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Photoluminescence: Applications

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

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Related Experiment Video

Updated: Jan 10, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors

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Published on: November 15, 2016

Inorganic Ho-Based Metal Halide Scintillators with Narrow-Band Red Emission for X-ray Imaging.

Chao Xu¹, Jinbiao Pan¹, Ting Zhang²

¹State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China.

Inorganic Chemistry

|November 27, 2025

Summary

Researchers developed a novel red-emitting material, Cs2NaHoCl6, by modifying rare-earth halide perovskites. This breakthrough enhances red light emission and improves X-ray detection capabilities for advanced optoelectronic applications.

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Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

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Last Updated: Jan 10, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors

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Published on: November 15, 2016

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Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

Area of Science:

Materials Science
Solid-State Chemistry
Optoelectronics

Background:

Rare-earth halide perovskites show promise for optoelectronics.
Efficient narrow-band red emitters are crucial but underdeveloped.
This limits practical applications in displays and lighting.

Purpose of the Study:

Synthesize a novel red-emitting material with enhanced efficiency and purity.
Investigate the effects of Na+ substitution on Cs3HoCl6 perovskites.
Evaluate the material's performance in X-ray detection and imaging.

Main Methods:

Partial substitution of Cs+ with Na+ in Cs3HoCl6 crystals to form Cs2NaHoCl6.
Characterization of crystal structure and optical properties.
Testing of X-ray detection and imaging performance.

Main Results:

Achieved an order-of-magnitude enhancement in Ho3+ red emission at 660 nm.
Improved color purity with a narrow full width at half maximum (fwhm) of 19.25 nm.
Demonstrated superior X-ray detection capabilities with a low detection limit and stable performance.

Conclusions:

Na+ incorporation in Cs3HoCl6 suppresses non-radiative transitions, boosting red emission.
Cs2NaHoCl6 is a highly efficient narrow-band red emitter suitable for optoelectronics.
The material shows significant potential for advanced X-ray detection and imaging applications.