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US 10,941,340 B2Granted
Synthetic material for detecting ultraviolet radiation and/or X-radiation
AssigneeTurun Yliopisto
InventorsMika Lastusaari, Isabella Norrbo
Life of this patent
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Abstract
A material represented by the following formula (I) (M′)8M″6M″′6O24(X,S)2:M″″ formula (I). Also disclosed is an ultraviolet radiation sensing material, an X-radiation sensing material, a device and a method for determining the intensity of ultraviolet radiation.
Claims19
A material represented by the following formula (I)
- (M′)8M″6M′″6O24(X,S)2:M″″ formula (I)
- wherein M′ represents a combination of at least two monoatomic cations of different alkali metals selected from a group consisting of Li, Na, K, and Rb;
- M″ represents a trivalent monoatomic cation of an element selected from Group 13 of the IUPAC periodic table of the elements, or of a transition element selected from any of Groups 3-12 of the IUPAC periodic table of the elements, or any combination of such cations;
- M′″ represents a monoatomic cation of an element selected from Group 14 of the IUPAC periodic table of the elements, or any combination of such cations;
- X represents an anion of an element selected from Group 16 of the IUPAC periodic table of the elements, or any combination of such anions, or X represents an anion of an element selected from a group consisting of F, Cl, Br, and I, or any combination of such anions;
- and
- M″″ represents a dopant cation of an element selected from rare earth metals of the IUPAC periodic table of the elements, or from transition metals of the IUPAC periodic table of the elements, or any combination of such cations, or wherein M″″ is absent.
4 more elements
A method for determining the intensity of ultraviolet radiation and/or X-radiation, wherein the method comprises:
- a) providing a material represented by the following formula (I)
- (M′)8M″6M′″6O24(X,S)2:
- M″″ formula (I)
- wherein
- M′ represents a combination of at least two monoatomic cations of different alkali metals selected from a group consisting of Li, Na, K, and Rb;
- M″ represents a trivalent monoatomic cation of an element selected from Group 13 of the IUPAC periodic table of the elements, or of a transition element selected from any of Groups 3-12 of the IUPAC periodic table of the elements, or any combination of such cations;
- M′″ represents a monoatomic cation of an element selected from Group 14 of the IUPAC periodic table of the elements, or any combination of such cations;
- X represents an anion of an element selected from Group 16 of the IUPAC periodic table of the elements, or any combination of such anions, or X represents an anion of an element selected from a group consisting of F, Cl, Br, and I, or any combination of such anions;
- and
- M″″ represents a dopant cation of an element selected from rare earth metals of the IUPAC periodic table of the elements, or from transition metals of the IUPAC periodic table of the elements, or any combination of such cations, or wherein M″″ is absent,
- b) subjecting the material provided in step a) to ultraviolet radiation and/or X-radiation;
- c) determining a change in the color of the material caused by the ultraviolet radiation and/or the X-radiation;
- and
- d) comparing the color of the material with a reference indicating the correlation of the intensity of the ultraviolet radiation and/or X-radiation with the color of the material.
11 more elements
Dependencies are inferred from the claim text.