Optical properties of Nd3+ ions doped GdTaO4 for pressure and temperature sensing

Improving Accuracy and Sensitivity of Lanthanide-Based Luminescent Manometers by Augmented Spectral Shift Method

“…The remote pressure measurements offered by luminescent manometer phosphors are crucial for enabling the technology of numerous new diagnostic fields, which were unavailable to any previous pressure-monitoring techniques. − The use of a pressure-dependent luminescence band shift, changes in luminescence kinetics, or the ratio of the intensity of two luminophore emission bands do not require electrical connections between the sensor and the sensing system. ,, This is especially important in a pressure chamber of the diamond anvil cell (DAC), microfluidic systems, or even biological systems. − One of the most popular and widely used luminescent pressure indicators is ruby, Al 2 O 3 :Cr 3+ . In this case, an increase in pressure leads to an increase in the covalence of the Cr 3+ –O 2– bond and a decrease in the Racah parameter.…”

Pressure-induced structural phase transition, irreversible amorphization and upconversion luminescence enhancement in Ln3+-codoped LiYF4 and LiLuF4

“…[15][16][17][18][19][20] Hydrostatic pressure, a thermodynamic variable besides temperature, can efficiently tune the crystal structure and electronic configuration of the materials. [21][22][23] In general, high pressures (HPs) can give rise to a series of variations in physicochemical characteristics through manipulating the crystal structure, that is, the pressure-driven contractive lattice volume, shortened interionic distances, newly emerged defects, transformed symmetry, and even phase transition or amorphization can possibly induce drastic changes in the electronic structure, phonon energy, electroconductivity, magnetism, thermostability, and mechanical and optical properties. [24][25][26][27][28][29][30] In recent years, high pressure has been proved to be a robust tool in the optical fields such as pressure-induced emission (PIE), pressure-driven energy transfer and pressure-modulated application as luminescent pressure sensors.…”

Piezochromism and anomalous near-infrared luminescence evolution of BaCuSi4O10 and BaCuSi2O6via pressure-induced phase transition

“…[16][17][18][19] Hydrostatic pressure is an important and effective tool to adjust the crystal field of compounds and physical/chemical properties of materials. [20][21][22][23][24] For example, the pressure-induced phase transition has received widespread attention. [25][26][27] In recent decades, the pressure driven crystal-field has been proved to be a powerful means to regulate optical performance, including enhancing the luminescence intensity, modulating the emission wavelength, and adjusting the absorption spectra.…”