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Structural Transformation and Luminescence Switching of Hybrid Antimony Halides for Single-Component White Light and
Ruo-Yu Zhang1,2, Ni Dan2, Xiao-Ning Gao2
1College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
Inorganic Chemistry
|June 16, 2025
Summary
New antimony-based halide hybrids offer bright white light emission for single-component white light-emitting diodes (WLEDs). These materials also exhibit rapid, reversible structural transformations for advanced anticounterfeiting applications.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Photophysics
Background:
- Organic-inorganic metal halides (OIMHs) are explored for tunable luminescence and structural switching.
- Developing Sb-based halides for single-component white light-emitting diodes (WLEDs) and fast phase transitions remains a challenge.
Purpose of the Study:
- To synthesize novel Sb-based halide hybrids with white light emission.
- To investigate their potential for WLEDs and anticounterfeiting applications.
- To explore the relationship between structural transformations and luminescence switching.
Main Methods:
- Rapid synthesis of three Sb-based halide hybrids: (TPP-HBtrz)SbCl5, (TPP-Btrz)2Sb2Cl8, and (TPP-HBtrz)SbBr5.
- Characterization of their photoluminescence properties.
- Investigation of structural transformations induced by ethanol or HCl solutions.
Main Results:
- (TPP-HBtrz)SbCl5 demonstrated white light emission due to organic cation and self-trapped exciton (STE) emission from [SbCl5]2-.
- The WLED achieved CIE coordinates of (0.32, 0.34), a correlated color temperature (CCT) of 6130 K, and a color-rendering index (CRI) of 86.
- Fast structural transformations were observed upon stimulation with ethanol or HCl, enabling multilevel encryption.
Conclusions:
- Successfully developed Sb-based halide hybrids for single-component WLEDs.
- Demonstrated the potential of these materials for fast, reversible structural transformations for anticounterfeiting.
- Highlighted the importance of organic components in tuning the properties of OIMHs.
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