TY - JOUR
T1 - Tunable photoluminescence and energy transfer of YBO3:Tb3+, Eu3+ forwhite light emitting diodes
AU - Zhang, Xianwen
AU - Zhao, Zhi
AU - Zhang, Xin
AU - Marathe, Archis
AU - Cordes, David B.
AU - Weeks, Brandon
AU - Chaudhuri, Jharna
PY - 2013
Y1 - 2013
N2 - Rare-earth (Eu3+, Tb3+) ion co-doped YBO3 phosphors with a morphology of
uniform flower-like assembly are fabricated by a facile hydrothermal
method without the use of surfactant, organic ligands, or further
sintering treatment. Photoluminescence (PL) studies have demonstrated
that under the excitation of 365 nm ultraviolet (UV) light, YBO3: Tb3+,
Eu3+ emits a white light, including three emissions: a blue band
attributed to self-trapped excitons (STEs), a green band due to the Tb3+
transition of D-5(4)-F-7(j) (j = 6, 5, 4, and 3), and a red band due to
the Eu3+ transition of D-5(0)-F-7(j) (j = 0, 1, 2, 3, and 4). Energy
transfers from host YBO3 to Tb3+, and Eu3+ and Tb3+ to Eu3+, as well as
tunable emission by varying the relative doping ratios are demonstrated.
The combination of blue emission from STEs with green and red emissions
from activators provides a novel and efficient technique to make white
light emitting diodes (WLEDs).
AB - Rare-earth (Eu3+, Tb3+) ion co-doped YBO3 phosphors with a morphology of
uniform flower-like assembly are fabricated by a facile hydrothermal
method without the use of surfactant, organic ligands, or further
sintering treatment. Photoluminescence (PL) studies have demonstrated
that under the excitation of 365 nm ultraviolet (UV) light, YBO3: Tb3+,
Eu3+ emits a white light, including three emissions: a blue band
attributed to self-trapped excitons (STEs), a green band due to the Tb3+
transition of D-5(4)-F-7(j) (j = 6, 5, 4, and 3), and a red band due to
the Eu3+ transition of D-5(0)-F-7(j) (j = 0, 1, 2, 3, and 4). Energy
transfers from host YBO3 to Tb3+, and Eu3+ and Tb3+ to Eu3+, as well as
tunable emission by varying the relative doping ratios are demonstrated.
The combination of blue emission from STEs with green and red emissions
from activators provides a novel and efficient technique to make white
light emitting diodes (WLEDs).
M3 - Article
SP - 7202
EP - 7207
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
SN - 2050-7534
ER -