Wydział Chemii

Łukasz Marciniak

Dariusz Hreniak

Anna Dobrowolska

Eugeniusz Zych

2010

Applied Physics A-Materials Science and Processing

99

871-877

10.1007/s00339-010-5622-3

Naukowa

Angielski

Artykuł

Powders and thin films of nanocrystalline yttrium disilicate (Y2Si2O7) doped with Ce3+ have been prepared by a sol–gel method. Structure and morphology of the synthesised samples have been determined and spectroscopic properties compared. The triclinic α-Y2Si2O7 form (space group P 1-) for the powders annealed between 1000°C and 1200°C has been found. Atotal conversion into a thortveitite-type monoclinic β-Y2Si2O7 polymorph after annealing of powder samples at 1400°C (space group C2/m) has been observed. In the case of films even at 1300°C the basically pure triclinic α-Y2Si2O7 phase was observed with luminescent spectroscopy. The influence of grain size, controlled by thermal treatment, on the structure and luminescence properties of the fabricated materials are presented and discussed.

http://dx.doi.org/10.1007/s00339-010-5622-3

http://link.springer.com