TY - JOUR
T1 - Ultrastable structure and luminescence properties of Y2O 3 nanotubes
AU - Zhu, Hongyang
AU - Ma, Yanzhang
AU - Yang, Haibin
AU - Zhu, Peifen
AU - Du, Jianguo
AU - Ji, Cheng
AU - Hou, Dongbin
PY - 2010/7
Y1 - 2010/7
N2 - Pure and Eu-doped Y2O3 nanotubes (NTs) were synthesized by a hydrothermal method. The crystal structure of synthesized pure and Eu-doped Y2O3 NTs are respectively stable to 22 and 18.3 GPa, which are about 10 GPa higher than bulk Y2O3. Phase transformation routes of Y2O3 NTs are cubic → amorphous directly instead of cubic → monoclinic → hexagonal of bulk Y2O3. Due to the doped Eu3+ ions, the Eu-doped Y2O3 has larger cell parameters, lower phase transformation pressure, and smaller bulk modulus compared to pure Y 2O3 NTs. The much elevated structural stability of the Eu-doped Y2O3 NTs, which is attributed to the size-induced high energy kinetic hindrance, leads to an ultrastable luminescence. Such a novel property of Eu-doped Y2O3 NTs is expected to play a significant role in high-stability nano-photo-devices.
AB - Pure and Eu-doped Y2O3 nanotubes (NTs) were synthesized by a hydrothermal method. The crystal structure of synthesized pure and Eu-doped Y2O3 NTs are respectively stable to 22 and 18.3 GPa, which are about 10 GPa higher than bulk Y2O3. Phase transformation routes of Y2O3 NTs are cubic → amorphous directly instead of cubic → monoclinic → hexagonal of bulk Y2O3. Due to the doped Eu3+ ions, the Eu-doped Y2O3 has larger cell parameters, lower phase transformation pressure, and smaller bulk modulus compared to pure Y 2O3 NTs. The much elevated structural stability of the Eu-doped Y2O3 NTs, which is attributed to the size-induced high energy kinetic hindrance, leads to an ultrastable luminescence. Such a novel property of Eu-doped Y2O3 NTs is expected to play a significant role in high-stability nano-photo-devices.
KW - Luminescence
KW - Nanotubes
KW - Synchrotron X-ray
UR - http://www.scopus.com/inward/record.url?scp=77954213462&partnerID=8YFLogxK
U2 - 10.1016/j.ssc.2010.04.017
DO - 10.1016/j.ssc.2010.04.017
M3 - Article
AN - SCOPUS:77954213462
SN - 0038-1098
VL - 150
SP - 1208
EP - 1212
JO - Solid State Communications
JF - Solid State Communications
IS - 27-28
ER -