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Title: Scintillation properties and electronic structure of the intrinsic and extrinsic mixed elpasolites Cs2 Na RBr3I3 (R = La, Y)

Journal Article · · Physical Review Applied
 [1];  [2];  [1];  [3];  [1];  [1];  [2]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Stanford Univ., Stanford, CA (United States)

Scintillators attract wide research interest for their distinct applications in radiation detection. Elpasolite halides are among the most promising scintillators due to their high structural symmetry and good scintillation performance. A better understanding of their underlying scintillation mechanism opens up possibilities in scintillator development. In this work, we employ a variety of experimental techniques to study the two mixed-anion elpasolites Cs2NaRBr3I3 (R = La, Y). The emission of intrinsic Cs2NaRBr3I3 with a light yield ranging from 20 000 to 40 000 ph / MeV is dominant by self-trapped exciton emission. Partial substitution of R with Ce introduces a competing emission, the Ce3+ 5d-to-4f radiative transition. Ab initio calculations are performed to investigate the electronic structures as well as the binding energies of polarons in Cs2NaRBr6. The calculated large self-trapped exciton binding energies are consistent with the observed high light yield due to self-trapped exciton (STE) emission. The unique electronic structure of halide elpasolites as calculated enhances the STE stability and the STE emission. The highly tunable scintillation properties of mixed-anion elpasolites underscore the role of their complex scintillation mechanism. Furthermore, our study provides guidance for the design of elpasolite scintillators with exceptional energy resolution and light yield desirable for applications.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1244201
Alternate ID(s):
OSTI ID: 1238410
Journal Information:
Physical Review Applied, Vol. 5, Issue 2; ISSN 2331-7019
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (52)

The Role of PET Scan in Diagnosis, Staging, and Management of Non‐Small Cell Lung Cancer journal November 2004
Role of Ce 4 + in the Scintillation Mechanism of Codoped Gd 3 Ga 3 Al 2 O 12 Ce journal October 2014
Cerium-doped lutetium oxyorthosilicate: a fast, efficient new scintillator journal January 1992
Scintillator developments for high energy physics and medical imaging journal January 2000
Applications of single crystals in oil well logging journal February 1991
Scintillation: mechanisms and new crystals journal July 2004
The quest for the ideal inorganic scintillator
  • Derenzo, S. E.; Weber, M. J.; Bourret-Courchesne, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 505, Issue 1-2, p. 111-117 https://doi.org/10.1016/S0168-9002(03)01031-3
journal June 2003
Light output and energy resolution of Ce3+-doped scintillators journal June 2002
LaBr 3 :Ce and SiPMs for time-of-flight PET: achieving 100 ps coincidence resolving time journal March 2010
Crystal growth and scintillation properties of potassium strontium bromide journal August 2015
Characterization of the CLYC detector for neutron and photon detection
  • Bourne, M. M.; Mussi, C.; Miller, E. C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 736 https://doi.org/10.1016/j.nima.2013.10.030
journal February 2014
Optical and scintillation properties of pure and Ce3+-doped Cs2LiYCl6 and Li3YCl6:Ce3+ crystals journal October 1999
f–d Luminescence of Pr3+ and Ce3+ in the chloro-elpasolite Cs2NaYCl6 journal September 1999
Luminescence properties of Ce-doped Cs2LiLaCl6 crystals journal March 2000
Crystal structure of dipotassium sodium fluoroaluminate (elpasolite) journal December 1974
Phase transitions in elpasolites (ordered perovskites) journal November 1998
New quadruple perovskites Ln 2 Ba 2 Ti x Sn 2–x Cu 2 O 11 , (0⩽x⩽2): controlling copper–oxygen distances in potential superconducting parent phases journal January 1993
Neutron Scattering Studies on Phase Transition and Phonon Dispersion in Cs2NaBiCl6 journal August 1984
Selected Properties of Cs$_{2}$LiYCl$_{6}$, Cs$_{2}$LiLaCl$_{6}$, and Cs$_{2}$LiLaBr$_{6}$ Scintillators journal February 2011
Scintillation and spectroscopy of the pure and Ce -doped elpasolites: Cs 2 LiYX 6 (X   Cl, Br) journal August 2002
Scintillation and anomalous emission in elpasolite Cs2LiLuCl6:Ce3+ journal April 2006
Scintillation characteristics of Cs2LiCeBr6 crystal
  • Cheon, Jong Kyu; Kim, Sunghwan; Rooh, Gul
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 652, Issue 1 https://doi.org/10.1016/j.nima.2011.02.038
journal October 2011
Scintillation Properties of a Cs2NaCeBr6 Crystal under X-ray, $gamma$-ray and Proton Irradiations journal May 2009
Luminescence and Scintillation Characterization of Cs2NaGdBr6: Ce3+ Single Crystal journal March 2012
Scintillation properties of Cs2LiLaBr6 (CLLB) crystals with varying Ce3+ concentration
  • Shirwadkar, Urmila; Glodo, Jarek; van Loef, Edgar V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 652, Issue 1 https://doi.org/10.1016/j.nima.2010.08.050
journal October 2011
Discrete Electronic Bands in Semiconductors and Insulators: Potential High-Light-Yield Scintillators journal May 2015
Embedded-ion method: An analytical energy-conserving charge-transfer interatomic potential and its application to the La-Br system journal December 2008
Two new cerium-doped mixed-anion elpasolite scintillators: Cs2NaYBr3I3 and Cs2NaLaBr3I3 journal December 2014
Scintillation Properties of Cs$_{3}$LaCl$_{6}$:Ce$^{3+}$ and Cs$_{3}$LaBr$_{6}$:Ce$^{3+}$ journal February 2014
The scintillation properties of CeBr 3−x Cl x single crystals journal December 2014
Temperature dependence spectroscopic study of Ce-doped Cs3LaCl6 and Cs3LaBr6 scintillators journal April 2015
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011
Sample-to-Sample Variation in Single Crystal YAP:Ce Non-Proportionality journal February 2014
Stepless Variable Resistor for High Currents journal January 1961
Effect of Ba substitution in CsSrI3:Eu2+ journal December 2013
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
First-principles calculations to describe zirconia pseudopolymorphs journal February 1999
Screened hybrid density functionals applied to solids journal April 2006
First principles study of native defects in InI journal June 2011
First-principles study of native defects in TlBr: Carrier trapping, compensation, and polarization phemomenon journal September 2010
Impurity-bound small polarons in ZnO: Hybrid density functional calculations journal September 2009
Linear optical properties in the projector-augmented wave methodology journal January 2006
Projector augmented-wave method journal December 1994
Scintillation properties and anomalous Ce 3+ emission of Cs 2 NaREBr 6 :Ce 3+ (RE = La,Y,Lu) journal June 2006
Level location and spectroscopy of , , , and in journal April 2006
Low-Temperature Luminescence of Lu 2 O 3 :Eu Ceramics upon Excitation with Synchrotron Radiation in the Vicinity of Band Gap Energy journal April 2006
Small polarons in real crystals: concepts and problems journal May 1993
Trapping, self-trapping and the polaron family journal May 2007
Properties of the YAP : Ce scintillator
  • Moszyński, M.; Kapusta, M.; Wolski, D.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 404, Issue 1 https://doi.org/10.1016/S0168-9002(97)01115-7
journal February 1998
Energy transport and scintillation of cerium-doped elpasolite Cs 2 LiYCl 6 : Hybrid density functional calculations journal July 2012
Electronic structure engineering of elpasolites: Case of Cs2AgYCl6 journal November 2013

Figures / Tables (17)