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    Tuning of photoluminescence by cation nanosegregation in the (CaMg)x(NaSc)1-xSi2O6 solid solution / Z. Xia [et al.] // J. Am. Chem. Soc. - 2016. - Vol. 138, Is. 4. - P. 1158-1161, DOI 10.1021/jacs.5b12788. - Cited References: 23. - Work performed by Z.X. and Q.L. was supported by the National Natural Science Foundation of China (51272242 and 51572023), the Program for New Century Excellent Talents in the University of the Ministry of Education of China (NCET-12-0950), and the Beijing Nova Program (Z131103000413047). Work performed by G.L., J.W., Z.M., M.B., and D.J.M. at Argonne National Laboratory was supported by the Office of Basic Energy Sciences of the U.S. Department of Energy (DOE) through Grant DE-AC02-06CH11357 for research on heavy elements chemistry and materials sciences. TEM was accomplished in part at the Center for Nanoscale Materials, a DOE Office of Science User Facility under Contract DE-AC02-06CH11357. Sector 20 operations at APS are supported by DOE and the Canadian Light Source, with additional support from the University of Washington. G.L. acknowledges travel support from the CAS/SAFEA International Partnership Program for Creative Research Teams. K.R.P. gratefully acknowledges support from the National Science Foundation (DMR-1307698). . - ISSN 0002-7863
   Перевод заглавия: Управление люминесценцией за счет наносегрегации катионов в твердом растворе (CaMg)x(NaSc)1-xSi2O6

РУБ Chemistry, Multidisciplinary
Рубрики:
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.
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