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US 2022/0187480 A1Published application
Low-temperature perovskite scintillators and devices with low temperature perovskite scintillators
OwnerMichael Salibainventor
Life of this patent
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Abstract
Disclosed embodiments include perovskite scintillators configured to be operated at a low temperature, detectors with perovskite scintillators configured to be operated at a low temperature, scanners with perovskite scintillators configured to be operated at a low temperature, methods of cooling a perovskite scintillator to a low temperature, and methods of configuring a perovskite scintillator to be operated at a low temperature.
Claims23
An apparatus, comprising:
- a perovskite scintillator configured to be irradiated by ionizing radiation at an operating temperature below 277 K to yield a light output with:
- (i) a maximum fast component amplitude, A1, that is at least two times greater than a maximum slow component amplitude, A2,
- (ii) an afterglow, y0, that is at least two times less than the amplitude of the maximum slow component amplitude, A2, and
- (iii) a fast decay time constant, t1, and a slow decay time constant, t2, that are each less than 10 nanoseconds.
1 more element
A detector comprising:
- a source of ionizing radiation;
- at least one perovskite scintillator configured to be irradiated by ionizing radiation at a first frequency from the source of ionizing radiation and emit photons responsive thereto at a second frequency that is lower than the first frequency, the perovskite scintillator configured to be operated at an operating temperature below 277K;
- a cooling system configured to cool the perovskite scintillator to the operating temperature;
- and
- a photodetector configured to detect photons emitted by the perovskite scintillator,
- wherein, the perovskite scintillator is configured to yield a light output in response to irradiation by the ionizing radiation that has:
- (i) a maximum fast component amplitude, A1, that is at least two times greater than a maximum slow component amplitude, A2,
- (ii) an afterglow, y0, that is at least two times less than the amplitude of the maximum slow component amplitude, A2, and
- (iii) a fast decay time constant, t1, and a slow decay time constant, t2, that are each less than 10 nanoseconds.
6 more elements
A scanner comprising:
- a perovskite scintillator configured to be irradiated by pairs of ionizing gamma photons at a first frequency and emit photons responsive thereto at a second frequency that is lower than the first frequency, the perovskite scintillator being further configured to be operated at an operating temperature below 277 K;
- a cooling system configured to cool the perovskite scintillator to the operating temperature;
- and
- a photodetector configured to detect photons emitted by the perovskite scintillator,
- wherein, the perovskite scintillator is configured to yield a light output in response to irradiation by the ionizing radiation that has:
- (i) a maximum fast component amplitude, A1, that is at least two times greater than a maximum slow component amplitude, A2,
- (ii) an afterglow, y0, that is at least two times less than the amplitude of the maximum slow component amplitude, A2, and
- (iii) a fast decay time constant, t1, and a slow decay time constant, t2, that are each less than 10 nanoseconds.
5 more elements
Dependencies are inferred from the claim text.