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Stress and Temperature Dual-Mode Sensing Based on Sb3+-Doped Cs2ZrCl6
Xiangxiang Chen1, Tong Zhang2, Wenda Sun1
1Institute of Photoelectronic Thin Film Devices and Technology, Tianjin Key Laboratory of Efficient Utilization of Solar Energy, Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, State Key Laboratory of Photovoltaic Materials and Cells, Nankai University, Tianjin300350, China.
Researchers developed a lead-free perovskite material combining mechanoluminescence (ML) and thermochromic properties for advanced sensing. This novel material enables colorimetric pressure sensing and thermally activated emission switching.
Area of Science:
- Materials Science
- Solid-State Physics
- Chemistry
Background:
- Integrating mechanoluminescence (ML) and thermochromic properties offers potential for multifunctional materials in flexible electronics and sensing.
- Inorganic halide perovskites are promising due to their structural flexibility and tunable bandgaps, but research on combined ML and thermochromic functionalities is limited.
Purpose of the Study:
- To develop a lead-free perovskite material exhibiting tunable ML color and thermally activated emission switching for intelligent sensing.
- To explore the potential of multifunctional perovskite systems for advanced sensor applications.
Main Methods:
- Synthesized a lead-free Cs2ZrCl6: Sb3+ perovskite material.
- Utilized strategic doping to combine blue ML from the host with red-emitting centers.
- Investigated the material's colorimetric pressure sensing capabilities and thermal emission switching.
Main Results:
- Achieved dynamically tunable ML color and thermally activated emission switching in the Cs2ZrCl6: Sb3+ perovskite.
- Demonstrated colorimetric pressure sensing with a maximum relative sensitivity (Sr) of 1% K-1 at 300 K.
- Integrated the material into a photoelectric system for simultaneous optical intensity and chromaticity characterization.
Conclusions:
- Elucidated luminescence mechanisms in lead-free perovskites for combined ML and thermochromic effects.
- Established a new paradigm for developing intelligent, self-diagnostic ML sensors.
- Highlighted the potential of doped lead-free perovskites for advanced sensing technologies.
