Unknown

Dataset Information

0

Ratiometric temperature measurement using negative thermal quenching of intrinsic BiFeO3 semiconductor nanoparticles.


ABSTRACT: A strategy for optical nanothermometry using the negative thermal quenching behavior of intrinsic BiFeO3 semiconductor nanoparticles has been reported here. X-ray diffraction measurement shows polycrystalline BiFeO3 nanoparticles with a rhombohedral distorted perovskite structure. Transmission electron microscopy shows agglomerated crystalline nanoparticles around 20 nm in size. Photoluminescence measurements show that intensity of the defect level emission increases significantly with temperature, while the intensity of near band emission and other defect levels emissions show an opposite trend. The most important figures of merit for luminescence nanothermometry: the absolute (S a) and the relative sensor sensitivity (S r) and the temperature resolution (ΔT m) were effectively resolved and calculated. The relative sensitivity and temperature resolution values are found to be 2.5% K-1 and 0.2 K, respectively which are among the highest reported values observed so far for semiconductors.

SUBMITTER: Antic Z 

PROVIDER: S-EPMC9053172 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

Ratiometric temperature measurement using negative thermal quenching of intrinsic BiFeO<sub>3</sub> semiconductor nanoparticles.

Antić Željka Ž   Prashanthi K K   Kuzman Sanja S   Periša Jovana J   Ristić Zoran Z   Palkar V R VR   Dramićanin Miroslav D MD  

RSC advances 20200430 29


A strategy for optical nanothermometry using the negative thermal quenching behavior of intrinsic BiFeO<sub>3</sub> semiconductor nanoparticles has been reported here. X-ray diffraction measurement shows polycrystalline BiFeO<sub>3</sub> nanoparticles with a rhombohedral distorted perovskite structure. Transmission electron microscopy shows agglomerated crystalline nanoparticles around 20 nm in size. Photoluminescence measurements show that intensity of the defect level emission increases signif  ...[more]

Similar Datasets

| S-EPMC8728846 | biostudies-literature
| S-EPMC10784590 | biostudies-literature
| S-EPMC8554796 | biostudies-literature
| S-EPMC10366141 | biostudies-literature
| S-EPMC5182050 | biostudies-literature
| S-EPMC9043440 | biostudies-literature
| S-EPMC9923819 | biostudies-literature
| S-EPMC9057518 | biostudies-literature
| S-EPMC7851390 | biostudies-literature
| S-EPMC5981426 | biostudies-literature