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Cadmium-doped diphenylguanidine manganese bromide scintillator with high light yield and synthesis method of cadmium-doped diphenylguanidine manganese bromide scintillator

A technology of diphenylguanidine manganese bromine single crystal and synthesis method, which is applied in the field of inorganic semiconductor light-emitting materials, can solve the problems of unreported scintillators, and achieve the effects of simple preparation method, high light yield, and high radiation absorption coefficient

Active Publication Date: 2022-02-25
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, Xiaoting Liu et al. prepared C 26 h 28 N 6 MnBr 4 material (Adv.Optical Mater.2021, 2100862), which has excellent stress luminescence properties, but its possibility as a scintillator has not been reported

Method used

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  • Cadmium-doped diphenylguanidine manganese bromide scintillator with high light yield and synthesis method of cadmium-doped diphenylguanidine manganese bromide scintillator
  • Cadmium-doped diphenylguanidine manganese bromide scintillator with high light yield and synthesis method of cadmium-doped diphenylguanidine manganese bromide scintillator
  • Cadmium-doped diphenylguanidine manganese bromide scintillator with high light yield and synthesis method of cadmium-doped diphenylguanidine manganese bromide scintillator

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] According to the chemical formula C 26 Hide 28 N 6 Mnbr 4 : CD 2+ The chemical metrics ratio of each element, weigh 2 mmolc, respectively. 13 Hide 14 BRN 3 0.96mmol Mnbr 2 And 0.04 mmol CDO was added to 5 ml of 48% hydrobromic acid solution, and the oil bath was heated at 100 ° C, and the mixture was obtained well until the reaction was sufficiently dissolved. The mixture was cooled to room temperature and precipitated. The precipitated product was filtered and washed with 15 ml of isopropyl alcohol. The product was washed with isopropyl alcohol to dry 12h for 12 h and collected, and cadmium was obtained by 4% C. 26 Hide 28 N 6 Mnbr 4 : CD 2+ .

Embodiment 2

[0043] According to the chemical formula C 26 Hide 28 N 6 Mnbr 4 : CD 2+ The chemical metrics ratio of each element, weigh 2 mmolc, respectively. 13 Hide 14 BRN 3 , 0.86mmol Mnbr 2 And 0.14 mmol CDO was added to 5 ml of 48% aqueous hydrobromic acid solution, and the oil bath was heated at 100 ° C, and the mixture was obtained well until the reaction was sufficiently dissolved. The mixture was cooled to room temperature and precipitated. The precipitated product was filtered and washed with 15 ml of isopropyl alcohol. The product was washed with isopropyl alcohol to dry 12h at room temperature and collected, and the doped percentage of cadmium was 14%. 26 Hide 28 N 6 Mnbr 4 : CD 2+ .

Embodiment 3

[0045] According to the chemical formula C 26 Hide 28 N 6 Mnbr 4 : CD 2+ The chemical metrics ratio of each element, weigh 2 mmolc, respectively. 13 Hide 14 BRN 3 0.82mmol Mnbr 2 And 0.18 mmol CDO was added to a 5 mL of 48% hydrobromic acid aqueous solution, and the oil bath was heated at 100 ° C, and the mixture was obtained well until it was sufficiently dissolved. The mixture was cooled to room temperature and precipitated. The precipitated product was filtered and washed with 15 ml of isopropyl alcohol. The product was washed with isopropyl alcohol to dry 12h at room temperature and collected, and cadmium was obtained by 18% C. 26 Hide 28 N 6 Mnbr 4 : CD 2+ .

[0046] Figure 4 It is a schematic diagram of radiation luminous (RL) under X-ray excitation, and Figure 4 It can be seen that the same doping content, CD 2+ Effective effect of doping to radiation luminous (RL) strength ratio Zn 2+ Bi 3 + better.

[0047] Figure 5 It is a schematic diagram of a photonuminescent quant...

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Abstract

The invention discloses a cadmium-doped diphenylguanidine manganese bromide single-crystal scintillator with high light yield and a synthesis method of the cadmium-doped diphenylguanidine manganese bromide single-crystal scintillator. The method comprises the following steps of: adding C13H14BrN3, MnBr2 and CdO into a hydrobromic acid aqueous solution, carrying out oil bath heating, fully dissolving reactants to obtain a mixed solution, cooling the mixed solution to room temperature, precipitating a product, carrying out suction filtration on the precipitated product, washing the product with isopropanol, and finally carrying out vacuum drying on the product washed with isopropanol to obtain the C26H28N6MnBr4: Cd < 2 + > single crystal scintillator. The synthesis method disclosed by the invention is low in cost and good in repeatability, and the prepared C26H28N6MnBr4: Cd < 2 + > scintillator is a transparent green single crystal, has low ultraviolet absorption, excellent charge transfer characteristic, strong X-ray attenuation and thermal quenching resistance below a melting point, and has very high X-ray detection and imaging potential.

Description

Technical field [0001] The present invention belongs to the technical field of inorganic semiconductor luminescent materials, and it is related to a high-gloss-doped diphenylfrychromanganese bromide scintillator and a synthesis method thereof. Background technique [0002] X-ray detectors are widely used in industrial, medical and research. The implementation of the X-ray detector is roughly divided into direct and indirect. The former directly absorbs the incident X-rays, generating an electronic signal through a semiconductor or a chemical signal by a film. This method can directly convert X-rays into visible light without having to pass through other processes. Therefore, an X-ray detector having a wide linear response range, a rapid pulse rise time, a high energy resolution, and a spatial resolution, which is widely used in X-ray detection. However, the semiconductor-based X-ray detector faces a challenge of high cost and low efficiency. In addition, although the film is inex...

Claims

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Application Information

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IPC IPC(8): C07C279/18C07C277/08C09K11/61C30B7/14C30B29/54
CPCC07C279/18C07C277/08C09K11/615C30B7/14C30B29/54C07B2200/13
Inventor 李晓明仇双晨吴晔曾海波
Owner NANJING UNIV OF SCI & TECH
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