TY  - JOUR
AU  - Prashanthi, Kovur
AU  - Antić, Željka
AU  - Thakur, Garima
AU  - Dramićanin, Miroslav
AU  - Thundat, Thomas
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1912
AB  - Wide-bandgap semiconductor nanowires with surface defect emission centers have the potential to be used as sensitive thermometers and optical probes. Here, we show that the green luminescence of multiferroic BiFeO3 (BFO) nanowires shows an anomalous negative thermal quenching (NTQ) with increasing temperatures. The release of trapped carriers from localized surface defect states is suggested as the possible mechanism for the increased green luminescence which was experimentally observed at elevated temperatures. A reasonable interpretation of the photoluminescence (PL) processes in BFO nanowires is achieved, and the activation energies of the PL quenching and thermal hopping are deduced. Negative thermal quenching of BFO nanowires provides a new strategy for optical thermometry at higher temperatures.
T2  - Physica Status Solidi - Rapid Research Letters
T1  - Surface State-Induced Anomalous Negative Thermal Quenching of Multiferroic BiFeO3 Nanowires
VL  - 12
IS  - 1
DO  - 10.1002/pssr.201700352
ER  - 

@article{
author = "Prashanthi, Kovur and Antić, Željka and Thakur, Garima and Dramićanin, Miroslav and Thundat, Thomas",
year = "2018",
abstract = "Wide-bandgap semiconductor nanowires with surface defect emission centers have the potential to be used as sensitive thermometers and optical probes. Here, we show that the green luminescence of multiferroic BiFeO3 (BFO) nanowires shows an anomalous negative thermal quenching (NTQ) with increasing temperatures. The release of trapped carriers from localized surface defect states is suggested as the possible mechanism for the increased green luminescence which was experimentally observed at elevated temperatures. A reasonable interpretation of the photoluminescence (PL) processes in BFO nanowires is achieved, and the activation energies of the PL quenching and thermal hopping are deduced. Negative thermal quenching of BFO nanowires provides a new strategy for optical thermometry at higher temperatures.",
journal = "Physica Status Solidi - Rapid Research Letters",
title = "Surface State-Induced Anomalous Negative Thermal Quenching of Multiferroic BiFeO3 Nanowires",
volume = "12",
number = "1",
doi = "10.1002/pssr.201700352"
}

Prashanthi, K., Antić, Ž., Thakur, G., Dramićanin, M.,& Thundat, T.. (2018). Surface State-Induced Anomalous Negative Thermal Quenching of Multiferroic BiFeO3 Nanowires. in Physica Status Solidi - Rapid Research Letters, 12(1).
https://doi.org/10.1002/pssr.201700352

Prashanthi K, Antić Ž, Thakur G, Dramićanin M, Thundat T. Surface State-Induced Anomalous Negative Thermal Quenching of Multiferroic BiFeO3 Nanowires. in Physica Status Solidi - Rapid Research Letters. 2018;12(1).
doi:10.1002/pssr.201700352 .

Prashanthi, Kovur, Antić, Željka, Thakur, Garima, Dramićanin, Miroslav, Thundat, Thomas, "Surface State-Induced Anomalous Negative Thermal Quenching of Multiferroic BiFeO3 Nanowires" in Physica Status Solidi - Rapid Research Letters, 12, no. 1 (2018),
https://doi.org/10.1002/pssr.201700352 . .