Customized Cr <sup>3+</sup> ‐Doped Disordered Structures Enhance Optical Manometry
Ke Su, Lefu Mei, Zunqi Liu, Xin Pan, Pengfei Shuai, Jiyang Xie, Bin Ma, Qingfeng Guo, Cunjian Lin, Mingxing Chen, Zhijian Peng, Libing Liao, Wanbiao Hu, Guocheng Lv
Abstract
Abstract Balancing sensitivity and detection range in dynamic pressure monitoring materials remains challenging, with commercial ruby (Al 2 O 3 :Cr 3+ ) sensors limited by strong crystal fields, restricting performance under extreme conditions. Here, an innovative strategy utilizing an ordered‐to‐disordered structural conversion in Cr 3+ doped Ca(Mg,Sc)(Al,Si)O 6 phosphors is introduced. This approach achieves a remarkable blueshift sensitivity of 15.08 nm GPa −1 –2.8 times higher than ordered structures and 41 times higher than commercial sensors while maintaining a broad detection range up to 7.5 GPa. Moreover, enhanced structural rigidity notably improves luminescence intensity and thermal stability. The findings establish a robust paradigm for designing high‐performance optical pressure sensors, significantly addressing the traditional trade‐off between sensitivity and detection range, showing promising applications in geological exploration and aerospace fields.