Luminescence, energy transfer and thermal stability of Eu 2+ and Tb 3+ in the BaCa 2 MgSi 2 O 8 host

A novel Eu2+/Tb3+ co‐doped phosphor with pyroxene structure applied for cryogenic thermometric sensing

“…6,9 To enhance its absorption, energy transfer was often introduced, which is the most efficient method. The transition of 4f-5d is accompanied with broadband emission, while the transition of 4f-4f corresponds to sharp emission, the energy transfer couples have been extensively investigated to regulate the luminescence behavior, such as BaCa 2 MgSi 2 O 8 :Eu 2+ , Tb 3+ , 10 Sr 2 Ca 2 La(PO 4 ) 3 O:Eu 2+ , Tb 3+ , Mn 2+ , 5 and so on. It can be seen from this that the Eu 2+ , Tb 3+ pairs have an important position in the green-emitting phosphors.…”

Dual-Feedbacked Temperature Sensing of Er3+ in Fusiform-Polycrystalline-Implanted BaYF5/PAN Electrospun Fibers

“…Recently, advanced temperature measurement technology and material have long drawn great attention in the fields of industry, agriculture, scientific research, and biomedicine. , Optical temperature measurement meets the rapid, remote, and synchronous temperature response requirements by noncontact means and is the perfect choice for detecting fast-moving objects and operating in extremely harsh environments, such as submicron scale, high voltage, strong corrosivity, and so on. In numerous optical parameters such as fluorescence decay life, peak position shift, spectral shape, and so forth, the self-referencing optical thermometry based on the fluorescence intensity ratio (FIR) has become the most-reliable method of temperature sensing due to pre-eminent anti-interference capability which can effectively resist radiation damage and excitation source power fluctuation. − Moreover, FIR thermometry based on trivalent lanthanide ion-doped infrared luminescent materials can be expected to provide an accurate feedback since the distinguishable emission peaks as monitoring signals can suppress detection errors, which is promising to be used in living organisms via a noninvasive manner. − …”