High-resolution scintillator film, preparation method, preparation equipment and application

A high-resolution, scintillator technology, applied in the field of high-resolution X-ray imaging, can solve the problems of low radiation luminous intensity and uneven scintillator film, so as to improve the resolution, increase the radiation luminous intensity, and improve the uniformity of texture Effect

Pending Publication Date: 2021-12-28
INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above analysis, the present invention aims to propose a high-resolution scintillator thin film, preparation method, preparation equipment and application to solve defects such as uneven scintillator thin film and low radiation luminous intensity in the existing scintillator film forming technology

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  • High-resolution scintillator film, preparation method, preparation equipment and application
  • High-resolution scintillator film, preparation method, preparation equipment and application
  • High-resolution scintillator film, preparation method, preparation equipment and application

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preparation example Construction

[0057] In view of the above-mentioned technical problems, the present invention proposes a method for preparing a high-resolution scintillator thin film, comprising the following steps:

[0058] Step 1. Prepare scintillator dispersion system.

[0059] In an embodiment of the present invention, the scintillator is a perovskite scintillator, including: CsPbBr 3 , CsPbBr 3 +PPO (diphenyloxazole), CsPbBr 3 : Ce 3+ , the scintillator concentration in the scintillator dispersion system is positively correlated with the thickness of the scintillator layer.

[0060] In the embodiment of the present invention, CsPbBr 3 The preparation method comprises the following steps:

[0061] Step 1: Prepare a precursor solution using octadecene, cesium carbonate, and oleic acid.

[0062] The second step: using octadecene, oleic acid, oleylamine and lead bromide to prepare a lead ion solution.

[0063] The third step: adding the precursor solution to the above-mentioned lead ion solution to...

Embodiment 1

[0086] Preparation of CsPbBr 3 Scintillator thin film, its specific preparation steps are as follows:

[0087] Step 1: first use absolute ethanol and pure water to rinse the upper bottle 3 and the volumetric flask 6 of suction filtration, select the volumetric flask 6 with a sand core diameter of 20mm, rinse it and put it in a 70-degree oven to dry the instrument, before film making , at first ensure that there is no moisture and ethanol in the suction filter upper bottle 3 and the volumetric flask 6.

[0088] Step 2: Weigh 500 mg of polystyrene, dissolve it in 10 ml of toluene, and prepare a 50 mg / ml polystyrene toluene solution.

[0089] Step 3: Rinse the upper bottle 3 of suction filtration with toluene for three times, and place a smooth, non-scratched polyvinylidene fluoride membrane 5 with a size of 25mm×25mm and a pore size of 200nm on the upper suction filtration bottle 3 and volumetric flask 6 In between, clamp the upper suction filtration bottle 3 and the volumetric ...

Embodiment 2

[0095] Preparation of CsPbBr 3 +PPO scintillator film, the specific preparation steps are as follows:

[0096] Step 1: first use absolute ethanol and pure water to rinse the upper bottle 3 and the volumetric flask 6 of suction filtration, select the volumetric flask 6 with a sand core diameter of 20mm, rinse it and put it in a 70-degree oven to dry the instrument, before film making , at first ensure that there is no moisture and ethanol in the suction filter upper bottle 3 and the volumetric flask 6.

[0097] Step 2: Weigh 500 mg of polystyrene and 700 mg of PPO respectively, dissolve them in 10 ml of toluene respectively, and configure 50 mg / ml polystyrene toluene solution and 70 mg / ml PPO toluene solution.

[0098] Step 3: Rinse the upper bottle 3 of suction filtration with toluene for three times, and place a smooth, non-scratched polyvinylidene fluoride membrane 5 with a size of 25mm×25mm and a pore size of 200nm on the upper suction filtration bottle 3 and volumetric fl...

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Abstract

The invention relates to a high-resolution scintillator film as well as a preparation method and preparation equipment thereof, belongs to the field of high-resolution X-ray imaging, and solves the technical problems of non-uniformity, low radiation luminous intensity and the like of the scintillator film in the existing scintillator film forming technology. The high-resolution scintillator film comprises a protective layer and a scintillator layer. According to the technical scheme provided by the invention, the texture uniformity of the scintillator film is improved, the thickness of the scintillator film is reduced, and the transparency of the scintillator film is improved, so that the resolution of the scintillator film is improved.

Description

technical field [0001] The invention belongs to the field of high-resolution X-ray imaging, and in particular relates to a high-resolution scintillator film, a preparation method, preparation equipment and application. Background technique [0002] X-rays have strong penetrating ability and are often used in medical diagnosis, damage detection and other fields. Scintillators are a class of materials that can convert high-energy X-rays into visible light, and according to the energy of X-rays, convert high-energy X-rays into visible light with corresponding brightness. Afterwards, the corresponding image is obtained through the camera, and combined with image analysis, the internal information of the detected object can be obtained. [0003] In actual use, the scintillator material is usually made into a scintillator thin film. In the prior art, the scintillator thin film is produced through a dispersion system in which the scintillator is uniformly dispersed, mainly includi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66C09K11/06C09K11/02G01T1/20G01T1/29
CPCC09K11/665C09K11/772C09K11/06C09K11/025G01T1/20G01T1/2928C09K2211/1033
Inventor 谷战军吴晓辰董兴华
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
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