Ultrastable Structure and Luminescence Properties of Y2O3 Nanotubes
Pure and Eu-doped Y{sub 2}O{sub 3} nanotubes (NTs) were synthesized by a hydrothermal method. The crystal structure of synthesized pure and Eu-doped Y{sub 2}O{sub 3} NTs are respectively stable to 22 and 18.3 GPa, which are about 10 GPa higher than bulk Y{sub 2}O{sub 3}. Phase transformation routes of Y{sub 2}O{sub 3}NTs are cubic {yields} amorphous directly instead of cubic {yields} monoclinic {yields} hexagonal of bulk Y{sub 2}O{sub 3}. Due to the doped Eu{sup 3+} ions, the Eu-doped Y{sub 2}O{sub 3} has larger cell parameters, lower phase transformation pressure, and smaller bulk modulus compared to pure Y{sub 2}O{sub 3} NTs. The much elevated structural stability of the Eu-doped Y{sub 2}O{sub 3} NTs, which is attributed to the size-induced high energy kinetic hindrance, leads to an ultrastable luminescence. Such a novel property of Eu-doped Y{sub 2}O{sub 3} NTs is expected to play a significant role in high-stability nano-photo-devices.
- Research Organization:
- Brookhaven National Laboratory (BNL) National Synchrotron Light Source
- Sponsoring Organization:
- DOE - OFFICE OF SCIENCE
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1019969
- Report Number(s):
- BNL--95840-2011-JA
- Journal Information:
- Solid State Communications, Journal Name: Solid State Communications Journal Issue: 27-28 Vol. 150; ISSN 0038-1098; ISSN SSCOA4
- Country of Publication:
- United States
- Language:
- English
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