DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Combining experiment and computation to elucidate the optical properties of Ce3+ in Ba5Si8O21

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI: https://doi.org/10.1039/c9cp05576b · OSTI ID:1600783

Complex alkaline earth silicates have been extensively studied as rare-earth substituted phosphor hosts for use in solid-state lighting. One of the biggest challenges facing the development of new phosphors is understanding the relationship between the observed optical properties and the crystal structure. Fortunately, recent improvements in characterization techniques combined with advances in computational methodologies provide the research tools necessary to conduct a comprehensive analysis of these systems. Here, a new Ce3+ substituted phosphor is developed using Ba5Si8O21 as the host crystal structure. The compound is evaluated using a combination of experimental and computational methods and shows Ba5Si8O21:Ce3+ adopts a monoclinic crystal structure that was confirmed through Rietveld refinement of high-resolution synchrotron powder X-ray diffraction data. Photoluminescence spectroscopy reveals a broad-band blue emission centered at ~440 nm with an absolute quantum yield of ~45% under ultraviolet light excitation (λex = 340 nm). This phosphor also shows a minimal chromaticity-drift but with moderate thermal quenching of the emission peak at elevated temperatures. The modest optical response of this phase is believed to stem from a combination of intrinsic structural complexity and the formation of defects because of the aliovalent rare-earth substitution. Finally, computational modeling provides essential insight into the site preference and energy level distribution of Ce3+ in this compound. These results highlight the importance of using experiment and computation in tandem to interpret the relationship between observed optical properties and the crystal structures of all rare-earth substituted complex phosphors.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); USDOE Office of Science (SC); Welch Foundation
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1600783
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 4 Vol. 22; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (65)

An improved experimental determination of external photoluminescence quantum efficiency journal March 1997
Insights into the discrepant luminescence for BaSiO 3 :Eu 2+ phosphors prepared by solid-state reaction and precipitation reaction methods journal February 2017
Luminescent Materials book January 1994
Luminescence characteristics of yellow emitting Ba3SiO5:Eu2+ phosphor journal April 2005
The ternary system BaSiO3-SrSiO3-SiO3 journal May 1993
A complete active space SCF method (CASSCF) using a density matrix formulated super-CI approach journal May 1980
The multi-state CASPT2 method journal May 1998
MOLCAS: a program package for computational chemistry journal October 2003
Effect of RE3+ electronegativities on luminescence property of Ba5Si8O21:Eu2+ persistent phosphor journal May 2016
Experimental investigation of liquidus and phase stability in the BaO–SiO 2 binary system journal February 2016
Blue-shift of spectrum and enhanced luminescent properties of YAG: Ce3+ phosphor induced by small amount of La3+ incorporation journal July 2016
Properties of a novel Ba 5 Si 8 O 21 :Eu 2+ , Nd 3+ phosphor: Bulk and 1D nanostructure with PVP synthesized by sol-gel and electrospinning journal July 2017
Up conversion luminescence of Yb3+–Er3+ codoped CeO2 nanocrystals with imaging applications journal March 2012
Single-particle-diagnosis approach: An efficient strategy for discovering new nitride phosphors journal January 2018
Luminescence enhancement of Eu2+, Ce3+ co-doped Ba3Si5O13−δNδ phosphors journal March 2010
Optical properties of Ba2SiO4:Eu2+ phosphor for green light-emitting diode (LED) journal January 2007
Nitride and oxynitride phosphors for white LEDs: Synthesis, new phosphor discovery, crystal structure journal September 2018
Bluish-green color emitting Ba2Si3O8:Eu2+ ceramic phosphors for white light-emitting diodes journal October 2009
Influence of Anion/Cation Substitution (Sr 2+ → Ba 2+ , Al 3+ → Si 4+ , N 3– → O 2– ) on Phase Transformation and Luminescence Properties of Ba 3 Si 6 O 15 :Eu 2+ Phosphors journal February 2017
Achieving High Quantum Efficiency Narrow-Band β-Sialon:Eu 2+ Phosphors for High-Brightness LCD Backlights by Reducing the Eu 3+ Luminescence Killer journal December 2017
Ba 3 Y 2 B 6 O 15 :Ce 3+ —A High Symmetry, Narrow-Emitting Blue Phosphor for Wide-Gamut White Lighting journal March 2018
Improving Quantum Efficiency and Thermal Stability in Blue-Emitting Ba 2– x Sr x SiO 4 :Ce 3+ Phosphor via Solid Solution journal July 2018
Understanding Thermal Quenching of Photoluminescence in Oxynitride Phosphors from First Principles journal February 2016
Identifying the Emission Centers and Probing the Mechanism for Highly Efficient and Thermally Stable Luminescence in the La 3 Si 6 N 11 :Ce 3+ Phosphor journal March 2018
Combinatorial Approach to the Development of a Single Mass YVO 4 :Bi 3+ ,Eu 3+ Phosphor with Red and Green Dual Colors for High Color Rendering White Light-Emitting Diodes journal July 2010
A Simple, Efficient Synthetic Route to Sr 2 Si 5 N 8 :Eu 2+ -Based Red Phosphors for White Light-Emitting Diodes journal November 2006
Consequences of Optimal Bond Valence on Structural Rigidity and Improved Luminescence Properties in Sr x Ba 2– x SiO 4 :Eu 2+ Orthosilicate Phosphors journal March 2014
Sunlight Activated Long-Lasting Luminescence from Ba 5 Si 8 O 21 : Eu 2+ ,Dy 3+ Phosphor journal January 2015
Second-order perturbation theory with a CASSCF reference function journal July 1990
Chemical Unit Cosubstitution and Tuning of Photoluminescence in the Ca 2 (Al 1– x Mg x )(Al 1– x Si 1+ x )O 7 :Eu 2+ Phosphor journal September 2015
Tunable Blue-Green Color Emission and Energy Transfer of Ca 2 Al 3 O 6 F:Ce 3+ ,Tb 3+ Phosphors for Near-UV White LEDs journal July 2012
Advances in Phosphors for Light-emitting Diodes journal May 2011
A zero-thermal-quenching phosphor journal February 2017
Red phosphor converts white LEDs journal October 2014
Defect-Induced Luminescence Quenching vs. Charge Carrier Generation of Phosphorus Incorporated in Silicon Nanocrystals as Function of Size journal April 2017
Recent progress in luminescence tuning of Ce 3+ and Eu 2+ -activated phosphors for pc-WLEDs journal January 2015
Insights into Ba 4 Si 6 O 16 structure and photoluminescence tuning of Ba 4 Si 6 O 16 :Ce 3+ ,Eu 2+ phosphors journal January 2015
Ce 3+ -Doped garnet phosphors: composition modification, luminescence properties and applications journal January 2017
Luminescence properties of Eu 2+ -doped BaSi 2 O 5 as an efficient green phosphor for light-emitting devices and wide color gamut field emission displays journal January 2016
Synthesis, structure and luminescent properties of a new blue-green-emitting garnet phosphor Ca 2 LuScZrAl 2 GeO 12 :Ce 3+ journal January 2016
Novel zirconium silicate phosphor K 2 ZrSi 2 O 7 :Eu 2+ for white light-emitting diodes and field emission displays journal January 2016
Thermally stable K x Cs 1−x AlSi 2 O 6 :Eu 2+ phosphors and their photoluminescence tuning journal January 2017
Synthesis, electronic structures, and photoluminescence properties of an efficient and thermally stable red-emitting phosphor Ca 3 ZrSi 2 O 9 :Eu 3+ ,Bi 3+ for deep UV-LEDs journal January 2018
Candela‐class high‐brightness InGaN/AlGaN double‐heterostructure blue‐light‐emitting diodes journal March 1994
Hybrid functionals based on a screened Coulomb potential journal May 2003
Luminescent Materials journal July 1939
The complete active space SCF (CASSCF) method in a Newton–Raphson formulation with application to the HNO molecule journal February 1981
The a b i n i t i o model potential representation of the crystalline environment. Theoretical study of the local distortion on NaCl:Cu + journal November 1988
Preparation, electronic structure, and photoluminescent properties of Eu 2+ activated BaSi 2 O 5 powder phosphors for solid-state lighting journal December 2015
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Ab initiomolecular dynamics for liquid metals journal January 1993
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Inhomogeneous Electron Gas journal March 1973
EXPGUI , a graphical user interface for GSAS journal April 2001
Phase Separation in the System BaO-SiO2 journal May 1968
Electronic Structures and Pr3+ Photoluminescence Characteristics in Fresnoite, Sr-Frenoite, and Ge-Frenoite: Electronic Structures and Pr3+ Photoluminescence Characteristics journal September 2010
Solid-State Light Sources Getting Smart journal May 2005
Effects of Composition on the Long Phosphorescent SrAl[sub 2]O[sub 4]:Eu[sup 2+], Dy[sup 3+] Phosphor Crystals journal January 1997
Luminescence Properties of a Red Phosphor, CaAlSiN[sub 3]:Eu[sup 2+], for White Light-Emitting Diodes journal January 2006
Crystal chemistry of silica-rich Barium silicates journal January 1980
Crystal chemistry of silica-rich barium silicates journal January 1980
Crystal chemistry of silica-rich Barium silicates: I: Refinement of the crystal structures of Ba 4 [Si 6 O 16 ], Ba 5 [Si 8 O 21 ] and Ba 6 [Si 10 O 26 ], silicates with triple, quadruple and quintuple chains journal December 1980
Singlet exciton fission in a modified acene with improved stability and high photoluminescence yield. text January 2021
Preparation and Luminescence Properties of Ba5Si8O21 Long Persistent Phosphors Doped with Rare-Earth Elements journal January 2019