Surface State-Induced Anomalous Negative Thermal Quenching of Multiferroic BiFeO3 Nanowires
Само за регистроване кориснике
2018
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
BiFeO3 nanowires / multiferroics / photoluminescence / surface states / thermal quenchingИзвор:
Physica Status Solidi - Rapid Research Letters, 2018, 12, 1Финансирање / пројекти:
- Serbian Ministry of Education, Science, and Technological development [Grant No. 17022]
- Canada Excellence Research Chairs (CERC) Program
DOI: 10.1002/pssr.201700352
ISSN: 1862-6254; 1862-6270
WoS: 000419951700011
Scopus: 2-s2.0-85034220981
Институција/група
VinčaTY - 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 . .