Ratiometric optical thermometer with high sensitivity based on dual far-red emission of Cr3+ in Sr2MgAl22O36
Source abstract
Abstract
Abstract A series of Cr3+ ions activated Sr2MgAl22O36 inorganic luminescence materials were successfully synthesized. The structure provides suitable crystal field for Cr3+ ions to achieve both broadband and narrowband emission simultaneously in far-red region. Cr3+ ions doped Sr2MgAl22O36 reach the maximum of luminescence intensity when the concentration is increased to 0.02. When the concentration exceeds the value, the luminescence intensity of Cr3+ ions is quenched by the dipole-dipole interaction. The fluorescence intensity ratio I2/I1 (I1 and I2 represent the intensity at 677 and 693 nm, respectively) originating from Cr3+ ions in Sr2MgAl22O36 shows good linearity in the Arrhenius plot. The relative sensitivity of Sr2MgAl22O36: Cr3+ material at 310 K (physiological temperature) reaches 1.7% K-1, which has good application potential on ratiometric thermometers. Present researches indicate that Sr2MgAl22O36: Cr3+ has great potential application value on ratiometric thermometers.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Solid State Laser Technologies · Optical properties and cooling technologies in crystalline materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (49)
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