Abstract
AbstractPresent technological demands in disparate areas, such as microfluidics and nanofluidics, microelectronics and nanoelectronics, photonics and biomedicine, among others, have reached to a development such that conventional contact thermal probes are not accomplished anymore to perform accurate measurements with submicrometric spatial resolution. The development of novel noncontact thermal probes is, then, mandatory, contributing to an expansionary epoch of luminescence thermometry. Luminescence thermometry based on trivalent lanthanide ions has become very popular since 2010 due to the unique versatility, stability, and narrow emission band profiles of the ions that cover the entire electromagnetic spectrum with relatively high emission quantum yields. Here, a perspective overview on the field is given from the beginnings in the 1950s until the most recent cutting‐edge examples. The current movement toward usage of the technique as a new tool for thermal imaging, early tumor detection, and as a tool for unveiling the properties of the thermometers themselves or of their local neighborhoods is also summarized.
Highlights
Temperature, termed from Latin word ”temperātūra”, is an intensive physical quantity measuring the internal thermal energy state of a substance.[1]
The precise and accurate measurement of the temperature is vital across a broad spectrum of areas, such as automotive, aerospace and defense, metrology, climate, marine research, bio and nanomedicine, electronics, heating and cooling devices, production plants, and food’s storage.[411]
Summary and perspectives The field of luminescence thermometry is growing intensively showing significant breakthroughs in sensing, imaging, diagnostics and therapy, among other areas. This interest has been mostly encouraged because many of the present technological demands in areas such as micro and nanoelectronics, photonics, nanomedicine, micro and nanofluidics have reached a point such that the use of traditional contact thermal probes are not capable to make reliable measurements when spatial resolution enters to the submicron range
Summary
Temperature, termed from Latin word ”temperātūra”, is an intensive physical quantity measuring the internal thermal energy state of a substance.[1]. The present manuscript considers essentially those based on Ln3+ ions, being a follow up of the two books[84, 85] and the review papers published since 2015 on Ln3+-based luminescent thermometers.[9, 10, 16,17,18,19, 21, 50, 52, 74, 79, 80, 82, 83] The few examples involving other emitting centers are included in the text either in the context of historical reasons, e.g. the ZnCdSbased phosphors,[88,89,90,91] or due to its enormous impact for the development of the area, e.g. the Ag2S nanocrystals.[127]
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