Micro-Inclusion Engineering via Sc Incompatibility for Luminescence and Photoconversion Control in Ce3+-Doped Tb3Al5−xScxO12 Garnet
Abstract
:1. Introduction
2. Materials and Methods
2.1. Crystal Growth via Micro-Pulling down Technique
2.2. PXRD, Theoretical Calculations of Garnet Lattice Constants, SEM-EDS, and Raman Spectroscopy
2.3. Optical, Luminescence, Photoconversion, and Thermoluminescence Properties
3. Results and Discussion
3.1. PXRD, SEM-EDS, and Micro-Raman Analysis of Radii Mismatch Effect on the Secondary Phases Formation and Atom Segregation
3.2. Thermally Stimulated Luminescence in Sub-Eutectic Systems
3.3. Absorption Spectra
3.4. Thermally Induced Variations in Photoluminescence Emission Spectra and Decay Kinetic
3.5. Photoconversion Characteristics
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
CCD | Charge-Coupled Device |
CRI | Color Rendering Index |
LE | Luminous Efficacy |
mW | Milliwatt |
Powder Diffraction File | |
μ-PD | Micro-Pulling-Down |
SE | Secondary Electron |
TAP | Terbium Aluminum Perovskite (TbAlO3) |
TIR | Total Internal Reflection |
OSL | Optically Stimulated Luminescence |
YAG | Yttrium Aluminum Garnet (Y3Al5O12) |
CCT | Correlated Color Temperature |
LED | Light-Emitting Diode |
LD | Laser Diode |
nm | Nanometer |
PXRD | Powder X-ray Diffraction |
RL | Radioluminescence |
SEM-EDS | Scanning Electron Microscopy equipped with an Energy Dispersive X-ray Spectrometer |
TAG | Terbium Aluminum Garnet (Tb3Al5O12) |
TL | Thermoluminescence |
UV | Ultraviolet |
μ-RS | Micro-Raman Spectroscopy |
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Sc3+ Ions Concentration | Theoretical Lattice Parameters | Experimental Lattice Parameters | atheo–aexp | Vtheo–Vexp | ||
---|---|---|---|---|---|---|
a (Å) | V (Å3) | a (Å) | V (Å3) | |||
0.5 | 12.13 | 1788.35 | 12.11 | 1775.95 | 0.03 | 12.39 |
1.0 | 12.22 | 1826.18 | 12.22 | 1828.22 | −0.01 | −2.04 |
1.5 | 12.30 | 1864.54 | 12.21 | 1820.65 | 0.10 | 43.88 |
2.0 | 12.39 | 1903.43 | 12.20 | 1817.87 | 0.19 | 85.56 |
3.0 | n/a 1 | n/a 1 | 12.38 | 1897.00 | n/a 1 | n/a 1 |
Parameters | Sc3+ Ion Concentration in the Ce3+-Doped Tb3Asl5−xScxO12 Crystals | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
0.5 | 1.0 | 1.5 | 2.0 | 3.0 | ||||||
LD | LED | LD | LED | LD | LED | LD | LED | LD | LED | |
CRI | 69.9 | 69.0 | 68.5 | 79.3 | 77.6 | 83.6 | - | 65.6 | 60.9 | 84.3 |
CCT (K) | 4684 | 3545 | 4411 | 4742 | 5922 | 12,958 | - | 4942 | 4161 | 7635 |
LE (lm/W) | 60.0 | 87.4 | 94.7 | 99.7 | 70.7 | 74.3 | 48.4 | 114.6 | 17.6 | 30.3 |
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Bartosiewicz, K.; Tomala, R.; Szymański, D.; Albini, B.; Zeler, J.; Yoshino, M.; Horiai, T.; Socha, P.; Kurosawa, S.; Kamada, K.; et al. Micro-Inclusion Engineering via Sc Incompatibility for Luminescence and Photoconversion Control in Ce3+-Doped Tb3Al5−xScxO12 Garnet. Materials 2024, 17, 2762. https://doi.org/10.3390/ma17112762
Bartosiewicz K, Tomala R, Szymański D, Albini B, Zeler J, Yoshino M, Horiai T, Socha P, Kurosawa S, Kamada K, et al. Micro-Inclusion Engineering via Sc Incompatibility for Luminescence and Photoconversion Control in Ce3+-Doped Tb3Al5−xScxO12 Garnet. Materials. 2024; 17(11):2762. https://doi.org/10.3390/ma17112762
Chicago/Turabian StyleBartosiewicz, Karol, Robert Tomala, Damian Szymański, Benedetta Albini, Justyna Zeler, Masao Yoshino, Takahiko Horiai, Paweł Socha, Shunsuke Kurosawa, Kei Kamada, and et al. 2024. "Micro-Inclusion Engineering via Sc Incompatibility for Luminescence and Photoconversion Control in Ce3+-Doped Tb3Al5−xScxO12 Garnet" Materials 17, no. 11: 2762. https://doi.org/10.3390/ma17112762