Method for measuring fluorescent decay in phosphors
OwnerWilliam A. Hollerman, John Miller +2inventors
InventorsWilliam A. Hollerman, John Miller, Tolga Karsili, Stephen W. Allison
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Abstract
Disclosed herein is a methodology which quickly provides for the analysis of multiple luminescence decays from individual phosphor samples. The disclosed method utilizes a Trust-Region method to provide non-physical solutions when the fitting application was not provided with bounds for the respective intensities and decay times. Results from Double Decay were found to be statistically similar to data analyzed in methodologies known in the art.
Claims11
A method for measuring fluorescent decay in a phosphor sample comprising:
- (a) providing a thermographic phosphor measuring device, comprising:
- a display;
- two or more exterior panels;
- a Peltier cooler;
- a phosphor sample holder;
- a thermocouple;
- a photomultiplier tube;
- a circuit board, comprising associated circuitry comprising functionality to provide power and control to said device;
- a light source;
- a filter chamber;
- at least two connectors;
- and
- a recording mechanism;
- (b) exposing the phosphor sample to the light source;
- (c) collecting data regarding the phosphor sample's excitation and luminosity;
- (d) recording the collected data;
- and
- (e) performing a Double Decay process.
A method for measuring fluorescent decay in a phosphor sample comprising:
- (a) providing a thermographic phosphor measuring device;
- (b) inserting the phosphor sample into the thermographic phosphor measuring device;
- (c) exposing the phosphor sample to a light source contained within an interior of the thermographic phosphor measuring device;
- (d) collecting data regarding the phosphor sample's excitation and luminosity by a recording mechanism that is connected to the thermographic phosphor measuring device by at least two connectors;
- (e) recording the collected excitation and luminosity data;
- and
- (f) performing a Double Decay process, comprising:
- i. inputting into a numeric computing platform initial guesses and bounds determined by a user to set one or more parameters for a plot;
- ii. input an input file, comprising data recorded by the recording mechanism;
- iii. filtering out any background noise from the recorded data;
- iv. inputting a fitting widow;
- v. fitting the recorded data;
- vi. inputting temperature data;
- and
- vii. calculating means and uncertainties.
Dependencies are inferred from the claim text.