论文信息 - Copper oxide and selenide nanoparticles embedded into sol-gel-derived silica glasses doped with europium

Copper oxide and selenide nanoparticles embedded into sol-gel-derived silica glasses doped with europium

The silica sol-gel derived glasses co-doped with CuxO and CuxSe nanoparticles and Eu3+ ions have been fabricated. The analysis of luminescence spectra of a series of glasses with different composition allows us to suppose the direct energy transfer between copper oxide nanoparticle and Eu3+ ion. A luminescence signal of europium ions occurs as the result of excitation of the complex active centres (SiO2:Cu2O:Eu3+) in the absorption range of copper oxide.

[1] Valerij S. Gurin,et al. Nonlinear optical properties of solgel-derived glasses doped with copper selenide nanoparticles , 2000 .

[2] Renata Reisfeld,et al. Fluorescence of europium(III) trapped in silica gel-glass as a probe for cation binding and for changes in cage symmetry during gel dehydration , 1984 .

[3] Valerij S. Gurin,et al. Optical transient bleaching and induced absorption of surface-modified copper sulfide nanocrystals , 1996 .

[4] Valerij S. Gurin,et al. An Incorporation of copper and its oxides and chalcogenides into silica sol-gel materials , 2002 .

[5] Radhaballabh Debnath,et al. Site-dependent luminescence of Cu+ ions in silica glass , 1989 .

[6] Valerij S. Gurin,et al. Formation of ultrafine particles of copper and copper sulfide in silica films and glasses prepared by sol–gel technique , 1998 .

[7] Masayuki Nogami,et al. Room-temperature persistent spectral hole burning of Eu3+ coupling with Al3+ in glass , 2001 .

[8] E. Zych,et al. Concentration dependence of energy transfer between Eu3+ ions occupying two symmetry sites in Lu2O3 , 2002 .