Перевод заглавия: Управление люминесценцией за счет наносегрегации катионов в твердом растворе (CaMg)x(NaSc)1-xSi2O6
Рубрики:
SPINODAL DECOMPOSITION
ENERGY-TRANSFER
EXSOLUTION
CLINOPYROXEN
NANOCRYSTALS
SEGREGATION
MECHANISMS
PYROXENESS
JERVISITE
PHOSPHORS
SPINODAL DECOMPOSITION
ENERGY-TRANSFER
EXSOLUTION
CLINOPYROXEN
NANOCRYSTALS
SEGREGATION
MECHANISMS
PYROXENESS
JERVISITE
PHOSPHORS
Аннотация: Controlled photoluminescence tuning is important for the optimization and modification of phosphor materials. Herein we report an isostructural solid solution of (CaMg)x(NaSc)1-xSi2O6 (0 < x < 1) in which cation nanosegregation leads to the presence of two dilute Eu2+ centers. The distinct nanodomains of isostructural (CaMg)Si2O6 and (NaSc)Si2O6 contain a proportional number of Eu2+ ions with unique, independent spectroscopic signatures. Density functional theory calculations provided a theoretical understanding of the nanosegregation and indicated that the homogeneous solid solution is energetically unstable. It is shown that nanosegregation allows predictive control of color rendering and therefore provides a new method of phosphor development. © 2016 American Chemical Society.
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Держатели документа:
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Chemical Sciences and Engineering Division, Argonne, IL, United States
Center for Nanoscale Materials, Nanoscience and Technology Division, Argonne, IL, United States
Nuclear Engineering Division, Argonne, IL, United States
X-ray Science Division, Argonne National Laboratory, Argonne, IL, United States
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, United States
Доп.точки доступа:
Xia, Z.; Liu, G.; Wen, J.; Mei, Z.; Balasubramanian, M.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Peng, L.; Gu, L.; Miller, D. J.; Liu, Q.; Poeppelmeier, K. R.