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Updated: Jun 17, 2026
08:57
A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
Published on: March 9, 2017
Chromium ion pair luminescence with controllable coupling strength
Xuewan Lin1, Long Chen1, Jiyou Zhong1,2
1School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China. jyzhong2016@gdut.edu.cn.
Chemical Communications (Cambridge, England)
|June 16, 2026
Summary
Developing long-wavelength near-infrared phosphors with high photoluminescence quantum yield (PLQY) is crucial for smart spectroscopy. This study controls chromium ion pair coupling in novel solid-solutions to tune luminescence performance.
Area of Science:
- Materials Science
- Solid-state Chemistry
- Luminescence
Background:
- Long-wavelength near-infrared (NIR) phosphors are essential for advanced spectroscopy.
- Chromium (Cr3+)-Chromium (Cr3+) ion pair luminescence offers a pathway to high photoluminescence quantum yield (PLQY) NIR emission.
- Controlling ion-pair coupling is key to optimizing phosphor performance.
Purpose of the Study:
- To investigate controllable Cr3+-Cr3+ ion pair coupling in K2Zr1-δTiδAl(PO4)3:Cr3+ solid-solutions.
- To systematically study the impact of coupling strength on luminescence properties.
- To develop novel long-wavelength NIR phosphors for smart spectroscopy.
Main Methods:
- Synthesis of K2Zr1-δTiδAl(PO4)3:Cr3+ solid-solutions with varying Ti content (0 ≤ δ ≤ 1).
- Characterization of crystal structure and phase purity.
- Photoluminescence spectroscopy to evaluate emission spectra, lifetime, and quantum yield.
Main Results:
- Achieved controllable Cr3+-Cr3+ ion pair coupling by tuning the Ti content (δ).
- Demonstrated a correlation between ion pair coupling strength and luminescence performance.
- Observed tunable long-wavelength NIR emission with high PLQY.
Conclusions:
- Controllable Cr3+-Cr3+ ion pair coupling in K2Zr1-δTiδAl(PO4)3:Cr3+ is a viable strategy for developing high-performance NIR phosphors.
- The findings provide a foundation for designing phosphors tailored for smart spectroscopy applications.
- This work highlights the importance of ion-pair interactions in tuning luminescence properties.
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