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How could ratiometric thermometry with thermally activated delayed fluorescent (TADF) emitters practically work?
1Inorganic Photoactive Materials, Institute of Inorganic Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany. markus.suta@hhu.de.
Physical Chemistry Chemical Physics : PCCP
|October 27, 2025
Summary
Thermally activated delayed fluorescent (TADF) emitters show promise for luminescence thermometry, offering a new avenue for remote temperature sensing. Understanding their unique properties is key to developing advanced temperature measurement tools.
Area of Science:
- Materials Science
- Physical Chemistry
- Optics
Background:
- Luminescence is a temperature-dependent phenomenon, enabling remote temperature sensing via luminescence thermometry.
- While inorganic phosphors are widely used, thermally activated delayed fluorescent (TADF) emitters remain underexplored for this application.
Purpose of the Study:
- To provide guidelines for using TADF emitters as luminescent thermometers.
- To differentiate TADF emitters from inorganic phosphors in thermometry applications.
Main Methods:
- Theoretical analysis of TADF emitter properties relevant to thermometry.
- Investigating the influence of photophysical parameters on temperature sensing capabilities.
Main Results:
- The dynamic working range of TADF-based thermometers is governed by the interplay of intersystem crossing and radiative decay rates.
- Guidelines for optimizing TADF emitter design for luminescence thermometry were established.
Conclusions:
- TADF emitters present a viable and promising alternative for advanced luminescence thermometry.
- Further research, building on foundational work, can unlock the full potential of TADF emitters in temperature sensing.
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