Ce:LuAG
Ce:LuAG Scintillator Crystal—A scintillation material suitable for high-power laser lighting
Cerium-activated LuAG was proposed as a proper candidate scintillator and a potential phosphor to make white light-emitting diodes. Single crystal Ce:LuAG has better detection rate than isostructural cerium-activated yttrium aluminum garnet (Ce:YAG) because of its higher density and higher effective atomic number. Ce:LuAG was significantly better than the other phosphors with respect to the thermal quenching. In addition, the luminescence spectrum of Ce:LuAG contains a large enough green component. Ce:LuAG single crystals are also widely used as scintillation detectors for γ-rays and high energy particles. The latest generation Ce:LuAG crystal shows a high light yield up to 26,000 pH/MeV, which has been considered as potential candidate in PET scanners due to the six times shorter decay time and almost identical density. Besides, Ce:LuAG has excellent physical and chemical performances and optical isotropy, making it a potential optical host material.
During last two decades, white-light sources has advanced rapidly and show great potential to replace conventional lighting sources like incandescent, fluorescent and high-intensity discharge lamps. It is essential for color converters for white-light sources to possess a high thermal conductivity, high reliability, and low thermal quenching. Ce:LuAG color converters are suitable for high-power laser lighting. It is an effective way to reduce the thermal quenching of phosphor is to use Ce:LuAG phosphor as well as achieving a higher color rendering index (CRI). Meanwhile, based on high density, high effective atomic number, short decay time and excellent energy resolution, Ce:LuAG single crystals are widely used as scintillation detectors for γ-rays and high energy particles.
Parameter
| Chemical formula | Ce: Lu3Al5O12 |
| Density (g/cm3) | 6.73 |
| Melting point (℃) | 2020 |
| Hardness (Mho) | 8.5 |
| Hygroscopic | No |
| Cleavage | No |
| Solubility (g/100gH2O) | N/A |
| Thermal expansion coeff (C-1) | 8.8*10-6 |
| Wavelength (Max. Emission) (nm) | 535 |
| Wavelength range (nm) | 475-800 |
| Decay time (ns) | 70 |
| Light yield (photons/keV) | 25 |
| Refractive index | 1.84@633nm |
| Radiation length (cm) | 1.3 |
| Optical transmission (um) | TBA |
| Transmittance (%) | TBA |
| Reflection loss/surface (%) | TBA |
| Light output relative to Nal(Tl) (%) | 20 |
| Energy resolution (%) | <8 |
| Neutron capture cross-section (barns) | TBA |
- High density
- High effective atomic number
- Short decay time
- Excellent energy resolution
- Excellent physical and chemical performances
- Optical isotropy
- High-performance solid laser
- White light-emitting diodes (WLEDs)
- High-power laser lighting
- High resolution X-ray imaging
- PET scanners
| [1] Petrosyan A G , Ovanesyan K L , Derdzyan M V , et al. A study of radiation effects on LuAG:Ce(Pr) co-activated with Ca[J]. Journal of Crystal Growth, 2015, 430:46-51. |
| [2] Petrosyan A G , Ovanesyan K L , Sargsyan R V , et al. Bridgman growth and site occupation in LuAG:Ce scintillator crystals[J]. Journal of Crystal Growth, 2010, 312(21):3136-3142. |
| [3] W, Chewpraditkul, L, et al. Comparative studies of Lu3Al5O12:Ce and Y3Al5O12:Ce scintillators for gamma-ray detection[J]. physica status solidi (a), 2009. |
| [4] Balci M H , Chen F , Cunbul A B , et al. Comparative study of blue laser diode driven cerium-doped single crystal phosphors in application of high-power lighting and display technologies[J]. Optical Review, 2017. |
| [5] Yanagida T , Fujimoto Y , Yokota Y , et al. Comparative study of transparent ceramic and single crystal Ce doped LuAG scintillators[J]. Radiation Measurements, 2011, 46(12):1503-1505. |
| [6] Zhuravleva M , Yang K , Spurrier-Koschan M , et al. Crystal growth and characterization of LuAG:Ce:Tb scintillator[J]. Journal of Crystal Growth, 2010, 312(8):1244-1248. |
| [7] Nikl M , Yoshikawa A , Kamada K , et al. Development of LuAG-Based Scintillator Crystals – A Review[J]. Progress in Crystal Growth and Characterization of Materials, 2013, 59(2):47-72. |
| [8] Koizumi H , Watabe J , Sugiyama S , et al. Effect of sintering temperature of Ce3+-doped Lu3Al5O12 phosphors on light emission and properties of crystal structure for white-light-emitting diodes[J]. Optical Review, 2018. |
| [9] Ogino H , Yoshikawa A , Nikl M , et al. Growth and optical properties of Lu 3(Ga,Al) 5O 12 single crystals for scintillator application[J]. Journal of Crystal Growth, 2009, 311(3):908-911. |
| [10] Kamada K , Nikl M , Kurosawa S , et al. Growth and Scintillation Properties of Li and Ce co-doped Lu3Al5O12 scintillator[J]. Journal of Crystal Growth, 2016:85-88. |
| [11] Ku?Era M , Pru?A P , Mare? J A , et al. Growth and scintillation properties of Sc, Pr, Ce co-doped LuAG epitaxial garnet layers[J]. IOP Conference Series: Materials Science and Engineering, 2010, 15:012012. |
| [12] Growth of long undoped and Ce-doped LuAG single crystal fibers for dual readout calorimetry[J]. Journal of Crystal Growth, 2016, 435:31-36. |
| [13] JM Ogiegło, Zych A , Ivanovskikh K V , et al. Luminescence and Energy Transfer in Lu3Al5O12 Scintillators Co-Doped with Ce3+ and Tb3+[J]. The Journal of Physical Chemistry A, 2013, 116(33):8464-8474. |
| [14] Babin V , Laguta V V , Makhov A , et al. Luminescence and ESR study of irregular $Ce^{3+}$ ions in LuAG:Ce single crystals[J]. IEEE Transactions on Nuclear Science, 2008, 55(3):1156-1159. |
| [15] Zorenko Y V , Gorbenko V I , Stryganyuk G B , et al. Luminescence of excitons and antisite defects in Lu 3 Al 5 O 12 :Ce single crystals and single-crystal films[J]. Optics & Spectroscopy, 2005, 99(6):923-931. |
| [16] Derdzyan M V , Ovanesyan K L , Petrosyan A G , et al. Radiation hardness of LuAG:Ce and LuAG:Pr scintillator crystals[J]. Journal of Crystal Growth, 2012, 361:212-216. |
| [17] Lucchini M T , Pauwels K , Blazek K , et al. Radiation Tolerance of LuAG:Ce and YAG:Ce Crystals Under High Levels of Gamma- and Proton-Irradiation[J]. IEEE Transactions on Nuclear Science, 2016, 63(2):586-590. |
| [18] Yanagida T , Fujimoto Y , Yokota Y , et al. Scintillation properties of LuAG (Ce) ceramic and single crystalline scintillator[J]. IEEE Nuclear ence Symposium conference record. Nuclear ence Symposium, 2010. |
| [19] Scintillation properties of LuAG:Ce, YAG:Ce and LYSO:Ce crystals for gamma-ray detection[J]. IEEE Transactions on Nuclear Science, 2009, 56(6):3800-3805. |
| [20] Pidol L , Viana B , A Bessières, et al. High Efficiency of Lutetium Silicate Scintillators, Ce-Doped LPS and LYSO Crystals for Medical Applications[J]. Materials Science Forum, 2007, 555:371. |
| [21] Zhong J P , Liang H B , Qiang S U , et al. Spectroscopic properties of vacancies and trap levels in Lu 3Al 5O 12:Ce 3+ crystals[J]. Transactions of Nonferrous Metals Society of China, 2009, 19(6):1628-1633. |
| [22] Ryu, J, H, et al. Strong thermal stability of Lu3Al5O12:Ce3+ single crystal phosphor for laser lighting[J]. Journal of Luminescence An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter, 2017. |
| [23] Linxiang, WANG, and, et al. Synthesis and luminescent properties of Ce3+ doped LuAG nano-sized powders by mixed solvo-thermal method[J]. Journal of Rare Earths, 2010. |
| [24] Wang Z , Xu M , Zhang W , et al. Synthesis and luminescent properties of nano-scale LuAG:RE3+ (Ce, Eu) phosphors prepared by co-precipitation method[J]. Journal of Luminescence, 2007, 122(Jan/Apr):437-439. |
| [25] Babin V , Gorbenko V , Makhov A , et al. The role of Pb2+ ions in the luminescence of LuAG:Ce single crystalline films[J]. Physica Status Solidi, 2011, 4(3):797-800. |
| [26] Tous, Blazek, Pina, et al. Thin YAG:Ce and LuAG:Ce single crystal imaging plates used for high spatial resolution in X-ray imaging systems[J]. IEEE, 2008. |
More Picture
Related Products
