Dual energy converting nano-phosphors: upconversion luminescence and X-ray excited scintillation from a single composition of lanthanide-doped yttrium oxide.

Journal Article (Journal Article)

We report an upconverting nanomaterial composition, [Y(2)O(3); Yb (2%), Er (1%)], that converts both X-ray and high-fluence NIR irradiation to visible light. This composition is compared to a higher Yb(3+) doped composition, [Y(2)O(3); Yb (10%), Er (1%)], that displays diminished visible X-ray scintillation, but shows enhanced red wavelength centered upconversion emission. These nanocrystals have been characterized by TEM, X-ray diffraction, power-dependent upconversion luminescence, and X-ray scintillation spectroscopy. We further demonstrate that lithium ion doping of the [Y(2)O(3); Yb (2%), Er (1%)] nanoscale composition leads to enhanced X-ray and NIR excited emission intensities through the production of nanoparticles that feature slightly enhanced sizes and increased crystallinity.

Full Text

Duke Authors

Cited Authors

  • Stanton, IN; Ayres, JA; Therien, MJ

Published Date

  • October 2012

Published In

Volume / Issue

  • 41 / 38

Start / End Page

  • 11576 - 11578

PubMed ID

  • 22940914

Electronic International Standard Serial Number (EISSN)

  • 1477-9234

International Standard Serial Number (ISSN)

  • 1477-9226

Digital Object Identifier (DOI)

  • 10.1039/c2dt31616a


  • eng