Dual-phase glass ceramics for dual-modal optical thermometry through a spatial isolation strategy

Abstract

Glass ceramics (GCs) can be an ideal medium for dopants spatial isolation, avoiding adverse energy transfer process. Herein, spatial isolation strategy is proposed and fulfilled through dual-phases glass ceramics (GCs)....

Splendid four-mode optical thermometry design based on thermochromic Cs3GdGe3O9:Er3+ phosphors

“…CGGO:0.9Er 3+ exhibits superior sensitivity over most of the recently reported temperature measurement materials based on the FL technique. 35,37,40 In summary, the as-prepared CGGO:0.9Er 3+ possesses distinguished UC emission, a large thermo-caused chromaticity shift of 0.183 and excellent luminescent thermometry based on FIR from TCEL and NTCEL as well as FL. The merits in the different types of thermal sensing guarantee the precision and convenience of the CGGO:Er 3+ temperature monitoring signal.…”

“…CGGO:0.9Er 3+ exhibits superior sensitivity over most of the recently reported temperature measurement materials based on the FL technique. 35,37,40…”

“…Consequently, multi-mode luminescent thermometers are undoubtedly of high interest, and can enable the temperature monitoring signal to be more precise by integrating the superior temperature detection performance from different types of sensing modes. Dual-or three-mode optical thermometers have been developed continuously in recent years [33][34][35][36][37][38][39][40][41][42][43][44] and are mainly classified into four categories. One is the FIR techniques that combine TECL with NTECL.…”

“…[41][42][43] The second one is the integration of FL with FIR from TECL. 34,40 The third one is the coupling of FL with FIR from NTECL. [35][36][37] The last one is the combination of FL with FIR from TECL and NTECL.…”

“…10,44 Er 3+ , which features a luxuriant energy level structure as well as an appropriate TECL energy gap, 13 is a glorious UC luminescent center applied in temperature measurements. Although optical thermometry based on FIR from TECL or/and NTECL in diverse Er 3+ -doped materials including glass ceramics, 40,41 nanocrystals 6,28 and phosphors 45,46 has been investigated broadly, it is quite meaningful to explore Er 3+ -activated materials with multifunctional temperature determination.…”