Dual‐Window Broadband Near‐Infrared Mechanoluminescence in MgO‐Based Phosphors
Ocean University of China · Sun Yat-sen University
Abstract
ABSTRACT Near‐infrared (NIR) mechanoluminescence (ML) offers a self‐powered and non‐invasive route for stress visualization and biomechanical imaging, yet most NIR ML materials remain constrained by narrow emission bandwidths and reliance on dark‐field conditions. Here, we report two complementary MgO‐based ML systems spanning the NIR‐I and NIR‐II windows, establishing MgO as a robust platform for broadband mechanoresponsive emission. MgO:Cr 3+ delivers tunable NIR‐I ML (700–1000 nm; full width at half maximum, FWHM, 94–188 nm) under diverse mechanical stimuli, including friction, impact, tension, compression, bending, and twisting, while MgO:Ni 2+ produces ultrabroadband NIR‐II ML (1000–1700 nm; FWHM 225 nm)…
Citation impact
- FWCI
- 29.61
- Percentile
- 100%
- References
- 34
Authors
9Topics & keywords
- Mechanoluminescence
- Broadband
- Triboelectric effect
- Full width at half maximum
- Excitation
- Phosphor
- Optomechanics
- Piezoelectricity