solved by technology

However, previous studies on the synthesis of Cu 2-x Se work can only obtain materials with a size of a few hundred nanometers or even larger
[0004] The current laser optical power test is carried out by means of photoelectricity, and it is inconvenient to continue the electrode during long-term field work.
In some complex or narrow spaces, the optical power meter cannot measure the precise laser power of the measured point, which makes the test extremely inconvenient. In some special cases, a small laser power test method is needed to accurately measure the laser power. Therefore, it is necessary Develop a portable, fast and efficient test, small and convenient, high-precision optical power test instrument to solve the problem of not being able to test the optical power in a small space and the problem of not being portable

Method used

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  • Method for preparing nano-film based on infrared photothermal conversion and measuring light power
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  • Method for preparing nano-film based on infrared photothermal conversion and measuring light power

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preparation example Construction

[0031] A method for preparing a nano-film based on infrared photothermal conversion, the specific steps are:

[0032] S1, Cu 2-x Preparation of Se:Bi Nanocrystalline Powder

[0033] With ethylene glycol as solvent, with Na 2 SeO 3 As the selenium source, take CuCl 2 2H 2 O is copper source, wherein the molar ratio of copper source and selenium source is 2:1, adjust pH value with NaOH, take Bi(NO 3 ) 3 ·5H 2 O is a bismuth source, adding PVP is a stabilizer, and stirs evenly;

[0034] The stirred mixture was transferred to a microwave system, and microwaved at 180°C to obtain Cu-containing 2-x Se:Bi nanocrystal solution, the solution is washed and dried to obtain Cu 2-x Se: Bi nanocrystalline powder;

[0035] S2, Cu 2-x Preparation of Se:Bi Nanocrystalline Thin Films

[0036] With water as solvent, with the Cu prepared in step S1 2-x Se:Bi nanocrystalline powder is a solute, which is dissolved under the action of ultrasonic waves. 2-x Se:Bi nanocrystalline particl...

specific Embodiment

[0048] 0.1343g of Na 2 SeO 3 , 0.2645g of CuCl 2 2H 2 O, 0.0388g of Bi(NO 3 ) 3 ·5H 2 O, the NaOH of 0.1690g, the PVP of 0.3121g and the ethylene glycol of 40ml join in the three-necked bottle of 100ml, the three-necked bottle that is filled with mixed solution is transferred in the microwave system and carries out magnetic stirring, 300 rev / mins of rotating speed, After 30 minutes, the magnetic stirring speed was adjusted to 100 rpm, and microwave reaction was carried out at 180°C for 15 minutes to obtain Cu-containing 2-x Se:Bi nanocrystal solution, the resulting solution was transferred to a dry and clean centrifuge tube and centrifuged at a speed of 10000 rpm for 10min, and the precipitate obtained by centrifugation was washed three times with deionized water and absolute ethanol, and then transferred to a petri dish at room temperature. Dry and collect the powder, which is Cu 2-x Se:Bi nanocrystalline powder.

[0049] Will get Cu 2-x Se:Bi nanocrystalline powder ...

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Abstract

The invention relates to a method for preparing a nano-film based on infrared photothermal conversion and measuring light power , which comprises the following steps: uniformly stirring ethylene glycol, Na2SeO3, CuCl2. 2H2O, Bi(NO3)3.5 H2O, NaOH and PVP, transferring into a microwave system, carrying out microwave reaction at 180 DEG C to obtain a solution, cleaning the solution, drying to obtainCu2-xSe:Bi nanocrystalline powder, and dissolving under the action of ultrasonic wave by using water as a solvent, and carrying out suction filtration through a filtering membrane to prepare the required Cu2xSe:Bi nanocrystalline film. The method for measuring the light power specifically comprises the steps that the Cu2xSe: Bi nanocrystalline thin film generates heat under infrared light irradiation, and the laser power is evaluated by analyzing the temperature of the thin film. The Cu2xSe: Bi nanocrystalline film provided by the invention has a strict high-precision heating and temperature control effect under laser irradiation, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of photothermal conversion and laser detection, in particular to a method for preparing a nanometer film based on infrared photothermal conversion and measuring photoelectric power. Background technique [0002] Transition metal chalcogenides have attracted extensive attention and research in recent years because of their special photothermal properties. Cu 2-x Se, as an important surface plasmon resonance semiconductor material, exhibits a high density of free charges due to the abundant appearance of Cu vacancies during the formation of nanoparticles, and has a good generation of noble-metal-like surface plasmons during photoexcitation. , is an important nanomaterial for infrared photothermal conversion; however, due to the appearance of a large number of vacancies, the instability of crystal form adjustment may occur during the temperature change. [0003] Preparation of Cu 2-x There are many methods f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04G01J1/42
CPCC01B19/007C01P2002/72C01P2004/03C01P2004/62C01P2004/64G01J1/42
Inventor 贾国治贺郴郴李灵侠
Owner TIANJIN CHENGJIAN UNIV
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