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Title: Using DFT Methods to Study Activators in Optical Materials

Journal Article · · ECS Journal of Solid State Science and Technology
DOI:https://doi.org/10.1149/2.0011601jss· OSTI ID:1210163
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Density functional theory (DFT) calculations of various activators (ranging from transition metal ions, rare-earth ions, ns2 ions, to self-trapped and dopant-bound excitons) in phosphors and scintillators are reviewed. As a single-particle ground-state theory, DFT calculations cannot reproduce the experimentally observed optical spectra, which involve transitions between multi-electronic states. However, DFT calculations can generally provide sufficiently accurate structural relaxation and distinguish different hybridization strengths between an activator and its ligands in different host compounds. This is important because the activator-ligand interaction often governs the trends in luminescence properties in phosphors and scintillators, and can be used to search for new materials. DFT calculations of the electronic structure of the host compound and the positions of the activator levels relative to the host band edges in scintillators are also important for finding optimal host-activator combinations for high light yields and fast scintillation response. Mn4+ activated red phosphors, scintillators activated by Ce3+, Eu2+, Tl+, and excitons are shown as examples of using DFT calculations in phosphor and scintillator research.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1210163
Journal Information:
ECS Journal of Solid State Science and Technology, Vol. 5, Issue 1; ISSN 2162-8769
Publisher:
Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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Cited By (5)

Negative Thermal Quenching of Efficient White‐Light Emission in a 1D Ladder‐Like Organic/Inorganic Hybrid Material journal July 2019
Experimental and theoretical study of the energetic, morphological, and photoluminescence properties of CaZrO 3 :Eu 3+ journal January 2018
Origin of the green persistent luminescence of Eu-doped SrAl 2 O 4 from a multiconfigurational ab initio study of 4f 7 → 4f 6 5d 1 transitions journal January 2018
Defect properties in Yb 3+ -doped CaF 2 from first-principles calculations: a route to defect engineering for up- and down-conversion photoluminescence journal January 2019
Review—Progress in Understanding Host-Sensitized Excitation Processes in Luminescent Materials journal January 2019

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