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Related Experiment Video

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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
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Ultrasensitive Pressure-Responsive Upconversion Luminescence in Cs2NaBiCl6:Yb3+/Mn2+ Optical Manometry.

Qianqi Yang1,2,3, Chenliang Li1,4, Datao Tu1,2,3

  • 1State Key Laboratory of Structural Chemistry and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, China.

Advanced Materials (Deerfield Beach, Fla.)
|June 1, 2026
PubMed
Summary

A novel double perovskite material offers ultrasensitive optical pressure sensing. This material shows over forty times higher pressure sensitivity than existing methods, enabling precise pressure monitoring.

Keywords:
double perovskitehigh pressureoptical manometryupconversion

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Area of Science:

  • Materials Science
  • Optical Engineering
  • Solid-State Physics

Background:

  • Current optical manometers using ultraviolet (UV) excitation have limitations including low pressure sensitivity, high laser costs, and photoluminescence interference.
  • Existing methods struggle with spectral overlap between excitation/emission light and background fluorescence, hindering accurate measurements.

Purpose of the Study:

  • To develop a novel optical manometry material with enhanced pressure sensitivity and reduced interference.
  • To investigate the pressure-sensing capabilities of Cs2NaBiCl6:Yb3+/Mn2+ double perovskite for high-precision pressure monitoring.

Main Methods:

  • Synthesized Cs2NaBiCl6:Yb3+/Mn2+ double perovskite for optical manometry.
  • Utilized near-infrared (NIR) excitation at 980 nm to induce broadband upconversion emission from Yb3+-Mn2+ dimers.
  • Performed in situ pressure-dependent structural and Raman spectral analysis to evaluate material performance.

Main Results:

  • Achieved a linear upconversion pressure sensitivity of 15.03 nm/GPa, exceeding commercial Ruby (0.36 nm/GPa) and traditional phosphors (~0.20 nm/GPa) by over 40 times.
  • Identified the soft lattice structure of Cs2NaBiCl6 (bulk modulus of 23.69 GPa) as the source of exceptional pressure-sensing performance.
  • Demonstrated stability and repeatability of the material under extreme pressure conditions through Raman spectroscopy.

Conclusions:

  • Developed an ultrasensitive, pressure-responsive upconversion luminescent material based on Cs2NaBiCl6:Yb3+/Mn2+ double perovskite.
  • Established a reliable visual optical strategy for high-precision pressure monitoring in diverse applications.
  • Overcame limitations of UV-based optical manometry, paving the way for advanced pressure sensing technologies.