X-ray scintillators, metal halide hybrids, devices, and methods

Patent metadata

Field	Value
Publication number	US-12372670-B2
Application number	US-202418752958-A
Country	US
Kind code	B2
Filing date	Jun 25, 2024
Priority date	Mar 13, 2020
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

Methods of scintillation, scintillation devices, and metal halide hybrids that may be used as X-ray scintillators. The metal halide hybrids may include organic metal halide hybrids, inorganic metal halide hybrids, or organic-inorganic metal halide hybrids. The metal halide hybrids may have a 0D structure. The metal halide hybrids may be in the form of one or more discrete crystals.

First claim

We claim:

1. A method for X-ray scintillation, the method comprising:
irradiating a metal halide hybrid with high-energy radiation to convert the high-energy radiation to at least one of near ultraviolet light or visible light;
wherein the metal halide hybrid comprises an organic antimony halide comprising a crystal according to Formula (I)—
R 2 SbX 5   Formula (I),

wherein X is a halide, and
wherein R is an organic ammonium cation, wherein the organic ammonium cation has a structure according to formula (IIa) or formula (IIb)—

wherein each of R 1 -R 10 is independently selected from a substituted or unsubstituted C 1 -C 20 hydrocarbyl.

2. The method of claim 1 , wherein the organic ammonium cation is of Formula (IIb).

3. The method of claim 1 , wherein the organic ammonium cation is a bis(triarylphosphoranylidine)ammonium cation.

4. The method of claim 1 , wherein the bis(triarylphosphoranylidine)ammonium cation is bis(triphenylphosphoranylidene)ammonium cation.

5. The method of claim 1 , wherein X is Cl.

6. The method of claim 1 , wherein the metal halide hybrid has a 0D structure.

7. The method of claim 1 , wherein—
(i) the metal halide hybrid has a first PLQE measured within one week of the metal halide hybrid's creation,
(ii) a second PLQE measured after the metal halide hybrid is stored at ambient conditions for at least one year following the metal halide hybrid's creation, and
(iii) the second PLQE is no more than 3 percentage points less than the first PLQE.

8. The method of claim 1 , wherein the metal halide hybrid exhibits (i) a light yield of about 70,000 photons/MeV to about 90,000 photons/MeV, (ii) a detection limit of about 50 nGy/s to about 500 nGy/s, or (iii) a combination thereof.

9. The method of claim 1 , wherein the metal halide hybrid is in the form of one or more discrete crystals.

10. The method of claim 9 , wherein each of the one or more discrete crystals has a largest dimension of about 1 mm to about 10 mm.

11. The method of claim 1 , wherein the metal halide hybrid is dispersed in a matrix material.

12. The method of claim 11 , wherein the metal halide hybrid is in the form of a powder, and the matrix material comprises a polymer.

13. The method of claim 12 , wherein the polymer comprises polydimethylsiloxane.

14. The method of claim 11 , wherein the matrix material is in the form of a flexible film.

15. The method of claim 14 , wherein the film comprises a polymeric three-dimensional microstructured film.

16. The method of claim 1 , wherein the high-energy radiation comprises X-rays, gamma rays, or a combination thereof.

17. A device comprising:
an electronic substrate;
an imaging chip;
a fiber-optic face plate, wherein the imaging chip is arranged between the electronic substrate and the fiber-optic face plate; and
a scintillator screen comprising a metal halide hybrid, wherein the fiber-optic face plate is arranged between the imaging chip and the scintillator screen;
wherein the metal halide hybrid comprises an organic antimony halide comprising a crystal according to Formula (I)—
R 2 SbX 5   Formula (I),

wherein X is a halide, and
wherein R is an organic ammonium cation, wherein the organic ammonium cation has a structure according to formula (IIa) or formula (IIb)—

wherein each of R 1 -R 10 is independently selected from a substituted or unsubstituted C 1 -C 20 hydrocarbyl.

18. A scintillator screen comprising an organic antimony halide, wherein the organic antimony halide comprises a crystal according to Formula (I)—
R 2 SbX 5   Formula (I),

wherein X is a halide, and
wherein R is an organic ammonium cation, wherein the organic ammonium cation has a structure according to formula (IIa) or formula (IIb)—

wherein each of R 1 -R 10 is independently selected from a substituted or unsubstituted C 1 -C 20 hydrocarbyl.

Assignees

• Univ Florida State Res Found Inc

Inventors

• Ma Biwu
• Xu Liang-Jin
• He Qingquan

Classifications

• G01T1/2018

  Scintillation-photodiode combinations · CPC title

• G01T1/2002

  Optical details, e.g. reflecting or diffusing layers · CPC title

• C09K2211/188

  of other metals not provided for in one of the previous groups · CPC title

• G01T1/2023 Primary

  Selection of materials · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title