Premium
Effect of CaCN 2 on the preparation of CaAlSiN 3 :Eu 2+ phosphors
Author(s) -
Xiao LinJiu,
Lv Yan,
Xie Ying,
Su Jian,
Jiang XinDong,
He Mingrui
Publication year - 2018
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3434
Subject(s) - phosphor , crystallization , calcination , photoluminescence , luminescence , analytical chemistry (journal) , materials science , excited state , emission intensity , mineralogy , chemistry , optoelectronics , catalysis , physics , chromatography , atomic physics , biochemistry , organic chemistry
Highly efficient red‐emitting phosphors, CaAlSiN 3 :Eu 2+ , were successfully prepared by the solid‐state method using calcium cyanide (CaCN 2 ) as the single calcium source. The influences of crystallization temperature, crystallization time, calcination mode and compounds ratio on the photoluminescent properties were investigated. The CaAlSiN 3 :Eu 2+ phosphors were obtained with 1 mol% CaCN 2 by a two‐step calcination procedure at 900°C for 2 h and subsequently at 1600°C for 8 h. The CaAlSiN 3 :Eu 2+ phosphors showed the strongest luminescent intensity at 660 nm when excited by 468 nm. With an increase in crystallization time, the maximum wavelength of the emission was shifted from 644 nm to 660 nm.