Eu3+ And Er3+ doped SiO2 - TiO2 sol-gel films for active planar waveguides

• Autorzy: Minh L. Q. , Huong N. T. , Barthou C. , Benalloul P. , Strek P. , Anh T. K.
• Konferencja: International Conference on Sol-Gel materials SGM 2001, Rokosowo, Poland
• Języki publikacji: EN

Abstrakty

EN

Sol-gel films of SiO2 - TiO2 doped with Eu3+ or Er3+ ions were prepared by spin-coating with a variety of molar concentration ratios of tetraethoxysilane (TEOS) and titanium isopropoxide (TPOT). The ratios of SiO2 - TiO2 are 90/10, 85/15, 80/20, 75/25 and the concentrations of Eu and Er ions varied from 10-3 to 5.10-2 mol %. Silica-titania films annealed from 150 up to 900°C decreased their thickness from 300 to 150 nm and increased the refractive index from 1.49 to 1.62. The multilayer (6-8 layers) silica-titania thin films with thickness about 1.2 - 1.6 mm have been developed in order to make highly doped Eu3+ or Er3+ planar wave guides on silicon substrates. Luminescence spectra, lifetimes as well as FTIR and micro-Raman spectra have been measured. The influence of active ion concentrations and annealing temperature on the luminescence properties and the structure of thin films were investigated.

Słowa kluczowe

EN

sol-gel method; Eu(III); Er; thin films

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Materials Science
• Rocznik: 2002
• Tom: Vol. 20, No. 2
• Strony: 47--52
• Opis fizyczny: Bibliogr. 6 poz.,

Twórcy

autor

Minh L. Q.

autor

Huong N. T.

autor

Barthou C.

autor

Benalloul P.

autor

Strek P.

autor

Anh T. K.

• Institute of Materials Science, NCST of Vietnam, Hanoi, Vietnam