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Some Methods of Luminescence Efficiency Measurements
Alfred Bril1, A Willy de Jager-Veenis1
1Philips Research Laboratories, Eindhoven, The Netherlands.
Summary
This study details methods for measuring radiant and quantum efficiency under various excitations, providing data for standard luminescent materials. These techniques are crucial for understanding material performance in diverse applications.
Area of Science:
- Photochemistry and Photophysics
- Materials Science
- Spectroscopy
Background:
- Luminescent materials are critical components in various technologies, including lighting, displays, and detectors.
- Accurate characterization of luminescent materials requires precise efficiency measurements.
- Understanding the relationship between excitation source and material response is essential.
Purpose of the Study:
- To describe methodologies for absolute and relative radiant and quantum efficiency measurements.
- To cover a range of excitation sources, including ultraviolet, visible, cathode-ray, and x-ray.
- To provide empirical data for selected standard luminescent materials.
Main Methods:
- Detailed procedures for absolute efficiency measurements.
- Techniques for relative efficiency measurements.
- Application of methods across different excitation types (UV, visible, CR, X-ray).
Main Results:
- Presentation of measurement data for standard luminescent materials.
- Demonstration of the described methods' applicability.
- Comparison of efficiency values under different excitation conditions.
Conclusions:
- The described methods provide a robust framework for evaluating luminescent material efficiency.
- The provided data serves as a benchmark for material characterization.
- Accurate efficiency measurements are vital for optimizing luminescent device performance.
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