A Novel Green-Emitting Phosphor BaZnP/sub 2/O/sub 7/:Tb/sup 3+/ for White Leds and the Infuence of Doping Ce/sup 3+/

The BaZnP
₂
O
₇
:Tb
³⁺
phosphor was synthesized by high temperature solid state reaction and an efficient green emission under near-ultraviolet was observed. The X-ray diffraction pattern indicates that pure BaZnP
₂
O
₇
:Tb
³⁺
phosphor was obtained. The emission spectrum shows the most intense peak is located at 547 nm, which corresponds to the
⁵
D
₄
rarr
⁷
F
₅
transition of Tb
³⁺
. The excitation spectrum is extending from 300 to 400 nm, which is coupled well with the emission of UV LED (370-420 nm). The BaZnP
₂
O
₇
:Tb
³⁺
is a potential green-emitting phosphor for white LEDs. The BaZnP
₂
O
₇
doped with Ce
³⁺
or double doped with Tb
³⁺
and Ce
³⁺
were also prepared and the effect of co-doped Ce on the emission intensity of BaZnP
₂
O
₇
:Tb
³⁺
phosphor was investigated.