Impact of varying Li+ concentration on the upconversion emission and temperature sensing characteristics of YVO4: Tm3+/Yb3+ phosphor

Thakur, Himani; Singh, Sachin; Gathania, Arvind K.; Kumar Singh, Sunil; Kumar, Ishant; Kumar Singh, Rajesh

doi:10.1016/j.inoche.2023.111495

Cited by 8 publications

(1 citation statement)

References 44 publications

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“…CNPs have similar luminescence qualities to SQDs with certain advantages like low toxicity, economical production costs, and strong photostability. CNPs exceptional properties make them excellent candidates for a variety of applications, including metal ion detection [7][8][9], fluorescent ink [10,11], optoelectronic applications [12], fluorescent probes [13], bioimaging, biosensing [14], photocatalysis [15], nematic liquid crystals [16], optical thermometry [17][18][19], drug delivery and, nanomedicine [20]. CNPs synthesis strategies are broadly classified as top-down and bottom-up approaches.…”

Section: Introductionmentioning

confidence: 99%

Castor seed-derived luminescent carbon nanoparticles for metal ion detection and temperature sensing applications

Kumar,

Kumar

et al. 2024

Phys. Scr.

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In the current study, castor seeds are used as a first-time natural precursor in the hydrothermal process of making carbon nanoparticles. The produced nanoparticles have a non-uniform size distribution with an average diameter of 13 nm and a roughly spherical shape. They comprise a variety of functional groups containing carbon, nitrogen, and oxygen. Their spectra have peaks at 524 nm and 441 nm for their emission and excitation, respectively. They exhibit temperature-sensitive Photoluminescence (Pl) behavior, high quantum yield value (24%), and excitation-dependent emission. In high salt environments, UV radiation, storage time, and fluorescent light they provide exceptional photostability. They have been used in applications for metal ion and thermal sensing. With a limit of detection (LOD) value of 18 µM, they are found to be both sensitive and selective to Fe3+ ions. Additionally, a nanothermosensor with good recovery and a broad temperature range (5-85°C) has also been demonstrated with a thermal sensitivity of 0.54% °C-1 based on their temperature-sensitive behavior.

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