TY - JOUR
T1 - Photoluminescence characteristics of macroporous eu-doped yttrium oxide particles prepared by spray pyrolysis
AU - Widiyastuti, W.
AU - Minami, Takaaki
AU - Wang, Wei Ning
AU - Iskandar, Ferry
AU - Okuyama, Kikuo
PY - 2009/3
Y1 - 2009/3
N2 - The photoluminescence (PL) characteristics of ordered macroporous europium-doped yttrium oxide (Y2O3W:Eu3+) particles were investigated. The submicrometer particles were prepared by spray pyrolysis using a mixture of a yttrium and europium nitrate solution and colloidal polystyrene latex (PSL) particles as the precursor. The porous particles exhibited higher PL intensity, quantum efficiency, and red-emission properties than the non-porous particles due to their porous structures. Detailed PL analysis revealed that the porous particles have unique photophysical properties, such as a 4-nm blue-shift in the charge transfer band (CTB) wavelength, and a lower symmetry ratio of 2.7, which were not found in non-porous particles with approximately the same particle and crystallite sizes.
AB - The photoluminescence (PL) characteristics of ordered macroporous europium-doped yttrium oxide (Y2O3W:Eu3+) particles were investigated. The submicrometer particles were prepared by spray pyrolysis using a mixture of a yttrium and europium nitrate solution and colloidal polystyrene latex (PSL) particles as the precursor. The porous particles exhibited higher PL intensity, quantum efficiency, and red-emission properties than the non-porous particles due to their porous structures. Detailed PL analysis revealed that the porous particles have unique photophysical properties, such as a 4-nm blue-shift in the charge transfer band (CTB) wavelength, and a lower symmetry ratio of 2.7, which were not found in non-porous particles with approximately the same particle and crystallite sizes.
UR - http://www.scopus.com/inward/record.url?scp=67650841604&partnerID=8YFLogxK
U2 - 10.1143/JJAP.48.032001
DO - 10.1143/JJAP.48.032001
M3 - Article
AN - SCOPUS:67650841604
SN - 0021-4922
VL - 48
SP - 32001
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 3
ER -