phosphor samples were synthesized by a solid-state reaction method. The lattice parameter of the
phosphor samples was linearly decreased from 12.654 to
, and the main emission wavelength was shifted from 501 to
with increase of the
ion concentration
from 0.05 to 0.50. The relative photoluminescence (PL) intensity under
excitation was increased with increase of the
from 0.05 to 0.25 due to the excitation band extended to the longer wavelength. However, when
, the PL intensity was decreased due to nonradiative transitions among the
ions and the formation of
impurity phase. The Commission International de l’Eclairge chromaticity coordinates were also largely shifted from the bluish-green emitting region (
,
) to the green emitting one (
= 2.414,
= 0.658) by increasing the
from 0.05 to 0.50. The energy transfer from the
ion to the
ion enhanced the PL intensity of the
ion emission under near ultraviolet and blue excitation. The PL intensity of the
phosphor sample was higher by 24% than that of the
phosphor sample under
excitation.
Effects of Eu2+ concentration variation and Ce3+ codoping on photoluminescence properties of BaGa2S4:Eu2+ phosphor
- Journal
- J. Electrochem. Soc.
- Status
- published
- Vol
- 155
- Page
- J66-J70
- Year
- 2010
- Link
- http://doi.org/10.1149/1.2825303 765회 연결