Article (Scientific journals)
Effect of the RE (RE = Eu, Er) doping on the structural and textural properties of mesoporous TiO2 thin films obtained by evaporation induced self-assembly method
Borlaf, Mario; Caes, Sébastien; Dewalque, Jennifer et al.
2014In Thin Solid Films, 558, p. 140-148
Peer Reviewed verified by ORBi
 

Files


Full Text
Thin Solid Films, 2014, 558, 140-148.pdf
Publisher postprint (1.83 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Sol–gel deposition; Titania; Erbium; Europium; Evaporation induced self-assembly; Mesoporous films; Thin films
Abstract :
[en] Polymeric sol–gel route has been used for the preparation of TiO2 and RE2O3–TiO2 (RE = Eu, Er) mesoporous thin films by evaporation induced self-assembly method using Si (100) as a substrate. The influence of the relative humidity (RH) on the preparation of the film has been studied being necessary to work under 40% RH in order to obtain homogeneous and transparent thin films. The films were annealed at different temperatures until 900 °C/1 h and the anatase crystallization and its crystal size evolution were followed by low angle X-ray diffraction. Neither the anatase–rutile transition nor the formation of other compounds was observed in the studied temperature range. Ellipsoporosimetry studies demonstrated that the thickness of the thin films did not change after calcination at 500 °C, the porosity was constant until 700 °C, the pore size increased and the specific surface area decreased with temperature. Moreover, the effect of the doping with Er3 + and Eu3 + was studied and a clear inhibition of the crystal growth and the sintering process was detected (by transmission electron and atomic force microscopy) when the doped films are compared with the undoped ones. Finally, Eu3 + and Er3 + f–f transitions were detected by PL measurements.
Disciplines :
Chemistry
Author, co-author :
Borlaf, Mario
Caes, Sébastien ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Dewalque, Jennifer  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Colomer, Maria Teresa
Moreno, Rodrigo
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Boschini, Frédéric ;  Université de Liège - ULiège > Plateforme APTIS
Language :
English
Title :
Effect of the RE (RE = Eu, Er) doping on the structural and textural properties of mesoporous TiO2 thin films obtained by evaporation induced self-assembly method
Publication date :
02 May 2014
Journal title :
Thin Solid Films
ISSN :
0040-6090
Publisher :
Elsevier Science
Volume :
558
Pages :
140-148
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 May 2014

Statistics


Number of views
86 (17 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
15
Scopus citations®
without self-citations
14
OpenCitations
 
16

Bibliography


Similar publications



Contact ORBi