Premium
Control of photoluminescence in Ca 3–3 x /7 Y 2 x /7 (PO 4 ) 2 :Eu 2+ phosphors by migration of the dopant
Author(s) -
Han Jin,
Zhou Wenli,
Tang Miao,
Lian Shixun
Publication year - 2015
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201510220
Subject(s) - photoluminescence , phosphor , dopant , crystallography , ion , luminescence , solid state , spectral line , cationic polymerization , solid solution , chemistry , mineralogy , materials science , analytical chemistry (journal) , doping , physics , optoelectronics , metallurgy , organic chemistry , chromatography , astronomy
A series of Ca 3–3 x /7 Y 2 x /7 (PO 4 ) 2 :Eu 2+ phosphors were synthesized by conventional solid‐state reaction. The photoluminescence spectra elucidate that the evolution of emission hue from violet–blue to blue–greenish could be realized by incorporating Y 3+ ions. The aliovalent substitution of Y 3+ for Ca 2+ forms cationic vacancies (h denotes a vacancy) at Ca(4) site according to the formula 3Ca 2+ = 2Y 3+ + h, and then facilitates the migration of dopant Eu 2+ from Ca(4) site to other sites in host lattice. (© 2015 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)