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Updated: Jan 30, 2026
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Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
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Optically Stimulated Ultraviolet-C Luminescence for Solar Blind Imaging
Zhiting Jiang1, Yanyan Gao1, Qiuping Ding1
1Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding, China.
Small (Weinheim an Der Bergstrasse, Germany)
|January 29, 2026
Summary
This study introduces a novel double perovskite phosphor, Cs2NaYF6:Pr3+, that emits ultraviolet-C (UVC) optically stimulated luminescence (OSL). This breakthrough overcomes ambient light interference, enabling new applications in radiation detection and anti-counterfeiting.
Area of Science:
- Materials Science
- Solid-State Physics
- Luminescence
Background:
- Optically stimulated luminescence (OSL) materials convert trapped charges to light, useful for radiation detection and anti-counterfeiting.
- Existing OSL materials emit in visible/near-infrared, limiting applications due to ambient light overlap.
- Development of OSL materials emitting in the ultraviolet-C (UVC) range is needed.
Purpose of the Study:
- To report a novel double perovskite phosphor, Cs2NaYF6:Pr3+, exhibiting ultraviolet-C (UVC) optically stimulated luminescence (OSL).
- To investigate the mechanism of UVC OSL generation and its dependence on stimulation wavelength.
- To demonstrate the potential application of this UVC OSL material in tracking and marking.
Main Methods:
- Synthesis and characterization of Cs2NaYF6:Pr3+ double perovskite phosphor.
- X-ray irradiation to induce charge carrier trapping.
- Wavelength-dependent optically stimulated luminescence measurements to analyze UVC emission.
- Investigation of trap-clearing capability and luminescence persistence under light/heat stimulation.
Main Results:
- Cs2NaYF6:Pr3+ exhibits strong and persistent UVC OSL emission upon X-ray irradiation.
- The UVC OSL signal is generated by trapped charge carriers stimulated by light over a broad wavelength range.
- The study elucidates the influence of excitation wavelength on UVC OSL intensity and characteristics.
- Demonstrated potential for tracking and marking applications in bright environments, like sunlight.
Conclusions:
- Cs2NaYF6:Pr3+ is a promising material for UVC OSL applications, overcoming limitations of visible/NIR OSL.
- Understanding the wavelength dependence of UVC OSL is crucial for material design and application development.
- This work provides a foundation for exploring new UVC OSL materials and expanding their technological utility.
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