BING YAN^1,* , YONGXU WANG¹, XIUZHEN XIAO¹

Abstract

Rare earth coordination polymers with ortho hydroxylbenzoic acid (OHBA) were used as the precursors of luminescent species, composed with polyethylene glycol (PEG) to achieve hybrid dispersing media and other functional components to modify the composition and pH value. The resulting multicomponent hybrid precursors were assembled by a sol-gel process of tert-n-butyl titanate (Ti(OC4H9)4) and further thermally decomposed to obtain a series of rare earth oxysalts ceramic phosphors: SrxCa1-xTiO3: Pr3+, Al3+ ceramic phosphors. Both XRD and SEM indicated the particle sizes were in the submicrometer range of 100 ∼ 300 nm. Photoluminescence for SrxCa1-xTiO3: Pr3+, Al3+ was compared with the different component of host (molecular ratio of Sr, Ca). These phosphors presented a broad excitation band in the visible blue-violet region with the maximum excitation peak at 445 nm and a wide emission band with a maximum peak at 619 nm. Furthermore, the introduction of Al3+ can sensitize the luminescence of Pr3+..

Keywords

Phosphors, Sol-gel synthesis, Photoluminescence, Hybrid precursors.

Submitted at: Dec. 7, 2007
Accepted at: Dec. 10, 2008

Citation

BING YAN, YONGXU WANG, XIUZHEN XIAO, Luminescence of submicrometer SrxCa1-xTiO3: Pr3+, Al3+ ceramic phosphors by sol-gel composition of hybrid precursors, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3270-3273 (2008)

• Download Fulltext
• Downloads: 3 (from 3 distinct Internet Addresses ).

• Scientometry
• Fast publication
• Old Site

• journals@inoe.ro
• (+40) 021-457 57 58
• (+40) 021-457 45 22
• 409 Atomistilor Str.
  077125 Magurele,
  Ilfov, Romania