Upconverting nanoparticles as primary thermometers and power sensors
Luminescence thermometry is a spectroscopic technique for remote temperature detection based on the thermal dependence of the luminescence of phosphors, presenting numerous applications ranging from biosciences to engineering. In this work, we use the Er³+ emission of the NaGdF₄/NaGdF₄:Yb³+,Er³+/NaG...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/719343 |
| Acceso en línea: | http://hdl.handle.net/10486/719343 https://dx.doi.org/10.3389/fphot.2022.1037473 |
| Access Level: | acceso abierto |
| Palabra clave: | Lanthanides (III) upconversion nanoparticles (UCNPs) luminescent nanothermometer NIR radiation sensor bioimaging Física |
| Sumario: | Luminescence thermometry is a spectroscopic technique for remote temperature detection based on the thermal dependence of the luminescence of phosphors, presenting numerous applications ranging from biosciences to engineering. In this work, we use the Er³+ emission of the NaGdF₄/NaGdF₄:Yb³+,Er³+/NaGdF₄ upconverting nanoparticles upon 980 nm laser excitation to determine simultaneously the absolute temperature and the excitation power density. The Er³+ ² H11/2→⁴I15/2 and ⁴S3/2→⁴I15/2 emission bands, which are commonly used for thermometric purposes, overlap with the ² H9/2 →⁴I13/2 emission band, which can lead to erroneous temperature readout. Applying the concept of luminescent primary thermometry to resolve the overlapping Er³+ transitions, a dual nanosensor synchronously measuring the temperature and the delivered laser pump power is successfully realized holding promising applications in laser-supported thermal therapies |
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