Manufacturing method of scintillator material and scintillator material

Patent metadata

Field	Value
Publication number	US-12399288-B2
Application number	US-202318106789-A
Country	US
Kind code	B2
Filing date	Feb 7, 2023
Priority date	Feb 16, 2022
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

A method of manufacturing a scintillator material includes providing a substrate made of a quartz glass and having a recess formed therein; filling the recess with a raw material powder obtained by mixing an iodide raw material and SiO 2 fine particles; after filling the recess, disposing a lid on the substrate to cover the recess; and after disposing the lid, heating the substrate, thereby forming a nanocomposite layer in which an iodide phosphor is introduced into a cristobalite structure.

First claim

What is claimed is:

1. A method of manufacturing a scintillator material, the method comprising:
providing a substrate made of a quartz glass and having a recess formed therein;
filling the recess with a raw material powder obtained by mixing an iodide raw material and SiO 2 fine particles;
after filling the recess, disposing a lid on the substrate to cover the recess; and
after disposing the lid, heating the substrate, thereby forming a nanocomposite layer in which an iodide phosphor is introduced into a cristobalite structure.

2. The method according to claim 1 , wherein an average particle diameter (D50) of the SiO 2 fine particles falls in a range of 0.1 μm or more and 10 μm or less.

3. The method according to claim 1 , wherein a content of the SiO 2 fine particles is 10 mol % or more and 600 mol % or less with respect to the iodide raw material.

4. The method according to claim 1 , wherein in the filling the recess, alkali halide is added into the recess.

5. The method according to claim 1 , wherein a depth of the recess falls in a range of 0.5 mm or more and 3.0 mm or less.

6. The method according to claim 1 , wherein a thickness of the nanocomposite layer is 0.1 mm or more.

7. A scintillator material excited by an irradiation to emit visible light, the scintillator material comprising:
a substrate made of a quartz glass and having a recess formed therein; and
a nanocomposite layer in which an iodide phosphor is introduced into a cristobalite structure, in the recess,
wherein a thickness of the nanocomposite layer is 0.1 mm or more.

Assignees

• Koito Mfg Co Ltd

Inventors

• Daicho Hisayoshi
• Iwasaki Takeshi
• Nakamura Atsushi

Classifications

• C03C2201/02

  Pure silica glass, e.g. pure fused quartz · CPC title

• C03C2217/213

  SiO2 · CPC title

• C03C2217/284

  Halides · CPC title

• C03C2217/29

  Mixtures · CPC title

• C03C2217/42

  consisting of particles only · CPC title