Pulsed Laser Deposited Dysprosium‐Doped Gadolinium–Vanadate Thin Films for Noncontact, Self‐Referencing Luminescence Thermometry

Abstract

Lanthanide-doped vanadate thin films offer (i) a promising platform for luminescence-based noncontact temperature sensing; (ii) ratiometric/self-referencing absolute measurements; (iii) exceptional repeatability and reversibility for multirun uses and a long life cycle; (iv) 2% K(-1) maximum temperature sensitivity (among the highest recorded for inorganic nanothermometers); (v) a temperature resolution greater than 0.5 K; and (vi) the potential for high-resolution 2D temperature mapping.

Lanthanide‐Based Thermometers: At the Cutting‐Edge of Luminescence Thermometry

“…After this period, the number of publications and corresponding citations has continued to grow exponentially, Figure a,b. Intriguing examples involving Ln 3+ ‐doped materials are in situ measurements to visualize temperature gradients in photonic devices, microelectronic and microfluidic chips, catalytic processes, dosimeters working in high‐energy radiation fields, and heated air jets and internal parts of combustion engines . Currently, luminescence thermometry lives its inflationary epoch, with a total number of papers (citations) representing ≈2.5% (2.0%) of the total number of papers (citations) published in the same period in the context of luminescence or luminescent systems, Figure c,d.…”

Tandem Förster Resonance Energy Transfer Induced Luminescent Ratiometric Thermometry in Dye‐Encapsulated Biological Metal–Organic Frameworks

“…Hence, the development of biocompatible temperature probes is highly desired. Various types of material‐based thermometers have been developed for monitoring temperature at the cellular level, including europium (III) complexes, nanomaterials, polymers, quantum dots, and biomaterial microcantilevers …”

“…For example, lanthanide ions, luminescent dyes, and quantum dots could be encapsulated in MOFs for applications in color control and temperature sensing. [4d,e,f,9b] Many cases of LRT‐MOFs based on lanthanide ions have received much attention for their interesting temperature‐dependent luminescence properties. [3a,4b,5b,6,7] More recently, LRT‐MOFs constructed with mixed lanthanide ions (usually Tb 3+ and Eu 3+ ) have been reported by Qian and Chen et al with improved sensing performance and sensitivity.…”

“…[4d,e,f,9b] Many cases of LRT‐MOFs based on lanthanide ions have received much attention for their interesting temperature‐dependent luminescence properties. [3a,4b,5b,6,7] More recently, LRT‐MOFs constructed with mixed lanthanide ions (usually Tb 3+ and Eu 3+ ) have been reported by Qian and Chen et al with improved sensing performance and sensitivity. [1b,c,3a,4b,7] However, scarcity of rare earth metals could limit their extensive applications of any kind.…”

“…[3a,4b,5b,6,7] More recently, LRT‐MOFs constructed with mixed lanthanide ions (usually Tb 3+ and Eu 3+ ) have been reported by Qian and Chen et al with improved sensing performance and sensitivity. [1b,c,3a,4b,7] However, scarcity of rare earth metals could limit their extensive applications of any kind. Therefore, it is equally challenging to explore LRT‐MOFs constructed with readily available and inexpensive metals in this line of work.…”