Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Role of Lithium Codoping in Enhancing the Scintillation Yield of Aluminate Garnets

Journal Article · · Physical Review Applied
 [1];  [2];  [3];  [2];  [2];  [4];  [5];  [6];  [7];  [8];  [9]
  1. Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Inst. of Ceramics, Artificial Crystal Research Center
  2. North Carolina State Univ., Raleigh, NC (United States). Dept. of Nuclear Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division; East China Normal Univ. (ECNU), Shanghai (China). Key Lab. of Polar Materials and Devices (Ministry of Education) and Dept. of Physics
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  5. Beihang Univ., Beijing (China). School of Materials Science & Engineering,
  6. Univ. of Tennessee, Knoxville, TN (United States). Scintillation Materials Research Center and Dept. of Materials Science and Engineering
  7. North Carolina State Univ., Raleigh, NC (United States). Dept. of Nuclear Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  8. Univ. of Tennessee, Knoxville, TN (United States). Scintillation Materials Research Center
  9. Univ. of Tennessee, Knoxville, TN (United States). Scintillation Materials Research Center, Dept. of Materials Science and Engineering, Dept. of Nuclear Engineering, and Bredesen Center for Interdisciplinary Research and Graduate Education
The aim of this work is to clarify the scintillation-yield enhancement in LuYAG:Pr scintillators obtained by Li codoping via integrated study of the valence state of activators, the preferential site occupancy of Li codopants, and defect structures from experimental and theoretical insights. Here, with Li codoping, the light yield and energy resolution of 10×10×10mm3 LuYAG:Pr samples are improved from 156000 to 248000 photons/MeV, and 5.3 to 4.3% at 662 keV,respectively.The optical absorption spectra indicate that Li codoping does not induce conversion of stable Pr3+ to Pr4+ in LuYAG:Pr single crystals. Based on the formation energies of substitutional and interstitial Li sites using density-functional-theory (DFT) calculations and the 7Li nuclear magnetic resonance results, it is shown that the Li ions prefer to dominantly occupy the fourfold coordinated interstitial sites and fourfold coordinated Al sites. The systematic analysis of thermoluminescence glow curves, positron annihilation lifetime spectroscopies, and defect formation energies derived from DFT calculations reveals that the concentration of isolated Lu and Al vacancies as dominant acceptor defects is reduced by Li codoping, whilst the shallow Lii interstitial defects and the deep VO oxygen vacancies are introduced simultaneously. We propose that the lowering of hole trapping at defects resulting from Li codoping contributes to the scintillation-yield enhancement.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
Chinese Academy of Sciences; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1649422
Journal Information:
Physical Review Applied, Journal Name: Physical Review Applied Journal Issue: 6 Vol. 13; ISSN 2331-7019
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (53)

Towards Bright and Fast Lu 3 Al 5 O 12 :Ce,Mg Optical Ceramics Scintillators journal February 2016
The roles of thermalized and hot carrier diffusion in determining light yield and proportionality of scintillators journal November 2012
The antisite LuAl defect-related trap in Lu3Al5O12:Ce single crystal journal November 2005
Host structure dependence of light yield and proportionality in scintillators in terms of hot and thermalized carrier transport journal July 2012
Effect of Mg 2+ co-doping on the scintillation performance of LuAG:Ce ceramics : Effect of Mg journal November 2013
Improvements in Light Yield and Energy Resolution by Li + Codoping (Lu 0.75 Y 0.25 ) 3 Al 5 O 12 :Pr 3+ Single Crystal Scintillators journal July 2018
On the Role of Li + Codoping in Simultaneous Improvement of Light Yield, Decay Time, and Afterglow of Lu 2 SiO 5 :Ce 3+ Scintillation Detectors journal October 2018
6Li nuclear magnetic resonance chemical shifts, coordination number and relaxation in crystalline and glassy silicates journal October 1995
A high-energy resolution observed from a YAP:Ce scintillator
  • Kapusta, M.; Balcerzyk, M.; Moszyński, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 421, Issue 3 https://doi.org/10.1016/S0168-9002(98)01232-7
journal February 1999
Bridgman growth and site occupation in LuAG:Ce scintillator crystals journal October 2010
2 inch diameter single crystal growth and scintillation properties of Ce:Gd3Al2Ga3O12 journal August 2012
Revealing the role of calcium codoping on optical and scintillation homogeneity in Lu2SiO5:Ce single crystals journal September 2018
First-principles study on stability of Li, Na and Ca in Lu2SiO5 journal July 2013
Characterization of GAGG:Ce scintillators with various Al-to-Ga ratio
  • Sibczynski, Pawel; Iwanowska-Hanke, Joanna; Moszyński, Marek
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 772 https://doi.org/10.1016/j.nima.2014.10.041
journal February 2015
Growth and characterization of potassium strontium iodide: A new high light yield scintillator with 2.4% energy resolution
  • Stand, L.; Zhuravleva, M.; Lindsey, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 780 https://doi.org/10.1016/j.nima.2015.01.052
journal April 2015
Co-doping effects on luminescence and scintillation properties of Ce doped Lu3Al5O12 scintillator
  • Kamada, Kei; Nikl, Martin; Kurosawa, Shunsuke
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 782 https://doi.org/10.1016/j.nima.2015.01.105
journal May 2015
Effects of zirconium codoping on the optical and scintillation properties of SrI2:Eu 2 + single crystals
  • Wu, Yuntao; Li, Qi; Rutstrom, Daniel J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 954 https://doi.org/10.1016/j.nima.2018.09.077
journal February 2020
Scintillation yield enhancement in LuAG:Pr crystals following thermal annealing journal October 2012
Crystal growth and characterization of europium doped KCaI3, a high light yield scintillator journal October 2015
Effect of Li+ ions co-doping on luminescence, scintillation properties and defects characteristics of LuAG:Ce ceramics journal February 2017
Discovery of New Compounds and Scintillators of the A 4 BX 6 Family: Crystal Structure, Thermal, Optical, and Scintillation Properties journal July 2018
Unraveling the Critical Role of Site Occupancy of Lithium Codopants in Lu 2 SiO 5 :Ce 3+ Single-Crystalline Scintillators journal January 2019
Composition Engineering in Cerium-Doped (Lu,Gd) 3 (Ga,Al) 5 O 12 Single-Crystal Scintillators journal October 2011
27 Al NMR Chemical Shifts in Oxide Crystals: A First-Principles Study journal February 2009
Dissimilar behavior of YAG:Ce and LuAG:Ce scintillator garnets regarding Li + co-doping journal January 2018
Zero-dimensional Cs 4 EuX 6 (X = Br, I) all-inorganic perovskite single crystals for gamma-ray spectroscopy journal January 2018
High-energy-resolution scintillator: Ce3+ activated LaBr3 journal September 2001
Identification of defects in Y3Al5O12 crystals by positron annihilation spectroscopy journal September 2007
Strontium and barium iodide high light yield scintillators journal February 2008
Praseodymium valence determination in Lu 2 SiO 5 , Y 2 SiO 5 , and Lu 3 Al 5 O 12 scintillators by x-ray absorption spectroscopy journal September 2012
Improvement of γ-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping journal April 2013
Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method journal March 2017
The F-type centres in YAG crystals journal November 2001
Polarization of luminescence of colour centres in YAG crystals journal July 1991
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Alkali Halide Scintillation Counters journal July 1948
Role of Y Admixture in ( Lu 1 − x Y x ) 3 Al 5 O 12 ∶ Pr Ceramic Scintillators Free of Host Luminescence journal December 2016
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Shallow traps and radiative recombination processes in Lu 3 Al 5 O 12 : Ce single crystal scintillator journal November 2007
Assessment of correction methods for the band-gap problem and for finite-size effects in supercell defect calculations: Case studies for ZnO and GaAs journal December 2008
Positron lifetime measurements of hydrogen passivation of cation vacancies in yttrium aluminum oxide garnets journal November 2013
Generalized Gradient Approximation Made Simple journal October 1996
Oxygen coordinates of compounds with garnet structure journal December 1965
Absolute light output of scintillators journal June 1997
Effects of $\hbox {Ca}^{2+}$ Co-Doping on the Scintillation Properties of LSO:Ce journal June 2008
Scintillator Non-Proportionality: Present Understanding and Future Challenges journal June 2008
Energy Resolution of Calcium Co-Doped LSO:Ce Scintillators journal October 2009
Fundamental Limitations in the Performance of ${\rm Ce}^{3+}$–, ${\rm Pr}^{3+}$–, and ${\rm Eu}^{2+}$–Activated Scintillators journal June 2010
Needs, Trends, and Advances in Inorganic Scintillators journal August 2018
Li substituent tuning of LED phosphors with enhanced efficiency, tunable photoluminescence, and improved thermal stability journal January 2019
33000 photons per MeV from mixed (Lu_075Y_025)_3Al_5O_12:Pr scintillator crystals journal January 2014