Vapor Phase Synthesis of Upconverting Y2O3 Nanocrystals Doped with Yb3+, Er3+, Ho3+, and Tm3+ to Generate Red, Green, Blue, and White Light.

Glaspell, Garry; Anderson, John; Wilkins, James R.; El-Shall, M.
Samy. Department of Chemistry, Virginia Commonwealth University,
Richmond, VA, USA. Journal of Physical Chemistry C (2008),
112(30), 11527-11531. Publisher: American Chemical Society, CODEN:
JPCCCK ISSN: 1932-7447. Journal written in English. AN
2008:804676 CAPLUS

Abstract

We report the vapor phase synthesis of upconverting Y2O3 nanocrystals
doped with Yb3+, Er3+, Ho3+, and Tm3+ to generate red, green, blue, and
white light. Incorporating Er3+ within the Yb3+ doped Y2O3 nanocrystals
under 980 nm laser excitation produced orange and yellow upconversion
luminescence tunable by varying the Yb3+ concn. The Yb3+, Er3+, and
Tm3+ codoped Y2O3 nanocrystals exhibited nearly equal intensities of the
red, green, and blue emissions upon 980 nm laser excitation. White
light can be produced by adjusting the concns. of the Ln3+ ions within
the Y2O3 nanocrystals.