材料科学
发光
激发态
光电子学
声子
放松(心理学)
原子物理学
凝聚态物理
物理
心理学
社会心理学
作者
Ł. Marciniak,Wojciech Piotrowski,M. Drozd,Vasyl Kinzhybalo,Artur Bednarkiewicz,Miroslav Dramićanin
标识
DOI:10.1002/adom.202102856
摘要
Abstract Almost all existing luminescent thermometers rely on the temperature‐dependent processes such as multi‐phonon relaxation and phonon‐assisted energy transfers, thermal population, or coupling between energy levels of ground and excited states of luminescent species (lanthanides, transition metals, quantum dots, fluorescent molecules, etc.). Although such phenomena are in principle suitable for straightforward calibration, aiming to offer high temperature sensitivity, high temperature resolution and the widest possible temperature sensitivity range, their performance is often dependent on the excitation intensity or sample dispersive properties and often suffers from insufficient brightness, which further becomes dimmer at increased temperatures. Exploiting temperature‐dependent continuous phase transitions that modify the same near‐infrared (NIR) emission band under the same NIR excitation wavelength may provide an alternative reading method for temperature sensing. Here, such a new principle of luminescent nano‐thermometry (LNT) using a Nd 3+ doped nanocrystalline LiYO 2 matrix is studied, significant sensitivities of up to 6%/K are achieved, and other issues found in conventional LNT are circumvented. Due to the hysteresis found in this class of LNT, they may find applications in studies of temperature gradients and can be integrated with modern nanophotonic devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI