A spatial/temporal dual-mode optical thermometry platform based on synergetic luminescence of Ti4+-Eu3+ embedded flexible 3D micro-rod arrays: High-sensitive temperature sensing and multi-dimensional high-level secure anti-counterfeiting

Negative thermal expansion triggered anomalous thermal upconversion luminescence behaviors in Er3+/Yb3+-codoped Y2Mo3O12 microparticles for highly sensitive thermometry

“…5(c), the FIR value of the blue (i.e., Tm 3+ ) to green (i.e., Er 3+ ) emissions is greatly increased from 2.17 to 16.93 when the temperature is tuned in 303-583 K range. Notably, the relationship between temperature and FIR value of non-TCLs of rare-earth ions is able to be described as follow: 34,35 To get deeper insight into the temperature sensing capacity of the developed composites, we explored its temperature-dependent S a and S r values by means of the following functions: 36,37 (6) = =…”

Optically Stimulated Luminescence Phosphors: Principles, Applications, and Prospects

“…To improve compatibility for some applications, such as optical bioimaging and optical data storage, sub‐micrometric and nanoscale particles with a homogenous morphology are required. [ 46,65–69 ]…”

“…Consequently, developing anti‐counterfeiting systems using encryption and decryption have great importance not only for government but also personal data security in daily life. [ 66,268 ] The conventional anti‐counterfeiting technique based on phosphor is too easy to be cloned and counterfeited owing to the simple approach—visible light emission induced by UV light excitation or color change driven by force. Therefore, it is necessary to develop innovative technologies for dynamic anti‐counterfeiting.…”

Optical properties of the CaEuAl3O7 phosphor with dual‐activator Eu2+/Eu3+ for multifunctional applications

“…Such self‐calibrated thermometers often exhibit high accuracy and reliability due to the independence of FIR for energy loss. 32,33 …”

“…[29][30][31] Such self-calibrated thermometers often exhibit high accuracy and reliability due to the independence of FIR for energy loss. 32,33 In this study, the CEAO phosphor is prepared by a simple high-temperature solid-phase method. For comparison, two samples are prepared in air and carbon rod reduction atmosphere, denoted as AIR and carbon rod reduction atmosphere (CRR), respectively.…”