Journal article Open Access
Periša, Jovana; Ristić, Zoran; Piotrowski, Wojciech; Atić, Željka; Marciniak, Lukasz; Dramićanin, Miroslav D.
Manuscript published in the Open Access Journal:
Jovana Periša, Zoran Ristić, Wojciech Piotrowski, Željka Antić, Lukasz Marciniak and Miroslav D. Dramićanin
All near-infrared multiparametric luminescence thermometry using Er3+, Yb3+-doped YAG nanoparticles
RSC Adv., 2021, 11, 15933
This paper presents four new temperature readout approaches to luminescence nanothermometry in spectral regions of biological transparency demonstrated on Yb3+/Er3+-doped yttrium aluminum garnet nanoparticles. Under the 10638 cm-1 excitation, down-shifting near infrared emissions (> 10000 cm-1) are identified as those originating from Yb3+ ions’ 2F5/2➝2F7/2 (~ 9709 cm-1) and Er3+ ions’ 4I13/2➝4I15/2 (~6494 cm-1) electronic transitions and used for 4 conceptually different luminescence thermometry. Observed variations in luminescence parameters with temperature offered an exceptional base for studying multiparametric temperature readouts. These include the temperature-dependence of: (i) intensity ratio between emissions from Stark components of Er3+ 4I13/2 level; (ii) intensity ratio between emissions of Yb3+ (2F5/2➝2F7/2 transition) and Er3+ (4I13/2➝4I15/2 transition); (iii) band shift and bandwidth and (iv) lifetime of the Yb3+ emission (2F5/2➝2F7/2 transition) with maximal sensitivities of 1 %K-1, 0.8 %K-1, 0.09 cm-1K-1, 0.46 %K-1 and 0.86 %K-1, respectively. The multimodal temperature readout provided by this material enables its application in different luminescence thermometry setups as well as improved the reliability of the temperature sensing by the cross-validation between measurements.